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• Grub install fails while installing Ubuntu on RAID

  - by Warren Pena

  I'm trying to install Ubuntu 9.10 using the alternate install CD, but I keep getting stuck. I get through the first few steps of the install process easily enough (telling it what partition to install to, what user ID and password to create, time zone, etc.), but then it suddenly pops up a menu asking me what the next step in the install process is. It has "Install the GRUB boot loader on a hard disk" selected by default. When I select it, it goes to another screen with a progress bar and a label "Installing the 'grub2' package." The progress bar gets to 16%, and then I get returned to the same menu. No matter how many times I try to install grub, the exact same thing happens. I'm trying to install Ubuntu on a two disk RAID-1 array. This is the RAID card I'm using: http://www.siig.com/ViewProduct.aspx?pn=SC-SAER12-S2. Any ideas what may be causing this to happen and how I can fix it? Thanks!

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• Exposing the ipPhone attribute to Communicator and the OCS address book service

  - by Doug Luxem

  I am in the process of integrating OCS with our Cisco phone system using CUCIMOC. After some fiddling with the phone normalization rules, it appears that I can get PSTN numbers to be dialed though the CUCIMOC interface (yay!). However, during this process I came to realize that the ipPhone attribute in Active Directory does not appear to be exposed to Communicator (and CUCIMOC). What is strange though, is that I can see from the OCS address book service "Invalid_AD_Phone_Numbers.txt" that the attribute is processed by the address book service. My question is, how do I expose the ipPhone field in Office Communicator? Currently, Communicator maps like this - Work = telephoneNumber Mobile = mobile Home = homePhone Attributes such as otherHomePhone, ipPhone, otherMobile, otherTelephone, otherIpPhone are ignored.

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• Ranking hit after site migration

  - by Ben

  I migrated my site from its old domain over a month ago. I followed Google Webmaster Tools completely, including 301 redirects from every existing URL to the new domain, and then submitting a change of address. Traffic continued as normal, but then a few days after submitting the change of address traffic plummeted to about 20-30% of what it was previously. Most of my traffic comes from organic search, and I can see that for the keywords I had targeted before and performed well with and am now ranking much much lower for. In some cases for low competition keywords I've only lost a few places, for higher competition terms I have really suffered. This has started to pick up a bit (one of my keywords I have risen from 195 to 100 in the last week), but it seems to be a very slow process. How seamless is this process normally? I was under the impression that this would not affect my rankings too severely, but it has now been a month since the move and recovery seems to be very slow, if at all. Is it likely that I've missed something? The only change is that I have moved what was the home page to be more of a sub-page, and now in its place is a magazine-style home page. I understand that links to the old site will now be pointing to the latter which means that rankings for some keywords attributed to the old home page will take a hit, but even on other pages that seem to fit in exactly the same page structure as the previous site I have seen a drop in rankings.

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• How to correctly add daemon in MacOS 10.6.6 via launchd?

  - by Eye of Hell

  Hello. I have a very simple task to accomplish: to start tomcat application server on latest MacOS as a daemon. I have performed following steps: Installed Tomcat in /Library/Tomcat/Home Validated that it runs fine by executed /Library/Tomcat/Home/bin/startup.sh Added org.apache.tomcat.plist file to /Library/LaunchDaemons as found on internet (http://blog.i18n.ro/complete-guide-for-installing-hudson-ci-on-os-x-10-6/) Instructed MacOS to load a daemon description via sudo launchctl load org.apache.tomcat.plist. It succeeded (issuing this command second time outputs "already loaded"). Instructed MacOS to start a daeon via sudo launchctl start org.apache.tomcat.plist At this point MacOS shows an error "launchctl start error: No such process". I have checked the logfile for launchd - it have no record for this error. Google says nothing. And from error text i can't figure out what is the "process" and why it is "wrong" :(. Any hints what i'm doing wrong?

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• Setting Timeouts: SQL Server 2008/IIS 7.5

  - by Julie

  We have recently migrated from a Win 2003/SQL Server 2000 system to Win 2008 64 bit R2, SQL Server 2008 R2. Our websites are in classic asp, and this can't be changed to another scripting language at this time. On the old server, if I got stuck in some kind of endless loop, the page would throw an error. On the new server, I have a page that has some sort of looping problem, that even though the SQL SP is called only once (and runs fine run as a query on the server) it pegs SQL server and therefore locks all of our websites. I'll get my code figured out, no biggie. But I need to make sure the server times out when this happens. (The page I'm working on runs fine with certain instances of the query, and locks with others using a different query variable. I can't have something like that sneak up on me on a page I haven't touched for three years.) I can't figure out how an SP that runs once on the server, from an ASP page, is tying up SQL server this way. It's obviously some sort of a timeout issue, but I can't figure out where/which timeout values to change. I actually have to remote desktop to the server and kill the process in SQL server. I'm afraid I'm a generalist, and server management is not my thing, even though it's my responsibility, so I am almost certain to have questions about any answer that I receive. How can I track this down? What settings do I need to change? More info: It's not SQL Server On our test site, I created an ASP file that just did an endless loop (do while 1=1) and had the same problem - the other websites wouldn't load - without SQL server being involved. So I think the reason the process was hanging is that the page wasn't timing out as it should, and so the connection to SQL was never closed. Killing the process in SQL server would reset the page somehow. For my intentional endless loop, I had to refresh the app pool to get rid of it. This points more to either IIS or the ASP settings. The ASP timeouts are set to whatever the default were when the server was first loaded. I still can't figure out why one file is locking up all websites, though. Again, that didn't happen on the old server.

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• Transfer used ram to swap and free more physical ram

  - by AbuOmar

  I have a vps with 256m physical ram and 512m swap space, I am trying to use a software that need more than 256m and less than 512m ram, so it uses swap. The problem is at some moment of the installation, the installation process checks the available physical ram, it's full (some swap is used), so it pauses the installation and tills that it must be some more ram to continue the installation.. I see that I need to move some of used physical ram to swap while the process is running.. Is there anyway I can do that? or any other solution! For sorry I am using openvz vps, and the vm.swappiness option can't be modified as a solution.

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• How to remove the hint in the terminal?

  - by jiangchengwu

  As a normal user , when I run some command like ps\netstat, the terminal hint me: (Not all processes could be identified, non-owned process info will not be shown, you would have to be root to see it all.) I know could redirect STDERR to /dev/null can remove this hint. But I want to know is there any way to remove it , such as edit some configuration files ? [deploy@storage2 ~]$ ps -V (Not all processes could be identified, non-owned process info will not be shown, you would have to be root to see it all.) procps version 3.2.7 [deploy@storage2 ~]$ ps -V 2>/dev/null procps version 3.2.7 My OS info: [deploy@storage2 ~]$ uname -a Linux storage2 2.6.18-243.el5 #1 SMP Mon Feb 7 18:47:27 EST 2011 x86_64 x86_64 x86_64 GNU/Linux [deploy@storage2 ~]$ lsb_release LSB Version: :core-3.1-amd64:core-3.1-ia32:core-3.1-noarch:graphics-3.1-amd64:graphics-3.1-ia32:graphics-3.1-noarch [deploy@storage2 ~]$ netstat -V (Not all processes could be identified, non-owned process info will not be shown, you would have to be root to see it all.) net-tools 1.60 netstat 1.42 (2001-04-15) Fred Baumgarten, Alan Cox, Bernd Eckenfels, Phil Blundell, Tuan Hoang and others +NEW_ADDRT +RTF_IRTT +RTF_REJECT +FW_MASQUERADE +I18N AF: (inet) +UNIX +INET +INET6 +IPX +AX25 +NETROM +X25 +ATALK +ECONET +ROSE HW: +ETHER +ARC +SLIP +PPP +TUNNEL +TR +AX25 +NETROM +X25 +FR +ROSE +ASH +SIT +FDDI +HIPPI +HDLC/LAPB There are more info from strace: [deploy@storage2 ~]$ strace ps -V execve("/bin/ps", ["ps", "-V"], [/* 27 vars */]) = 0 brk(0) = 0x929a000 access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory) open("/etc/ld.so.cache", O_RDONLY) = 3 fstat64(3, {st_mode=S_IFREG|0644, st_size=99752, ...}) = 0 mmap2(NULL, 99752, PROT_READ, MAP_PRIVATE, 3, 0) = 0xfffffffff7fde000 close(3) = 0 open("/lib/libnsl.so.1", O_RDONLY) = 3 read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0 \241\210\0004\0\0\0"..., 512) = 512 fstat64(3, {st_mode=S_IFREG|0755, st_size=101404, ...}) = 0 mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xfffffffff7fdd000 mmap2(0x887000, 92104, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x887000 mmap2(0x89a000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x12) = 0x89a000 mmap2(0x89c000, 6088, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x89c000 close(3) = 0 open("/lib/libdl.so.2", O_RDONLY) = 3 read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0Pzt\0004\0\0\0"..., 512) = 512 fstat64(3, {st_mode=S_IFREG|0755, st_size=16428, ...}) = 0 mmap2(0x747000, 12408, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x747000 mmap2(0x749000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1) = 0x749000 close(3) = 0 open("/lib/libm.so.6", O_RDONLY) = 3 read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\20\204p\0004\0\0\0"..., 512) = 512 fstat64(3, {st_mode=S_IFREG|0755, st_size=208352, ...}) = 0 mmap2(0x705000, 155760, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x705000 mmap2(0x72a000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x24) = 0x72a000 close(3) = 0 open("/lib/libcrypt.so.1", O_RDONLY) = 3 read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\340\246q\0004\0\0\0"..., 512) = 512 fstat64(3, {st_mode=S_IFREG|0755, st_size=45288, ...}) = 0 mmap2(0x71a000, 201020, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xfffffffff7fab000 mmap2(0xf7fb4000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x8) = 0xfffffffff7fb4000 mmap2(0xf7fb6000, 155964, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xfffffffff7fb6000 close(3) = 0 open("/lib/libutil.so.1", O_RDONLY) = 3 read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0 \n\0\0004\0\0\0"..., 512) = 512 fstat64(3, {st_mode=S_IFREG|0755, st_size=13420, ...}) = 0 mmap2(NULL, 12428, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xfffffffff7fa7000 mmap2(0xf7fa9000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1) = 0xfffffffff7fa9000 close(3) = 0 open("/lib/libpthread.so.0", O_RDONLY) = 3 read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0@(s\0004\0\0\0"..., 512) = 512 fstat64(3, {st_mode=S_IFREG|0755, st_size=129716, ...}) = 0 mmap2(0x72e000, 90596, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x72e000 mmap2(0x741000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x13) = 0x741000 mmap2(0x743000, 4580, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x743000 close(3) = 0 open("/lib/libc.so.6", O_RDONLY) = 3 read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\340?]\0004\0\0\0"..., 512) = 512 fstat64(3, {st_mode=S_IFREG|0755, st_size=1611564, ...}) = 0 mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xfffffffff7fa6000 mmap2(0x5be000, 1328580, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x5be000 mmap2(0x6fd000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x13f) = 0x6fd000 mmap2(0x700000, 9668, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x700000 close(3) = 0 mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xfffffffff7fa5000 set_thread_area(0xffd61bb4) = 0 mprotect(0x6fd000, 8192, PROT_READ) = 0 mprotect(0x741000, 4096, PROT_READ) = 0 mprotect(0xf7fa9000, 4096, PROT_READ) = 0 mprotect(0xf7fb4000, 4096, PROT_READ) = 0 mprotect(0x72a000, 4096, PROT_READ) = 0 mprotect(0x749000, 4096, PROT_READ) = 0 mprotect(0x89a000, 4096, PROT_READ) = 0 mprotect(0x5ba000, 4096, PROT_READ) = 0 munmap(0xf7fde000, 99752) = 0 set_tid_address(0xf7fa5708) = 20214 set_robust_list(0xf7fa5710, 0xc) = 0 futex(0xffd61f74, FUTEX_WAKE_PRIVATE, 1) = 0 rt_sigaction(SIGRTMIN, {0x4007323d0, [], 0}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {0x10000004007322e0, [], 0}, NULL, 8) = 0 rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 getrlimit(RLIMIT_STACK, {rlim_cur=-4284481536, rlim_max=67108864*1024}) = 0 uname({sys="Linux", node="storage2", ...}) = 0 readlink("/proc/self/exe", "/bin/ps"..., 260) = 7 brk(0) = 0x929a000 brk(0x92bb000) = 0x92bb000 open("/bin/ps", O_RDONLY|O_LARGEFILE) = 3 _llseek(3, -12, [711660], SEEK_END) = 0 read(3, "\274U!\253\2\0\0\0\224\237\t\0", 12) = 12 mmap2(NULL, 634880, PROT_READ, MAP_SHARED, 3, 0x13) = 0xfffffffff7f0a000 mmap2(NULL, 630784, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xfffffffff7e70000 close(3) = 0 futex(0x74a06c, FUTEX_WAKE_PRIVATE, 2147483647) = 0 geteuid32() = 501 socket(PF_FILE, SOCK_STREAM, 0) = 3 fcntl64(3, F_SETFL, O_RDWR|O_NONBLOCK) = 0 connect(3, {sa_family=AF_FILE, path="/var/run/nscd/socket"...}, 110) = -1 ENOENT (No such file or directory) close(3) = 0 socket(PF_FILE, SOCK_STREAM, 0) = 3 fcntl64(3, F_SETFL, O_RDWR|O_NONBLOCK) = 0 connect(3, {sa_family=AF_FILE, path="/var/run/nscd/socket"...}, 110) = -1 ENOENT (No such file or directory) close(3) = 0 open("/etc/nsswitch.conf", O_RDONLY) = 3 fstat64(3, {st_mode=S_IFREG|0644, st_size=1696, ...}) = 0 mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xfffffffff7ff6000 read(3, "#\n# /etc/nsswitch.conf\n#\n# An ex"..., 4096) = 1696 read(3, "", 4096) = 0 close(3) = 0 munmap(0xf7ff6000, 4096) = 0 open("/etc/ld.so.cache", O_RDONLY) = 3 fstat64(3, {st_mode=S_IFREG|0644, st_size=99752, ...}) = 0 mmap2(NULL, 99752, PROT_READ, MAP_PRIVATE, 3, 0) = 0xfffffffff7fde000 close(3) = 0 open("/lib/libnss_files.so.2", O_RDONLY) = 3 read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\300\30\0\0004\0\0\0"..., 512) = 512 fstat64(3, {st_mode=S_IFREG|0755, st_size=46680, ...}) = 0 mmap2(NULL, 41616, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xfffffffff7e65000 mmap2(0xf7e6e000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x8) = 0xfffffffff7e6e000 close(3) = 0 mprotect(0xf7e6e000, 4096, PROT_READ) = 0 munmap(0xf7fde000, 99752) = 0 open("/etc/passwd", O_RDONLY) = 3 fcntl64(3, F_GETFD) = 0 fcntl64(3, F_SETFD, FD_CLOEXEC) = 0 fstat64(3, {st_mode=S_IFREG|0644, st_size=2166, ...}) = 0 mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xfffffffff7ff6000 read(3, "root:x:0:0:root:/root:/bin/bash\n"..., 4096) = 2166 close(3) = 0 munmap(0xf7ff6000, 4096) = 0 mkdir("/tmp/pdk-deploy/", 0755) = -1 EEXIST (File exists) mkdir("/tmp/pdk-deploy/fcb734befe617ec3ae1edc38da810a5a", 0755) = -1 EEXIST (File exists) open("/tmp/pdk-deploy/fcb734befe617ec3ae1edc38da810a5a/libperl.so", O_RDONLY|O_LARGEFILE) = 3 close(3) = 0 open("/tmp/pdk-deploy/fcb734befe617ec3ae1edc38da810a5a/libperl.so", O_RDONLY) = 3 read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\300!\2\0004\0\0\0"..., 512) = 512 fstat64(3, {st_mode=S_IFREG|0664, st_size=1264090, ...}) = 0 mmap2(NULL, 1140104, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xfffffffff7d4e000 mmap2(0xf7e5a000, 45056, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x10b) = 0xfffffffff7e5a000 close(3) = 0 rt_sigaction(SIGFPE, {0x1000000000000001, [], SA_RESTORER|SA_STACK|SA_RESTART|SA_INTERRUPT|SA_NODEFER|SA_RESETHAND|SA_SIGINFO|0x3d61cb8, (nil)}, {SIG_DFL, ~[HUP INT ILL ABRT BUS SEGV USR2 PIPE ALRM TERM STOP TSTP TTIN TTOU XCPU WINCH IO PWR SYS RTMIN RT_1 RT_2 RT_4 RT_5 RT_8 RT_9 RT_11 RT_12 RT_13 RT_16 RT_17 RT_18 RT_22 RT_24 RT_25 RT_26 RT_27 RT_28 RT_29 RT_30 RT_31], SA_RESTART|SA_RESETHAND|0x22302d0}, 8) = 0 getuid32() = 501 geteuid32() = 501 getgid32() = 502 getegid32() = 502 open("/usr/lib/locale/locale-archive", O_RDONLY|O_LARGEFILE) = 3 fstat64(3, {st_mode=S_IFREG|0644, st_size=56454896, ...}) = 0 mmap2(NULL, 2097152, PROT_READ, MAP_PRIVATE, 3, 0) = 0xfffffffff7b4e000 mmap2(NULL, 241664, PROT_READ, MAP_PRIVATE, 3, 0x13ec) = 0xfffffffff7b13000 mmap2(NULL, 4096, PROT_READ, MAP_PRIVATE, 3, 0x1466) = 0xfffffffff7b12000 close(3) = 0 mmap2(NULL, 135168, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xfffffffff7af1000 time(NULL) = 1348210009 readlink("/proc/self/exe", "/bin/ps"..., 4095) = 7 ioctl(0, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost isig icanon echo ...}) = 0 _llseek(0, 0, 0xffd618d0, SEEK_CUR) = -1 ESPIPE (Illegal seek) ioctl(1, SNDCTL_TMR_TIMEBASE or TCGETS, 0xffd618a8) = -1 EINVAL (Invalid argument) _llseek(1, 0, 0xffd618d0, SEEK_CUR) = -1 ESPIPE (Illegal seek) ioctl(2, SNDCTL_TMR_TIMEBASE or TCGETS, 0xffd618a8) = -1 EINVAL (Invalid argument) _llseek(2, 0, 0xffd618d0, SEEK_CUR) = -1 ESPIPE (Illegal seek) open("/dev/null", O_RDONLY|O_LARGEFILE) = 3 ioctl(3, SNDCTL_TMR_TIMEBASE or TCGETS, 0xffd61978) = -1 ENOTTY (Inappropriate ioctl for device) _llseek(3, 0, [0], SEEK_CUR) = 0 fcntl64(3, F_SETFD, FD_CLOEXEC) = 0 rt_sigaction(SIGCHLD, NULL, {SIG_DFL, [], SA_RESTART|SA_RESETHAND|0x22302d0}, 8) = 0 brk(0x92dc000) = 0x92dc000 getppid() = 20212 stat64("/opt/ActivePerl-5.8/site/lib/sitecustomize.pl", 0xffd61560) = -1 ENOENT (No such file or directory) close(3) = 0 open("/usr/lib/.khostd/.hostconf", O_RDONLY|O_LARGEFILE) = 3 ioctl(3, SNDCTL_TMR_TIMEBASE or TCGETS, 0xffd61828) = -1 ENOTTY (Inappropriate ioctl for device) _llseek(3, 0, [0], SEEK_CUR) = 0 fstat64(3, {st_mode=S_IFREG|0644, st_size=334, ...}) = 0 fcntl64(3, F_SETFD, FD_CLOEXEC) = 0 read(3, "bindport=9001\ntrustip=221.122.57"..., 4096) = 334 read(3, "", 4096) = 0 close(3) = 0 pipe([3, 4]) = 0 pipe([5, 6]) = 0 clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0) = 20215 close(6) = 0 close(4) = 0 read(5, "", 4) = 0 close(5) = 0 ioctl(3, SNDCTL_TMR_TIMEBASE or TCGETS, 0xffd61868) = -1 EINVAL (Invalid argument) _llseek(3, 0, 0xffd61890, SEEK_CUR) = -1 ESPIPE (Illegal seek) fstat64(3, {st_mode=S_IFIFO|0600, st_size=0, ...}) = 0 read(3, (Not all processes could be identified, non-owned process info will not be shown, you would have to be root to see it all.) "tcp 0 0 0.0.0.0:9001"..., 4096) = 109 read(3, "", 4096) = 0 --- SIGCHLD (Child exited) @ 0 (0) --- fstat64(3, {st_mode=S_IFIFO|0600, st_size=0, ...}) = 0 close(3) = 0 rt_sigaction(SIGHUP, {0x1, [], SA_STACK|0x129b3d8}, {SIG_DFL, ~[HUP INT ILL TRAP KILL SEGV ALRM TERM STKFLT CHLD TSTP TTOU RT_1 RT_2 RT_3 RT_6 RT_9 RT_11 RT_14 RT_15 RT_16 RT_17 RT_20 RT_22], SA_RESTART|SA_RESETHAND|0x22302d0}, 8) = 0 rt_sigaction(SIGINT, {0x1, [], SA_STACK|0x129b3d8}, {SIG_DFL, [TRAP BUS FPE USR1 CHLD CONT TTOU VTALRM IO RTMIN], SA_RESTART|SA_RESETHAND|0x22302d0}, 8) = 0 rt_sigaction(SIGQUIT, {0x1, [], 0}, {SIG_DFL, ~[HUP INT ILL TRAP KILL SEGV ALRM TERM STKFLT CHLD TSTP TTOU RT_1 RT_2 RT_3 RT_6 RT_9 RT_11 RT_14 RT_15 RT_16 RT_17 RT_20 RT_22], SA_RESTART|SA_RESETHAND|0x22302d0}, 8) = 0 waitpid(20215, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0) = 20215 rt_sigaction(SIGHUP, {SIG_DFL, ~[HUP INT ILL TRAP KILL SEGV ALRM TERM STKFLT CHLD TSTP TTOU RT_1 RT_2 RT_3 RT_6 RT_9 RT_11 RT_14 RT_15 RT_16 RT_17 RT_20 RT_22], SA_NOCLDSTOP|SA_NOCLDWAIT}, NULL, 8) = 0 rt_sigaction(SIGINT, {SIG_DFL, [TRAP BUS FPE USR1 CHLD CONT TTOU VTALRM IO RTMIN], SA_NOCLDSTOP|SA_NOCLDWAIT}, NULL, 8) = 0 rt_sigaction(SIGQUIT, {SIG_DFL, ~[HUP INT ILL TRAP KILL SEGV ALRM TERM STKFLT CHLD TSTP TTOU RT_1 RT_2 RT_3 RT_6 RT_9 RT_11 RT_14 RT_15 RT_16 RT_17 RT_20 RT_22], SA_NOCLDSTOP|SA_NOCLDWAIT}, NULL, 8) = 0 chdir("/usr/lib/.khostd") = 0 pipe([3, 4]) = 0 pipe([5, 6]) = 0 clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0) = 20218 close(6) = 0 close(4) = 0 read(5, "", 4) = 0 close(5) = 0 ioctl(3, SNDCTL_TMR_TIMEBASE or TCGETS, 0xffd61868) = -1 EINVAL (Invalid argument) _llseek(3, 0, 0xffd61890, SEEK_CUR) = -1 ESPIPE (Illegal seek) read(3, "", 4096) = 0 --- SIGCHLD (Child exited) @ 0 (0) --- close(3) = 0 rt_sigaction(SIGHUP, {0x1, [], SA_RESTORER|SA_STACK|SA_RESTART|SA_INTERRUPT|SA_NODEFER|SA_RESETHAND|0x3d61850, (nil)}, {SIG_DFL, ~[HUP INT ILL TRAP KILL SEGV ALRM TERM STKFLT CHLD TSTP TTOU RT_1 RT_2 RT_3 RT_6 RT_9 RT_11 RT_14 RT_15 RT_16 RT_17 RT_20 RT_22], SA_NOCLDSTOP|SA_NOCLDWAIT}, 8) = 0 rt_sigaction(SIGINT, {0x1, [], SA_STACK|0x129b3d8}, {SIG_DFL, [HUP INT], SA_NOCLDSTOP|SA_NOCLDWAIT}, 8) = 0 rt_sigaction(SIGQUIT, {0x1, [], 0}, {SIG_DFL, ~[HUP INT ILL TRAP KILL SEGV ALRM TERM STKFLT CHLD TSTP TTOU RT_1 RT_2 RT_3 RT_6 RT_9 RT_11 RT_14 RT_15 RT_16 RT_17 RT_20 RT_22], SA_NOCLDSTOP|SA_NOCLDWAIT}, 8) = 0 waitpid(20218, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0) = 20218 rt_sigaction(SIGHUP, {SIG_DFL, ~[HUP INT ILL TRAP KILL SEGV ALRM TERM STKFLT CHLD TSTP TTOU RT_1 RT_2 RT_3 RT_6 RT_9 RT_11 RT_14 RT_15 RT_16 RT_17 RT_20 RT_22], SA_NOCLDSTOP|SA_NOCLDWAIT}, NULL, 8) = 0 rt_sigaction(SIGINT, {SIG_DFL, [HUP INT], SA_NOCLDSTOP|SA_NOCLDWAIT}, NULL, 8) = 0 rt_sigaction(SIGQUIT, {SIG_DFL, ~[HUP INT ILL TRAP KILL SEGV ALRM TERM STKFLT CHLD TSTP TTOU RT_1 RT_2 RT_3 RT_6 RT_9 RT_11 RT_14 RT_15 RT_16 RT_17 RT_20 RT_22], SA_NOCLDSTOP|SA_NOCLDWAIT}, NULL, 8) = 0 chdir("/home/deploy") = 0 stat64("/etc/cron.hourly/hichina", {st_mode=S_IFREG|0755, st_size=711660, ...}) = 0 pipe([3, 4]) = 0 pipe([5, 6]) = 0 clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0) = 20230 close(6) = 0 close(4) = 0 read(5, "", 4) = 0 close(5) = 0 ioctl(3, SNDCTL_TMR_TIMEBASE or TCGETS, 0xffd61868) = -1 EINVAL (Invalid argument) _llseek(3, 0, 0xffd61890, SEEK_CUR) = -1 ESPIPE (Illegal seek) read(3, "procps version 3.2.7\n", 4096) = 21 read(3, "", 4096) = 0 --- SIGCHLD (Child exited) @ 0 (0) --- close(3) = 0 rt_sigaction(SIGHUP, {0x1, [], SA_RESTORER|SA_STACK|SA_RESTART|SA_INTERRUPT|SA_NODEFER|SA_RESETHAND|0x3d61850, (nil)}, {SIG_DFL, ~[HUP INT ILL TRAP KILL SEGV ALRM TERM STKFLT CHLD TSTP TTOU RT_1 RT_2 RT_3 RT_6 RT_9 RT_11 RT_14 RT_15 RT_16 RT_17 RT_20 RT_22], SA_NOCLDSTOP|SA_NOCLDWAIT}, 8) = 0 rt_sigaction(SIGINT, {0x1, [], SA_STACK|0x129b3d8}, {SIG_DFL, [HUP INT], SA_NOCLDSTOP|SA_NOCLDWAIT}, 8) = 0 rt_sigaction(SIGQUIT, {0x1, [], 0}, {SIG_DFL, ~[HUP INT ILL TRAP KILL SEGV ALRM TERM STKFLT CHLD TSTP TTOU RT_1 RT_2 RT_3 RT_6 RT_9 RT_11 RT_14 RT_15 RT_16 RT_17 RT_20 RT_22], SA_NOCLDSTOP|SA_NOCLDWAIT}, 8) = 0 waitpid(20230, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0) = 20230 rt_sigaction(SIGHUP, {SIG_DFL, ~[HUP INT ILL TRAP KILL SEGV ALRM TERM STKFLT CHLD TSTP TTOU RT_1 RT_2 RT_3 RT_6 RT_9 RT_11 RT_14 RT_15 RT_16 RT_17 RT_20 RT_22], SA_NOCLDSTOP|SA_NOCLDWAIT}, NULL, 8) = 0 rt_sigaction(SIGINT, {SIG_DFL, [HUP INT], SA_NOCLDSTOP|SA_NOCLDWAIT}, NULL, 8) = 0 rt_sigaction(SIGQUIT, {SIG_DFL, ~[HUP INT ILL TRAP KILL SEGV ALRM TERM STKFLT CHLD TSTP TTOU RT_1 RT_2 RT_3 RT_6 RT_9 RT_11 RT_14 RT_15 RT_16 RT_17 RT_20 RT_22], SA_NOCLDSTOP|SA_NOCLDWAIT}, NULL, 8) = 0 write(1, "procps version 3.2.7\n", 21procps version 3.2.7 ) = 21 munmap(0xf7af1000, 135168) = 0 munmap(0xf7e70000, 630784) = 0 munmap(0xf7f0a000, 634880) = 0 munmap(0xf7d4e000, 1140104) = 0 exit_group(0) = ? [ Process PID=20214 runs in 32 bit mode. ] Thank you very much.

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• How do I implement the bg, &, and fg commands functionaliity in my custom unix shell program written in C

  - by user1631009

  I am extending the functionality of a custom unix shell which I wrote as part of my lab assignment. It currently supports all commands through execvp calls, in-built commands like pwd, cd, history, echo and export, and also redirection and pipes. Now I wanted to add support for running a command in background e.g. $ls -la& I also want to implement bg and fg job control commands. I know this can be achieved if I execute the command by forking a new child process and not waiting for it in the parent process. But how do I again bring this command to foreground using fg? I have the idea of entering each background command in a list assigning each of them a serial number. But I don't know how do I make the processes execute in the background, then bring them back to foreground. I guess wait() and waitpid() system calls would come handy but I am not that comfortable with them. I tried reading the man pages but still am in the dark. Can someone please explain in a layman's language how to achieve this in UNIX system programming? And does it have something to do with SIGCONT and SIGSTP signals?

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• TSAM 11gR1

  - by todd.little

  The Tuxedo System and Application Monitor (TSAM) 11gR1 release provides powerful new application monitoring capabilities, as well as significant improvements in ease of use. The first thing users will notice is the completely redesigned user interface in the TSAM console. Based on Oracle ADF, the console is much easier to navigate, provides a Web 2.0 style interface with dynamically updating panels, and a look and feel familiar to those that have used Oracle Enterprise Manager. Monitoring data can be viewed in both tabular and graphical form and exported to Excel for further analysis. A number of new metrics are collected and displayed in this release. Call path monitoring now displays CPU time, message size, total transport time, and client address giving even more end-to-end information about a specific Tuxedo request. As well the call path display has been completely revamped to make it much easier to see the branches of the call path. The call pattern display now provides statistics on successful vs failed calls, system and application failures, and end-to-end average elapsed time. Service monitoring now displays minimum and maximum message size, CPU usage, and client address. System server monitoring now includes monitoring the SALT gateway servers to provide detailed performance metrics about those servers. Perhaps the most significant new feature is the consolidation of alert definitions and policy management. In previous versions of TSAM, some alerts were defined and checked on the monitored systems while others were defined and checked in the console. Policy management could be performed on both the monitored node via environment variable or command, as well as from the console. Now all alert definitions and policy definitions are only made using the console. For alerts this means that regardless of where the alert is evaluated it is defined in one and only one place. Thus the plug-in alert mechanism of previous releases can now be managed using the TSAM console, making SLA alert definition much easier and cleaner. Finally there is support in TSAM for monitoring rehosted mainframe applications. The newly announced Oracle Tuxedo Application Runtime for CICS and Batch can be monitored in the TSAM console using traditional mainframe views of the application such as regions. Look for a future blog entry with more details on this as well as some entries providing a glimpse of the console. TSAM gives users a single point for monitoring the performance of all of their Tuxedo applications.

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• Oracle Security Inside Out Newsletter – June Edition

  - by Troy Kitch

  This month’s Information In Depth Newsletter, Security Inside Out Edition is now available. In this edition we look at the Gartner Security and Risk Management Summit 2011, discuss safeguarding data from threats with Oracle Database Vault, and reveal the latest database security webcasts, videos, training, events and more. If you don’t have a subscription to this bi-monthly security information update, you can sign up here at the bottom of the page.

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• MySQL Cluster 7.2: Over 8x Higher Performance than Cluster 7.1

  - by Mat Keep

  0 0 1 893 5092 Homework 42 11 5974 14.0 Normal 0 false false false EN-US JA X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:12.0pt; font-family:Cambria; mso-ascii-font-family:Cambria; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Cambria; mso-hansi-theme-font:minor-latin; mso-ansi-language:EN-US;} Summary The scalability enhancements delivered by extensions to multi-threaded data nodes enables MySQL Cluster 7.2 to deliver over 8x higher performance than the previous MySQL Cluster 7.1 release on a recent benchmark What’s New in MySQL Cluster 7.2 MySQL Cluster 7.2 was released as GA (Generally Available) in February 2012, delivering many enhancements to performance on complex queries, new NoSQL Key / Value API, cross-data center replication and ease-of-use. These enhancements are summarized in the Figure below, and detailed in the MySQL Cluster New Features whitepaper Figure 1: Next Generation Web Services, Cross Data Center Replication and Ease-of-Use Once of the key enhancements delivered in MySQL Cluster 7.2 is extensions made to the multi-threading processes of the data nodes. Multi-Threaded Data Node Extensions The MySQL Cluster 7.2 data node is now functionally divided into seven thread types: 1) Local Data Manager threads (ldm). Note – these are sometimes also called LQH threads. 2) Transaction Coordinator threads (tc) 3) Asynchronous Replication threads (rep) 4) Schema Management threads (main) 5) Network receiver threads (recv) 6) Network send threads (send) 7) IO threads Each of these thread types are discussed in more detail below. MySQL Cluster 7.2 increases the maximum number of LDM threads from 4 to 16. The LDM contains the actual data, which means that when using 16 threads the data is more heavily partitioned (this is automatic in MySQL Cluster). Each LDM thread maintains its own set of data partitions, index partitions and REDO log. The number of LDM partitions per data node is not dynamically configurable, but it is possible, however, to map more than one partition onto each LDM thread, providing flexibility in modifying the number of LDM threads. The TC domain stores the state of in-flight transactions. This means that every new transaction can easily be assigned to a new TC thread. Testing has shown that in most cases 1 TC thread per 2 LDM threads is sufficient, and in many cases even 1 TC thread per 4 LDM threads is also acceptable. Testing also demonstrated that in some instances where the workload needed to sustain very high update loads it is necessary to configure 3 to 4 TC threads per 4 LDM threads. In the previous MySQL Cluster 7.1 release, only one TC thread was available. This limit has been increased to 16 TC threads in MySQL Cluster 7.2. The TC domain also manages the Adaptive Query Localization functionality introduced in MySQL Cluster 7.2 that significantly enhanced complex query performance by pushing JOIN operations down to the data nodes. Asynchronous Replication was separated into its own thread with the release of MySQL Cluster 7.1, and has not been modified in the latest 7.2 release. To scale the number of TC threads, it was necessary to separate the Schema Management domain from the TC domain. The schema management thread has little load, so is implemented with a single thread. The Network receiver domain was bound to 1 thread in MySQL Cluster 7.1. With the increase of threads in MySQL Cluster 7.2 it is also necessary to increase the number of recv threads to 8. This enables each receive thread to service one or more sockets used to communicate with other nodes the Cluster. The Network send thread is a new thread type introduced in MySQL Cluster 7.2. Previously other threads handled the sending operations themselves, which can provide for lower latency. To achieve highest throughput however, it has been necessary to create dedicated send threads, of which 8 can be configured. It is still possible to configure MySQL Cluster 7.2 to a legacy mode that does not use any of the send threads – useful for those workloads that are most sensitive to latency. The IO Thread is the final thread type and there have been no changes to this domain in MySQL Cluster 7.2. Multiple IO threads were already available, which could be configured to either one thread per open file, or to a fixed number of IO threads that handle the IO traffic. Except when using compression on disk, the IO threads typically have a very light load. Benchmarking the Scalability Enhancements The scalability enhancements discussed above have made it possible to scale CPU usage of each data node to more than 5x of that possible in MySQL Cluster 7.1. In addition, a number of bottlenecks have been removed, making it possible to scale data node performance by even more than 5x. Figure 2: MySQL Cluster 7.2 Delivers 8.4x Higher Performance than 7.1 The flexAsynch benchmark was used to compare MySQL Cluster 7.2 performance to 7.1 across an 8-node Intel Xeon x5670-based cluster of dual socket commodity servers (6 cores each). As the results demonstrate, MySQL Cluster 7.2 delivers over 8x higher performance per data nodes than MySQL Cluster 7.1. More details of this and other benchmarks will be published in a new whitepaper – coming soon, so stay tuned! In a following blog post, I’ll provide recommendations on optimum thread configurations for different types of server processor. You can also learn more from the Best Practices Guide to Optimizing Performance of MySQL Cluster Conclusion MySQL Cluster has achieved a range of impressive benchmark results, and set in context with the previous 7.1 release, is able to deliver over 8x higher performance per node. As a result, the multi-threaded data node extensions not only serve to increase performance of MySQL Cluster, they also enable users to achieve significantly improved levels of utilization from current and future generations of massively multi-core, multi-thread processor designs.

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• Digital Storage for Airline Entertainment

  - by Bill Evjen

  by Thomas Coughlin Common flash memory cards The most common flash memory products currently in use are SD cards and derivative products (e.g. mini and micro-SD cards) Some compact flash used for professional applications (such as DSLR cameras) Evolution of leading flash formats Standardization –> market expansion Market expansion –> volume iNAND –> focus is on enabling embedded X3 iSSD –> ideal for thin form factor devices Flash memory applications Phones are the #1 user of flash memory Flash memory is used as embedded and removable storage in many mobile applications Flash memory is being used in computers as USB sticks and SSDs Possible use of flash memory in computer combined with HDDs (hybrid HDDs and paired or dual storage computers) It can be a removable card or an embedded card These devices can only handle a specific number of writes Flash memory reads considerably quicker than hard drives Hybrid and dual storage in computers SSDs can provide fast performance but they are expensive HDDs can provide cheap storage but they are relatively slow Combining some flash memory with a HDD can provide costs close to those of HDDs and performance close to flash memory Seagate Momentus XT hybrid HDD Various dual storage offerings putting flash memory with HDDs Other common flash memory devices USB sticks All forms and colors Used for moving files around Some sold with content on them (Sony Movies on USB sticks) Solid State Drives (SSDs) Floating Gate Flash Memory Cell When a bit is programmed, electrons are stored upon the floating gate This has the effect of offsetting the charge on the control gate of the transistor If there is no charge upon the floating gate, then the control gate’s charge determines whether or not a current flows through the channel A strong charge on the control gate assumes that no current flows. A weak charge will allow a strong current to flow through. Similar to HDDs, flash memory must provide: Bit error correction Bad block management NAND and NOR memories are treated differently when it comes to managing wear In many NOR-based systems no management is used at all, since the NOR is simply used to store code, and data is stored in other devices. In this case, it would take a near-infinite amount of time for wear to become an issue since the only time the chip would see an erase/write cycle is when the code in the system is being upgraded, which rarely if ever happens over the life of a typical system. NAND is usually found in very different application than is NOR Flash memory wears out This is expected to get worse over time Retention: Disappearing data Bits fade away Retention decreases with increasing read/writes Bits may change when adjacent bits are read Time and traffic are concerns Controllers typically groom read disturb errors Like DRAM refresh Increases erase/write frequency Application characteristics Music – reads high / writes very low Video – r high / writes very low Internet Cache – r high / writes low On airplanes Many consumers now have their own content viewing devices – do they need the airlines? Is there a way to offer more to consumers, especially with their own viewers Additional special content tie into airplane network access to electrical power, internet Should there be fixed embedded or removable storage for on-board airline entertainment? Is there a way to leverage personal and airline viewers and content in new and entertaining ways?

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• Oracle Releases New Mainframe Re-Hosting in Oracle Tuxedo 11g

  - by Jason Williamson

  I'm excited to say that we've released our next generation of Re-hosting in 11g. In fact I'm doing some hands-on labs now for our Systems Integrators in Italy in a couple of weeks and targeting Latin America next month. If you are an SI, or Rehosting firm and are looking to become an Oracle Partner or get a better understanding of Tuxedo and how to use the workbench for rehosting...drop me a line. Oracle Tuxedo Application Runtime for CICS and Batch 11g provides a CICS API emulation and Batch environment that exploits the full range of Oracle Tuxedo's capabilities. Re-hosted applications run in a multi-node, grid environment with centralized production control. Also, enterprise integration of CICS application services benefits from an open and SOA-enabled framework. Key features include: CICS Application Runtime: Can run IBM CICS applications unchanged in an application grid, which enables the distribution of large workloads across multiple processors and nodes. This simplifies CICS administration and can scale to over 100,000 users and over 50,000 transactions per second. 3270 Terminal Server: Protects business users from change through support for tn3270 terminal emulation. Distributed CICS Resource Management: Simplifies deployment and administration by allowing customers to run CICS regions in a distributed configuration. Batch Application Runtime: Provides robust IBM JES-like job management that enables local or remote job submissions. In addition, distributed batch initiators can enable parallelization of jobs and support fail-over, shortening the batch window and helping to meet stringent SLAs. Batch Execution Environment: Helps to run IBM batch unchanged and also supports JCL functionality and all common batch utilities. Oracle Tuxedo Application Rehosting Workbench 11g provides a set of automated migration tools integrated around a central repository. The tools provide high precision which results in very low error rates and the ability to handle large applications. This enables less expensive, low-risk migration projects. Key capabilities include: Workbench Repository and Cataloguer: Ensures integrity of the migrated application assets through full dependency checking. The Cataloguer generates and maintains all relevant meta-data on source and target components. File Migrator: Supports reliable migration of datasets and flat files to an ISAM or Oracle Database 11g. This is done through the automated migration utilities for data unloading, reloading and validation. It also generates logical access functions to shield developers from data repository changes. DB2 Migrator: Similarly, this tool automates the migration of DB2 schema and data to Oracle Database 11g. COBOL Migrator: Supports migration of IBM mainframe COBOL assets (OLTP and Batch) to open systems. Adapts programs for compiler dialects and data access variations. JCL Migrator: Supports migration of IBM JCL jobs to a Tuxedo ART environment, maintaining the flow and characteristics of batch jobs.

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• Free eBook: 45 Database Performance Tips for Developers

  - by TATWORTH

  Originally posted on: http://geekswithblogs.net/TATWORTH/archive/2014/05/25/free-ebook-45-database-performance-tips-for-developers.aspxAt http://www.red-gate.com/products/sql-development/sql-prompt/entrypage/sql-performance-tips-ebook, RedGate are offering a free E-Book, “45 Database Performance Tips for Developers” They also offer on the same page, a 14-day trial of SQL Prompt, an intellisence-style add-on for SSMS (SQL Server Management Studio).

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• Bruce Lee Software development.

  - by DesigningCode

  "Styles tend to not only separate men - because they have their own doctrines and then the doctrine became the gospel truth that you cannot change. But if you do not have a style, if you just say: Well, here I am as a human being, how can I express myself totally and completely? Now, that way you won't create a style, because style is a crystallization. That way, it's a process of continuing growth."- Bruce Lee This is kind of how I see software development. What I enjoyed in the the early days of Agile, things seemed very dynamic, people were working out all manner of ways of doing things. It was technique oriented, it was very fluid and people were finding all kinds of good ways of doing things.  Now when I look at the world of “Agile” it seems more crystalized.  In fact that seemed to be a goal, to crystalize the goodness so everyone can share.   I think mainly because it seems a heck of a lot easier to market.  People are more willing to accept a well defined doctrine and drink the Kool Aid.   Its more “corporate” or “professional”. But the process of crystalizing the goodness actually makes it bad.   But luckily in the world of software development there are still many people who are more focused on “how can I express myself totally and completely”.   We are seeing expressive languages, expressive frameworks, tooling that helps you to better express yourself, design techniques that allow you to better express your intent.    I love that stuff! So beware, be very cautious of anyone offering you new age wisdom based on crystals!

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• Can't get Monit to work

  - by Andrea

  I am trying to configure Monit on my local machine to get a taste at how it works, but I have some issues. What I am trying to do is to get any evidence that Monit is up and running correctly and is actually monitoring something. So my /etc/monit/monitrc looks like set daemon 60 set logfile /var/log/monit.log set idfile /var/lib/monit/id set statefile /var/lib/monit/state set eventqueue basedir /var/lib/monit/events slots 100 set httpd port 2812 and allow username:password check process apache2 with pidfile /usr/local/apache/logs/apache2.pid start program = "/etc/init.d/apache2 start" stop program = "/etc/init.d/apache2 stop" if failed port 6543 protocol http then exec "/usr/bin/touch /tmp/monit" If I understand correctly, since apache does not listen on port 6543 (it is just a random number) I should get an error, and as a consequence the file /tmp/monit should be created. So I start monit by sudo service monit start sudo monit monitor apache2 Unfortunately no such file is created. Instead the web console shows an error for apache - execution failed. The log says 'apache2' failed to start. What am I doing wrong? EDIT As suggested in the comments, I ran monit in verbose mode, by monit -vv monitor apache2 (the exact command suggested in the comments failed). The output is Runtime constants: Control file = /etc/monit/monitrc Log file = /var/log/monit.log Pid file = /var/run/monit.pid Debug = True Log = True Use syslog = False Is Daemon = True Use process engine = True Poll time = 60 seconds with start delay 0 seconds Expect buffer = 256 bytes Event queue = base directory /var/lib/monit/events with 100 slots Mail from = (not defined) Mail subject = (not defined) Mail message = (not defined) Start monit httpd = True httpd bind address = Any/All httpd portnumber = 2812 httpd signature = True Use ssl encryption = False httpd auth. style = Basic Authentication The service list contains the following entries: Process Name = apache2 Pid file = /usr/local/apache/logs/apache2.pid Monitoring mode = active Start program = '/etc/init.d/apache2 start' timeout 30 second(s) Stop program = '/etc/init.d/apache2 stop' timeout 30 second(s) Existence = if does not exist 1 times within 1 cycle(s) then restart else if succeeded 1 times within 1 cycle(s) then alert Pid = if changed 1 times within 1 cycle(s) then alert Ppid = if changed 1 times within 1 cycle(s) then alert Port = if failed localhost:6543 [HTTP via TCP] with timeout 5 seconds 1 times within 1 cycle(s) then exec '/usr/bin/touch /tmp/prova-monit' timeout 0 cycle(s) else if succeeded 1 times within 1 cycle(s) then alert System Name = system_andrea-Vostro-420-Series Monitoring mode = active

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• How should code reviews be Carried Out?

  - by Graviton

  My previous question has to do with how to advance code reviews among the developers. Here I am interested in how a code review session should be carried out, so that both the reviewer and reviewed are feeling comfortable with it. I have done some code reviews before and the experience has been very unpleasant. My previous manager would come to us --on an ad hoc basis-- and tell us to explain our code to him. Since he wasn't very familiar with the code base, whenever he would ask me to explain my code, I'd find myself spending a huge amount of time explaining the most basic structure of my code. As a result, each review would last much too long, and the process would leave both of us exhausted. Once I was done explaining my work, he would continue by raising issues with it. Most of the issues he raised were cosmetic in nature ( e.g, don't use region for this code block, change the variable name from xxx to yyy even though the later makes even less sense, and so on). After trying this process for few rounds, we found the review session didn't derive much benefits for either of us, and we stopped. How would you go about making each code review a natural, enjoyable, thought stimulating, bug-fixing and mutual-learning experience? Also, how frequently you do your code reviews - as soon as the code is checked in? Do you allocate a fixed time every week to do this? What are the guidelines that you follow during your code reviews?

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• A list of game mechanics

  - by Iain

  I'm trying to compile a list of game mechanics, by which I mean high-level/meta game mechanics like Cooperation, Resource Management, Chance and Time Manipulation rather than low level mechanics like running, jumping climbing ladders, etc Does any one have any suggestions or can point me to good existing lists? My WIP list is already proving to be quite useful to me in the way I think about games.

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• How do i use storage spaces?

  - by Lucas

  I am planning on building a new windows 2012 server for a client and I have no experience in doing so. I have built many linux servers for them and setting up software raid during the install is a trivial matter. I have been unable to confirm that the windows 2012 install process has an analogous process for setting up Storage Spaces during the install. Can Storage Spaces be used as an installation target (configured during setup?) Is it capable of mirror+stripe (RAID10)? We have not ordered the hardware yet, so I'm looking for clarification.

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• Linux: close a program with command line (not kill it)

  - by CodeNoob

  Some applications only allow one running instance (like eclipse, if you want to use the same workspace). So if I log in from another location, I have to kill/close the application that was open when I previously logged in from another location. I always use kill command to kill the running process. But, if you kill a process, it might not save some states that are useful for future usage. However, if you "close" it properly byclicking on the close button, for example, it will save the states properly. Is there a way to properly "close" an application from command line? I know this can vary from applications, so let's be a bit more generic: how to send a signal to another running application, and this signal works just as if we click the "close" button in the top bar? thanks!

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• How to avoid general names for abstract classes?

  - by djechlin

  In general it's good to avoid words like "handle" or "process" as part of routine names and class names, unless you are dealing with (e.g.) file handles or (e.g.) unix processes. However abstract classes often don't really know what they're going to do with something besides, say, process it. In my current situation I have an "EmailProcessor" that logs into a user's inbox and processes messages from it. It's not really clear to me how to give this a more precise name, although I've noticed the following style matter arises: better to treat derived classes as clients and named the base class by the part of the functionality it implements? Gives it more meaning but will violate is-a. E.g. EmailAcquirer would be a reasonable name since it's acquiring for the derived class, but the derived class won't be acquiring for anyone. Or just really vague name since who knows what the derived classes will do. However "Processor" is still too general since it's doing many relevant operations, like logging in and using IMAP. Any way out of this dilemma? Problem is more evident for abstract methods, in which you can't really answer the question "what does this do?" because the answer is simply "whatever the client wants."

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• Enhancing, Employing, Engaging SharePoint 2010

  - by Sahil Malik

  SharePoint 2010 Training: more information Recently I completed a recording for the Microsoft Partner Learning Center (PLC) on three topics.The videos are now available for your viewing pleasure, I hope you find them useful.   Enhancing SharePoint 2010 – The development story The various ways to deliver functionality in SharePoint with most of the focus surrounding Visual Studio 2010, and SharePoint Designer 2010 where necessary. Watch Video (https://training.partner.microsoft.com/learning/app/management/LMS_ActDetails.aspx?UserMode=0&ActivityId=732988) Read full article ....

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• Apache Unclean shutdown of previous apache run

  - by Jakub Arnold

  I'm having problem with running Apache2.2 on my Vista machine. When I clean install Apache it works just fine, but after I installed PHP, I'm getting this error message in logs. [Fri Oct 23 21:29:02 2009] [warn] pid file C:/Dev/Apache2.2/logs/httpd.pid overwritten -- Unclean shutdown of previous Apache run? Apache service was stopped when installing PHP. I did only one shutdown before instalation via Apache Service Monitor. Deleting httpd.pid and starting again doesn't help. I even tried to lookup process with PID in that file, but there is no such process.

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• How to Convert Your Nice Designs to Wordpress

  If you already spent ample time on the net, you have probably heard about WordPress before. It is an easy to use blog platform that also seconds as a fully competent content management system all ove... [Author: Kewin Alexander - Web Design and Development - April 12, 2010]

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• July, the 31 Days of SQL Server DMO’s – Day 24 (sys.dm_db_index_operational_stats)

  - by Tamarick Hill

  The sys.dm_db_index_operational_stats Dynamic Management Function returns information about the IO, locking, and access methods for the indexes that you currently have on your SQL Server Instance. This function takes four input parameters which are (1) database_id, (2) object_id, (3) index_id, and (4) partition_number. Let’s have a look at the results from this function against our AdventureWorks2012 database. This function returns a ton of columns, so not only will I not attempt to describe each of the columns, I wont even attempt to display all of them here. My query below will give you a subset of the columns returned from this function. SELECT database_id, object_id, index_id, partition_number, leaf_insert_count, leaf_delete_count, leaf_update_count, leaf_ghost_count, nonleaf_insert_count, nonleaf_delete_count, nonleaf_update_count, range_scan_count, forwarded_fetch_count, row_lock_count, row_lock_wait_count, page_lock_count, page_lock_wait_count, Index_lock_promotion_attempt_count, index_lock_promotion_count, page_compression_attempt_count, page_compression_success_count FROM sys.dm_db_index_operational_stats(db_id('AdventureWorks2012'), NULL, NULL, NULL) The first four columns in the result set represent the values that we passed in as our input parameters. If you use NULL’s as I did, then you will see results for every index on your system. I specified a database_id so my result set only shows those records pertaining to my AdventureWorks2012 database. The next columns in the result set provide you with information on how may inserts, deletes, or updates that have taken place on your leaf and nonleaf index levels. The nonleaf levels would refer to the intermediate and root index levels. In the middle of these you see a leaf_ghost_count column, which represents the number of records that have been logically deleted and marked as “ghosted”  and are waiting on the background ghost cleanup process to physically remove them. The range_scan_count column represents the number of range or table scans that have been performed against an index. The forwarded_fetch_count column represents the number of rows that were returned from a forwarding row pointer. The row_lock_count and row_lock_wait_count represent the number of row locks that have been requested for an index and the number of times SQL has had to wait on a row lock respectively. The page_lock_count and page_lock_wait_count represent the number of page locks that have been requested for an index and the number of times SQL has had to wait on a page lock respectively. The index_lock_promotion_attempt_count represents the number of times the database engine has attempted to promote a lock to the index level. The index_lock_promotion_count column displays how many times that index lock promotion was successful. Lastly the page_compression_attempt_count and page_compression_success_count represents how many times a page was attempted to be compressed and how many times the attempt was successful. As you can see there is a ton of information returned from this DMV. The DMV we reviewed on yesterday (sys.dm_db_index_usage_stats) provided you with good information on when and how indexes have been used, but this DMF takes an even deeper dive into these statistics. If you are interested in performing a very detailed analysis on the operational stats of your indexes, this is not only a good place to start, but more than likely the best place. For more information on this Dynamic Management Function, please see the below Books Online link: http://msdn.microsoft.com/en-us/library/ms174281.aspx Follow me on Twitter @PrimeTimeDBA

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