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Articles indexed Monday August 25 2014

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• Creating a ComboBox with one or more separator items?

  - by Steve

  I'm using Delphi7 and I'd like to have a ComboBox with separator items (Just like in popup menus). I've seen this beautifully implemented in Mozilla Sunbird (I know, it's not Delphi...) the following way: The separator item is a simple gray line drawn in the center of the item If you hover over the separator with the mouse, the selection doesn't appear If the user clicks the separator, it's not selected either AND the combobox doesn't closeup. No. 1 could be implemented using DrawItem. I could live without No. 2 because I have no idea about that. For No. 3 I'm asking for your help. I've figured out that straight after closing up a CBN_CLOSEUP message is sent to the combobox. I thought about hooking the window proc and if CBN_CLOSEUP is sent to a certain combobox then countering it. But I'm unsure if this is the best solution, or maybe there are other, more elegant ways? Whatever the solution is, I'd like to have a standard ComboBox which supports WinXP/Vista/7 theming properly. Thanks! Edit: For a working component please see this thread: Can you help translating this very small C++ component to Delphi?

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• What is a good use case for static import of methods?

  - by Miserable Variable

  Just got a review comment that my static import of the method was not a good idea. The static import was of a method from a DA class, which has mostly static methods. So in middle of the business logic I had a da activity that apparently seemed to belong to the current class: import static some.package.DA.*; class BusinessObject { void someMethod() { .... save(this); } } The reviewer was not keen that I change the code and I didn't but I do kind of agree with him. One reason given for not static-importing was it was confusing where the method was defined, it wasn't in the current class and not in any superclass so it too some time to identify its definition (the web based review system does not have clickable links like IDE :-) I don't really think this matters, static-imports are still quite new and soon we will all get used to locating them. But the other reason, the one I agree with, is that an unqualified method call seems to belong to current object and should not jump contexts. But if it really did belong, it would make sense to extend that super class. So, when does it make sense to static import methods? When have you done it? Did/do you like the way the unqualified calls look? EDIT: The popular opinion seems to be that static-import methods if nobody is going to confuse them as methods of the current class. For example methods from java.lang.Math and java.awt.Color. But if abs and getAlpha are not ambiguous I don't see why readEmployee is. As in lot of programming choices, I think this too is a personal preference thing. Thanks for your response guys, I am closing the question.

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• New Horizons arrives at Neptune on a 25-year anniversary!

  - by TATWORTH

  Originally posted on: http://geekswithblogs.net/TATWORTH/archive/2014/08/25/new-horizons-arrives-at-neptune-on-a-25-year-anniversary.aspxToday the New Horizons probe to the planet Pluto crosses the orbit of the planet Neptune. By a “cosmic coincidence”, this is exactly 25 years since Voyager 2 took close-up pictures of Neptune and its satellite Triton. For more see http://pluto.jhuapl.edu/mission/passingplanets/passingPlanets_current.php New Horizons current position is shown at http://pluto.jhuapl.edu/mission/whereis_nh.php

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• Nginx/puma rhel unix socket permission error?

  - by Kevin Brown

  When I try to start my puma server, I get the error: /.rvm/gems/ruby-2.1.1/gems/puma-2.9.0/lib/puma/binder.rb:275:in `initialize': Permission denied - connect(2) for "/var/run/nvhbase.sock" (Errno::EACCES) My sites-available/nvhbase.conf file: upstream nvhbase { server unix:/var/run/nvhbase.sock; } server { listen 80 default_server; server_name 207.131.132.219; root /home/vf032500/dev/nvh/public; location / { proxy_pass http://unix:/var/run/nvhbase.sock; proxy_http_version 1.1; proxy_set_header Upgrade $http_upgrade; proxy_set_header Connection $connection_upgrade; proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-Proto https; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_redirect off; } } I don't know a lot about unix sockets and everything works fine using tcp/puma default. My rails app is in my user directory. Is that the problem?? socket is starting in /var/run--I can start in /tmp, but I've heard that's bad practice? Provided I start the server in /tmp, I then can't access it via the server's ip--then what? I'm happy to provide any needed info, I just don't know a whole lot about server/nginx/puma.

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• LIVE Video Streaming with Nginx + PHP-FPM / Process Timeout

  - by user3393046

  I have a live video streaming in my server using nginx + php. the php file reas a live streaming and it directly sends it to the client. I have only one problem. The problem is that i want each request to be in a new process of php-fpm. In a few words i don't want to have idle timeout for a process but instead i want them to close instant when a request is being closed. With idle timeout i have huge problems which are hard to explain at the moment but i'm really sure that if i disable the idle timeout everything will be perfect. Is there any way to do this? I'm using on demand php-fpm

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• Error when reinstalling apache2

  - by ProfGhost

  I did an dist-upgrade on Debian Wheezy yesterday and got an error with syslog-nc-core. I found that i should try to reinstall it and tried but it ended with an error that apache2 isnt configured. I purged it also and when i now try to reinstall i get the error Setting up apache2 (2.4.10-1) ... Directory /etc/apache2/conf.d is not empty - leaving as is Please note, that directory is considered obsolete and not read anymore by default zz010_psa_httpd.conf ERROR: Config file dir.conf not properly enabled: /etc/apache2/mods-enabled/dir.conf is a real file, not touching it dpkg: error processing package apache2 (--configure): subprocess installed post-installation script returned error exit status 1 Errors were encountered while processing: apache2 E: Sub-process /usr/bin/dpkg returned an error code (1)

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• Upgrading to Java 7u65 breaks my Deployment Rule Set for Oracle applications

  - by Don Atreides

  My company uses an older version of an Oracle application that requires Java 6u45. Naturally we want to be secure, so we use a Deployment Rule Set to specify 6u45 for that internal application and let other applications use 7u60. Now that we're ready to upgrade the Java 7 half to 7u67, the Oracle application breaks with "Deployment Rule Set required version 1.6.0_45 not available." Of course it is available, it just can't find it for some reason. As a test, I specified that JavaTester.org should use 6u45 also and it works fine with no issues. But when I try to use the same configuration (7u67 and 6u45) against the Oracle application it fails every time. If I downgrade to 7u60, it works. 7u65 or higher, it breaks. The Oracle application hasn't changed so it must be something different in how 7u65+ is handling Deployment Rule Sets or pathing or something. I'm at a complete loss. ruleset.xml: <?xml version="1.0"?> -<ruleset version="1.0+"> -<rule> <id location="*.mycorp.com"/> <action version="1.6.0_45" permission="run"/> </rule> -<rule> <id location="http://javatester.org"/> <action version="1.6.0_45" permission="run"/> </rule> </ruleset>

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• How to get an unprivileged public status page showing in OpenWrt 12.09 or newer?

  - by lkraav

  For the use case where the WAN connection goes down, but employees can still access wifi, I'd like them to be able to check on some sort of a public router status page in their problem reports. This may have been available on DD-WRT at one point (or still is), I can't 100% recall anymore. Going through all LuCI's screens with a fine-toothed comb and googling a fair amount isn't producing results. Anyone have a solution?

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• Netgear VPN can't access specific server

  - by Critologist

  I have a Netgear FVS318N configured with a VPN. I'm trying to access my call recorder with the provided software from another office. I've already setup the VPN connection, and it works. I can connect and ping the remote router and a few other things on the network. However, I can't ping or connect to my call recorder. If I move outside of the office network (i.e. connect directly to the cable modem or via a mobile hotspot), I can connect and ping the call recorder just fine. The office has a simple Linksys WRT54G router and is using AT&T Uverse. The remote location is using Charter Cable with a Netgear FVS318N. Has anyone ever encountered anything like this before? I've setup an identical VPN previously for a different client using similar hardware and never encountered this. Thanks in advance!

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• Using a non-validated SED on a Dell R720

  - by a coder

  We were given a Dell R720 a couple years ago, and the machine currently has standard 300GB 3.5" SAS 15k drives. Our RAID controller is a Perc H710. We need to update our disks to FIPS 140-2 certified SED. According to Dell, they have only one tested/validated FIPS SED for this machine/controller, but it is a 7200rpm 3.5" unit. I'm showing that Dell offers a 600GB 15k FIPS SED in 3.5" configuration (Dell part number 342-0605), but they say they haven't validated or tested to know if it works. They informed us that we would not void our warranty in using this non-validated drive. How likely is it that our R720 with H710 controller will work with the non-validated drive? Are there significant differences in how drive manufacturers build SED that would prevent them from working consistently across different controllers?

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• debian LTS : how to keep packages up-to-date with last security fixes using apt

  - by Quentin

  What's the best way to keep packages up-to-date (ie with the last security fixes) without worried about major version update ? For instance, apache2 for squeezeis is 2.2.16 (https://packages.debian.org/source/squeeze/apache2) However, last apache2 version for the 2.2.x branch is 2.2.27 Test repository can't be used since they use the 2.4.x versions and I'd like to stick on the 2.2.x (to avoid migration issues) How would you handle this situation and how can I update to 2.2.27 ?

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• CentOS send mail with external SMTP server and without local daemons

  - by Vilx-

  I've got a little old server with CentOS 6.5 on it. The hardware is old and crappy, but enough for what it has to do. Which consists of SSH (+SFTP), Apache, PHP and MySQL. Still, I'm trying to cut away all that I can. One thing that it does not need to do is to be an SMTP server. There are no mailboxes on it and nobody will ever route mail through it. However I do want it to send me an email when something goes wrong. Also, the webpages will send emails from PHP. So that brings me to the question - can I set up the mail system in such a way that there isn't an expensive mailer daemon sitting in the background with queues and whatnotelse, but rather every email is directly and immediately delivered to an external SMTP server? And how do I go about it?

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• Isolated Network Set-Up

  - by Isaac Kleinman

  I am looking to set up a small network for a client which would be isolated from his primary network. (I'm hoping to set-up the additional network as VMs on the primary network.) I've instructed the client to request a bunch of static ip addresses from his ISP, but I'm not sure how to proceed with setting this up. What hardware will I need and how do I go about the configuration? Heavy security is not my concern. All that's really required is that web requests from the two networks be presented to the outside world with different ip addresses.

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• PostgreSQL user authentication against PAM

  - by elmuerte

  I am trying to set up authentication via PAM for PostgreSQL 9.3. I already managed to get this working on an Ubuntu 12.04 server, but I am unable to get this working on a Centos-6 install. The relevant pg_hba.conf line: host all all 0.0.0.0/0 pam pamservice=postgresql93 The pam.d/postgressql93 is the default config shipped with the official postgresql 9.3 package: #%PAM-1.0 auth include password-auth account include password-auth When a user tries to authenticate the following is reported in secure log: hostname unix_chkpwd[31807]: check pass; user unknown hostname unix_chkpwd[31808]: check pass; user unknown hostname unix_chkpwd[31808]: password check failed for user (myuser) hostname postgres 10.1.0.1(61459) authentication: pam_unix(postgresql93:auth): authentication failure; logname= uid=26 euid=26 tty= ruser= rhost= user=myuser The relevant content of password-auth config is: auth required pam_env.so auth sufficient pam_unix.so nullok try_first_pass auth requisite pam_succeed_if.so uid >= 500 quiet auth required pam_deny.so account required pam_unix.so account sufficient pam_localuser.so account sufficient pam_succeed_if.so uid < 500 quiet account required pam_permit.so The problem is with the pam_unix.so. It is unable to validate the password, and unable to retrieve the user info (when I remove the auth entry of pam_unix.so). The Centos-6 install is only 5 days old, so it does not have a lot of baggage. The unix_chkpwd is suid and has execute rights for everybody, so it should be able to check the shadow file (which has no privileges at all?).

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• nginx not starting at reboot after gitlab installation

  - by Luis Masuelli

  I installed nginx (1.6) in ubuntu server (14.04). After that, I installed gitlab. I didn't realize it came with its own nginx. I uninstalled gitlab later. After installing gitlab, my first nginx began to never start at boot as a service. This means: If I hit sudo netstat -anp I don't see the corresponding entry in 0.0.0.0:80. If I hit sudo nginx -s reload and then sudo netstat -anp I see the corresponding entry I mentioned. I thought I could fixing it by doing: sudo update-rc.d nginx remove sudo update-rc.d nginx defaults After removing gitlab, but it did not help me (i.e. after reboot, nginx does not automatically start). I revised the /etc/init.d/nginx just to see that $DAEMON is still /usr/sbin/nginx. Question: What should I check to see the problem here (or: what could the problem be)? sudo nginx -s reload works with no problems at all.

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• Installing XAMPP on a live server [on hold]

  - by Eeeearth

  I am trying to get phpMyAdmin on my live server so I can do database programming on a live server rather than a local one. I have 2 servers at the moment, one through 1&1 which is a Windows Server 2008 and through RAM-Host which is running CentOS. I am just trying to figure out what I need to do to install XAMPP on the LIVE server, as opposed to accessing through localhost, for obvious reasons. Do I install XAMPP the same way I did on my local, but on my server? Essentially I would like to access the phpmyadmin via: mydomain.com/phpmyadmin, just as I would locally using localhost/phpmyadmin. Again, sorry for any ignorance here I just can not find any information on what to do for this.

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• Integrating Nagios with a ticketing system/incident mnagement system

  - by sektor

  Is there a free ticketing system/incident management system which will help me in achieving the following? 1) If a service goes down then Nagios alerts the on-duty staff and pushes the status to some backend or DB as a ticket, say the initial status is "New". 2) The on-duty staff logs in through a frontend and acknowledges the new ticket by marking it as "In progress", so now the status of the ticket changes from "New" to "In progress". 3) If even after "n" number of minutes no person from on-duty staff has changed the ticket status to "In progress" then Nagios alerts the next level of contacts. Although if the on-duty staff has acknowledged the ticket then there is no need to alert the next level. 4) When the service comes up Nagios closes the ticket by marking it "Closed" Now I already have Nagios monitoring set up and currently it alerts by sending text messages and mails, what I'm looking for is some framework which only escalates the issue(alerts the second level) if the first level(on-duty staff) fails to respond to the initial alert. By "responding to the alert" I mean, the on-duty staff can login via some frontend and basically change the status to something like "Acknowledged" or "In progress".

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• Restarting shell script with &disown using Monit

  - by Solas Admin

  I have a shell script that runs a C++ backend mail system (PluginHandler). I need to monitor this process in Monit and restart it if it fails. The script: export LD_LIBRARY_PATH=/usr/local/lib/:/CONFIDENTAL/CONFIDENTAL/Common/ cd PluginHandler/ ./PluginHandler This script does not have a PID file and we run this script by executing ./rundaemon.sh &disown ./pluginhandler starts the process and starts logging into /etc/output/output.log I stop the process by identifying the process ID with [ps -f | grep PluginHandler] and then killing the process. I can check the process in Monit just fine, but I think Monit is starting the process if it is not running but it can't do &disown so the process ends as soon as it starts. This is the code in the monitrc file for checking this process: check process Backend matching "PluginHandler" if not exist then alert start "PATH/TO/SCRIPT/rundaemon.sh &disown" alert [email protected] only on {timeout} with mail-format {subject: "[BLAH"} I tried to stop the script from terminating by modifying the script like the following but this does not work either. export LD_LIBRARY_PATH=/usr/local/lib/:/home/CONFIDENTAL/production/CONFIDENTAL/Common/ cd PluginHandler/ (nohup ./PluginHandler &) return Any help to write a proper Monit rules to resolve this issue would be greatly appreciated :)

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• View a pdf with quick webview though apache proxy

  - by Musa

  I have a site(IIS) that is accessed via a proxy in apache(on an IBM i). This site serves PDFs which has quick web view and if I access a pdf directly from the IIS server the PDFs starts to display immediately but if I go through the proxy I have to wait until the entire pdf downloads before I can view it. In the apache config file I use ProxyPass /path/ http://xxx.xxx.xxx.xxx/ <LocationMatch "/path/"> Header set Cache-Control "no-cache" </LocationMatch> I tried adding SetEnv proxy-sendcl to LocationMatch directive this had no effect. The PDFs that view quickly makes a lot of partial requests This is the initial request and response headers GET http://xxx.xxx.xxx.xxx/xxx.PDF HTTP/1.1 Host: xxx.xxx.xxx.xxx Proxy-Connection: keep-alive Cache-Control: no-cache Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8 Pragma: no-cache User-Agent: Mozilla/5.0 (Windows NT 6.2; rv:9.0.1) Gecko/20100101 Firefox/9.0.1 Accept-Encoding: gzip,deflate,sdch Accept-Language: en-US,en;q=0.8 Cookie: chocolatechip HTTP/1.1 200 OK Via: 1.1 xxxxxxxx Connection: Keep-Alive Proxy-Connection: Keep-Alive Content-Length: 15330238 Date: Mon, 25 Aug 2014 12:48:31 GMT Content-Type: application/pdf ETag: "b6262940bbecf1:0" Server: Microsoft-IIS/7.5 Last-Modified: Fri, 22 Aug 2014 13:16:14 GMT Accept-Ranges: bytes X-Powered-By: ASP.NET This is a partial request and response GET http://xxx.xxx.xxx.xxx/xxx.PDF HTTP/1.1 Host: xxx.xxx.xxx.xxx Proxy-Connection: keep-alive Cache-Control: no-cache Pragma: no-cache User-Agent: Mozilla/5.0 (Windows NT 6.2; rv:9.0.1) Gecko/20100101 Firefox/9.0.1 Accept: */* Referer: http://xxx.xxx.xxx.xxx/xxxx.PDF Accept-Encoding: gzip,deflate,sdch Accept-Language: en-US,en;q=0.8 Cookie: chocolatechip Range: bytes=0-32767 HTTP/1.1 206 Partial Content Via: 1.1 xxxxxxxx Connection: Keep-Alive Proxy-Connection: Keep-Alive Content-Length: 32768 Date: Mon, 25 Aug 2014 12:48:31 GMT Content-Range: bytes 0-32767/15330238 Content-Type: application/pdf ETag: "b6262940bbecf1:0" Server: Microsoft-IIS/7.5 Last-Modified: Fri, 22 Aug 2014 13:16:14 GMT Accept-Ranges: bytes X-Powered-By: ASP.NET These are the headers I get if I go through he proxy GET /path/xxx.PDF HTTP/1.1 Host: domain:xxxx Connection: keep-alive Cache-Control: no-cache Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8 Pragma: no-cache User-Agent: Mozilla/5.0 (Windows NT 6.2; rv:9.0.1) Gecko/20100101 Firefox/9.0.1 Accept-Encoding: gzip,deflate,sdch Accept-Language: en-US,en;q=0.8 HTTP/1.1 200 OK Date: Mon, 25 Aug 2014 13:28:42 GMT Server: Microsoft-IIS/7.5 Content-Type: application/pdf Last-Modified: Fri, 22 Aug 2014 13:16:14 GMT Accept-Ranges: bytes ETag: "b6262940bbecf1:0"-gzip X-Powered-By: ASP.NET Cache-Control: no-cache Expires: Thu, 24 Aug 2017 13:28:42 GMT Vary: Accept-Encoding Content-Encoding: gzip Keep-Alive: timeout=300, max=100 Connection: Keep-Alive Transfer-Encoding: chunked I'm guessing its because the proxy uses Transfer-Encoding: chunked but I'm not sure and wasn't able to turn it off to check. Browser Chrome 36.0.1985.143 m Using the native PDF viewer Any help to get the pdf quick web view through the proxy working would be appreciated.

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• Centos mysql version is 5.5 however PHPmyadmin still says version 5.1

  - by Marc Rasmussen

  When i run the following in my console: [root@****~]# mysql -u root -p -e 'SELECT VERSION();' Enter password: +-----------+ | VERSION() | +-----------+ | 5.5.39 | +-----------+ Which should be the correct version. However when i enter my PHPMYADMIN on my server it has the following specs: Server: Localhost via UNIX socket Program: MySQL Programversion: 5.1.73 - Source distribution So which version is the correct one and how do i make sure that the database is running on 5.5? Note I have already restarted sql several times without any changes

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• Corosync :: Restarting some resources after Lan connectivity issue

  - by moebius_eye

  I am currently looking into corosync to build a two-node cluster. So, I've got it working fine, and it does what I want to do, which is: Lost connectivity between the two nodes gives the first node '10node' both Failover Wan IPs. (aka resources WanCluster100 and WanCluster101 ) '11node' does nothing. He "thinks" he still has his Failover Wan IP. (aka WanCluster101) But it doesn't do this: '11node' should restart the WanCluster101 resource when the connectivity with the other node is back. This is to prevent a condition where node10 simply dies (and thus does not get 11node's Failover Wan IP), resulting in a situation where none of the nodes have 10node's failover IP because 10node is down 11node has "given back" his failover Wan IP. Here's the current configuration I'm working on. node 10sch \ attributes standby="off" node 11sch \ attributes standby="off" primitive LanCluster100 ocf:heartbeat:IPaddr2 \ params ip="172.25.0.100" cidr_netmask="32" nic="eth3" \ op monitor interval="10s" \ meta is-managed="true" target-role="Started" primitive LanCluster101 ocf:heartbeat:IPaddr2 \ params ip="172.25.0.101" cidr_netmask="32" nic="eth3" \ op monitor interval="10s" \ meta is-managed="true" target-role="Started" primitive Ping100 ocf:pacemaker:ping \ params host_list="192.0.2.1" multiplier="500" dampen="15s" \ op monitor interval="5s" \ meta target-role="Started" primitive Ping101 ocf:pacemaker:ping \ params host_list="192.0.2.1" multiplier="500" dampen="15s" \ op monitor interval="5s" \ meta target-role="Started" primitive WanCluster100 ocf:heartbeat:IPaddr2 \ params ip="192.0.2.100" cidr_netmask="32" nic="eth2" \ op monitor interval="10s" \ meta target-role="Started" primitive WanCluster101 ocf:heartbeat:IPaddr2 \ params ip="192.0.2.101" cidr_netmask="32" nic="eth2" \ op monitor interval="10s" \ meta target-role="Started" primitive Website0 ocf:heartbeat:apache \ params configfile="/etc/apache2/apache2.conf" options="-DSSL" \ operations $id="Website-one" \ op start interval="0" timeout="40" \ op stop interval="0" timeout="60" \ op monitor interval="10" timeout="120" start-delay="0" statusurl="http://127.0.0.1/server-status/" \ meta target-role="Started" primitive Website1 ocf:heartbeat:apache \ params configfile="/etc/apache2/apache2.conf.1" options="-DSSL" \ operations $id="Website-two" \ op start interval="0" timeout="40" \ op stop interval="0" timeout="60" \ op monitor interval="10" timeout="120" start-delay="0" statusurl="http://127.0.0.1/server-status/" \ meta target-role="Started" group All100 WanCluster100 LanCluster100 group All101 WanCluster101 LanCluster101 location AlwaysPing100WithNode10 Ping100 \ rule $id="AlWaysPing100WithNode10-rule" inf: #uname eq 10sch location AlwaysPing101WithNode11 Ping101 \ rule $id="AlWaysPing101WithNode11-rule" inf: #uname eq 11sch location NeverLan100WithNode11 LanCluster100 \ rule $id="RAND1083308" -inf: #uname eq 11sch location NeverPing100WithNode11 Ping100 \ rule $id="NeverPing100WithNode11-rule" -inf: #uname eq 11sch location NeverPing101WithNode10 Ping101 \ rule $id="NeverPing101WithNode10-rule" -inf: #uname eq 10sch location Website0NeedsConnectivity Website0 \ rule $id="Website0NeedsConnectivity-rule" -inf: not_defined pingd or pingd lte 0 location Website1NeedsConnectivity Website1 \ rule $id="Website1NeedsConnectivity-rule" -inf: not_defined pingd or pingd lte 0 colocation Never -inf: LanCluster101 LanCluster100 colocation Never2 -inf: WanCluster100 LanCluster101 colocation NeverBothWebsitesTogether -inf: Website0 Website1 property $id="cib-bootstrap-options" \ dc-version="1.1.7-ee0730e13d124c3d58f00016c3376a1de5323cff" \ cluster-infrastructure="openais" \ expected-quorum-votes="2" \ no-quorum-policy="ignore" \ stonith-enabled="false" \ last-lrm-refresh="1408954702" \ maintenance-mode="false" rsc_defaults $id="rsc-options" \ resource-stickiness="100" \ migration-threshold="3" I also have a less important question concerning this line: colocation NeverBothLans -inf: LanCluster101 LanCluster100 How do I tell it that this collocation only applies to '11node'.

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• iSCSI SAN RAID 10 Performance -- Poor Read, Good Write

  - by Litzner

  I have a EqualLogic PS4000 SAN unit with the latest firmware, setup in RAID 10. I have 3 2TB Volumes on the SAN shared out via iSCSI on 2 eth ports on two different subnets. I have moved a test server over to this newly setup SAN, and my testing is showing me a problem. I am getting dismal read performance in everything except a test with 32 queue depth (see attach image) Write performance seems to be right about where it should be. I have tried MPIO on and off, on was slightly better but not much.

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• JVM process resident set size "equals" max heap size, not current heap size

  - by Volune

  After a few reading about jvm memory (here, here, here, others I forgot...), I am expecting the resident set size of my java process to be roughly equal to the current heap space capacity. That's not what the numbers are saying, it seems to be roughly equal to the max heap space capacity: Resident set size: # echo 0 $(cat /proc/1/smaps | grep Rss | awk '{print $2}' | sed 's#^#+#') | bc 11507912 # ps -C java -O rss | gawk '{ count ++; sum += $2 }; END {count --; print "Number of processes =",count; print "Memory usage per process =",sum/1024/count, "MB"; print "Total memory usage =", sum/1024, "MB" ;};' Number of processes = 1 Memory usage per process = 11237.8 MB Total memory usage = 11237.8 MB Java heap # jmap -heap 1 Attaching to process ID 1, please wait... Debugger attached successfully. Server compiler detected. JVM version is 24.55-b03 using thread-local object allocation. Garbage-First (G1) GC with 18 thread(s) Heap Configuration: MinHeapFreeRatio = 10 MaxHeapFreeRatio = 20 MaxHeapSize = 10737418240 (10240.0MB) NewSize = 1363144 (1.2999954223632812MB) MaxNewSize = 17592186044415 MB OldSize = 5452592 (5.1999969482421875MB) NewRatio = 2 SurvivorRatio = 8 PermSize = 20971520 (20.0MB) MaxPermSize = 85983232 (82.0MB) G1HeapRegionSize = 2097152 (2.0MB) Heap Usage: G1 Heap: regions = 2560 capacity = 5368709120 (5120.0MB) used = 1672045416 (1594.586769104004MB) free = 3696663704 (3525.413230895996MB) 31.144272834062576% used G1 Young Generation: Eden Space: regions = 627 capacity = 3279945728 (3128.0MB) used = 1314914304 (1254.0MB) free = 1965031424 (1874.0MB) 40.089514066496164% used Survivor Space: regions = 49 capacity = 102760448 (98.0MB) used = 102760448 (98.0MB) free = 0 (0.0MB) 100.0% used G1 Old Generation: regions = 147 capacity = 1986002944 (1894.0MB) used = 252273512 (240.5867691040039MB) free = 1733729432 (1653.413230895996MB) 12.702574926293766% used Perm Generation: capacity = 39845888 (38.0MB) used = 38884120 (37.082786560058594MB) free = 961768 (0.9172134399414062MB) 97.58628042120682% used 14654 interned Strings occupying 2188928 bytes. Are my expectations wrong? What should I expect? I need the heap space to be able to grow during spikes (to avoid very slow Full GC), but I would like to have the resident set size as low as possible the rest of the time, to benefit the other processes running on the server. Is there a better way to achieve that? Linux 3.13.0-32-generic x86_64 java version "1.7.0_55" Running in Docker version 1.1.2 Java is running elasticsearch 1.2.0: /usr/bin/java -Xms5g -Xmx10g -XX:MinHeapFreeRatio=10 -XX:MaxHeapFreeRatio=20 -Xss256k -Djava.awt.headless=true -XX:+UseG1GC -XX:MaxGCPauseMillis=350 -XX:InitiatingHeapOccupancyPercent=45 -XX:+AggressiveOpts -XX:+UseCompressedOops -XX:-OmitStackTraceInFastThrow -XX:+PrintGCDetails -XX:+PrintGCTimeStamps -XX:+PrintClassHistogram -XX:+PrintTenuringDistribution -XX:+PrintGCApplicationStoppedTime -XX:+PrintGCApplicationConcurrentTime -Xloggc:/opt/elasticsearch/logs/gc.log -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/opt elasticsearch/logs/heapdump.hprof -XX:ErrorFile=/opt/elasticsearch/logs/hs_err.log -Des.logger.port=99999 -Des.logger.host=999.999.999.999 -Delasticsearch -Des.foreground=yes -Des.path.home=/opt/elasticsearch -cp :/opt/elasticsearch/lib/elasticsearch-1.2.0.jar:/opt/elasticsearch/lib/*:/opt/elasticsearch/lib/sigar/* org.elasticsearch.bootstrap.Elasticsearch There actually are 5 elasticsearch nodes, each in a different docker container. All have about the same memory usage. Some stats about the index: size: 9.71Gi (19.4Gi) docs: 3,925,398 (4,052,694)

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• Unable to mount iso as dvd drive in VMware Fusion 6

  - by John O

  I have a newer iMac without an optical drive and some DVDs that I needed to run software off of. This software will have you juggle discs to read data off of them, and the data can't simply be copied to the machine's drive. I used a windows machine to make ISOs of these DVDs. And the first disc, the installer, it will mount in VMware and let you install the software. It then asks for the other discs, and these won't mount as ISOs. If I mount them as drive images, they'll show up on the iMac's and I have access to all the files. But if I try to mount them as the dvd drive through Fusion, nothing happens. For that matter, I'm unable to attempt it a second time, as Fusion believes that the there is already an iso mounted as the dvd, while nothing has happened as far as the guest OS is concerned. drutil eject will allow me to eject the ghost/non-existent dvd, at which point I can make a second (equally futile) attempt. Does anyone have an explanation for this behavior? How can the ISO be valid enough to mount as a drive image, but not valid enough for Fusion to mount it as if it were a dvd?

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• Multiple cable adapter setup not working - VGA to smartphone. All cables tested and work

  - by Christopher Rucinski

  Issue Pictured overhead projector setup does not work. #1 - #2 - #3 - Phone. All cables are tested and work! The issue is the HDMI connection between cable #2 and #3. With all other cables, the screen will automatically be displayed onto the projector screen. No extra work needed. With the pictured setup, the smartphone screen is not displayed onto the projector screen. What is the issue with the HDMI connection?? Background We recently had to do presentations at work (school), but the administration only provided VGA means of hooking up to it. Mostly likely reason probably dealt with cost. Anyways, there are several teachers that have brand new Samsung Series 9 ultrabooks (or similar). You know, the ones without VGA support. So I bought an adapter for those ultrabooks. Cable #5 in the picture below. However, both my coworker and I have been wanting to just display our phone screens on the projector. This I knew would require some extra work. What I have VGA cable to projector (cables go through the wall) For laptops HDMI to VGA cable For laptops MHL adapter For 11-pin microUSB phones microHDMI to VGA cable For ultrabooks 11-pin to 5-pin microUSB adapter For older 5-pin microUSB phones) Equipment Projectors 1 projector with VGA and HDMI input (issue is coworkers forget to switch sources) 1 projector with VGA only input Laptops 2 new Samsung ultrabooks w/o VGA or HDMI support 1 ultrabook with VGA and HDMI support several other laptops with at least VGA support 1 tablet with 11-pin microUSB at least 1 new phone with 11-pin microUSB at least 1 old phone with 5-pin microUSB Tested VGA cable (#1) to laptop Good VGA cable (#1) to HDMI adapter (#2) to laptop Good VGA cable (#1) to microHDMI adapter (#5) to laptop Good Projector to HDMI cable (not shown) to MHL adapter (#3) to Galaxy Note 3 smartphone Good VGA cable (#1) to HDMI adapter (#2) to MHL adapter (#3) to Galaxy Note 3 smartphone Does not work!! Extra Notes The 11-pin MHL adapter will not fit inside the 11-pin to 5-pin microUSB adapter so older phones can be displayed on the screen.

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