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Articles indexed Saturday June 23 2012

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  • Using Oracle hint "FIRST_ROWS" to improve Oracle database performances

    - by bobetko
    I have a statement that runs on Oracle database server. The statement has about 5 joins and there is nothing unusual there. It looks pretty much like below: SELECT field1, field2, field3, ... FROM table1, table2, table3, table4, table5 WHERE table1.id = table2.id AND table2.id = table3.id AND ... table5.userid = 1 The problem (and what is interesting) is that statement for userid = 1 takes 1 second to return 590 records. Statement for userid = 2 takes around 30 seconds to return 70 records. I don't understand why is difference so big. It seems that different execution plan is chosen for statement with userid = 1 and different for userid = 2. After I implemented Oracle Hint FIRST_ROW, performance become significantly better. Both statements (for both ids 1 and 2) produce return in under 1 second. SELECT /*+ FIRST_ROWS */ field1, field2, field3, ... FROM table1, table2, table3, table4, table5 WHERE table1.id = table2.id AND table2.id = table3.id AND ... table5.userid = 1 Questions: 1) What are possible reasons for bad performance when userid = 2 (when hint is not used)? 2) Why would execution plan be different for one vs another statement (when hint is not used)? 3) Is there anything that I should be careful about when deciding to add this hint to my queries? Thanks

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  • Dartisans Ep. 6 - Meet the community - Dart hangout

    Dartisans Ep. 6 - Meet the community - Dart hangout In this episode of Dartisans, we are joined by special guests from the Dart community. John Evans, Adam Smith, Chris Buckett, John McCutchan, and Lars Tackmann talk about their Dart libraries, what they like about Dart, and what they want to see in the future. Get started with Dart at www.dartlang.org From: GoogleDevelopers Views: 4 0 ratings Time: 48:11 More in Science & Technology

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  • Code is not the best way to draw

    - by Bertrand Le Roy
    It should be quite obvious: drawing requires constant visual feedback. Why is it then that we still draw with code in so many situations? Of course it’s because the low-level APIs always come first, and design tools are built after and on top of those. Existing design tools also don’t typically include complex UI elements such as buttons. When we launched our Touch Display module for Netduino Go!, we naturally built APIs that made it easy to draw on the screen from code, but very soon, we felt the limitations and tedium of drawing in code. In particular, any modification requires a modification of the code, followed by compilation and deployment. When trying to set-up buttons at pixel precision, the process is not optimal. On the other hand, code is irreplaceable as a way to automate repetitive tasks. While tools like Illustrator have ways to repeat graphical elements, they do so in a way that is a little alien and counter-intuitive to my developer mind. From these reflections, I knew that I wanted a design tool that would be structurally code-centric but that would still enable immediate feedback and mouse adjustments. While thinking about the best way to achieve this goal, I saw this fantastic video by Bret Victor: The key to the magic in all these demos is permanent execution of the code being edited. Whenever a parameter is being modified, everything is re-executed immediately so that the impact of the modification is instantaneously visible. If you do this all the time, the code and the result of its execution fuse in the mind of the user into dual representations of a single object. All mental barriers disappear. It’s like magic. The tool I built, Nutshell, is just another implementation of this principle. It manipulates a list of graphical operations on the screen. Each operation has a nice editor, and translates into a bit of code. Any modification to the parameters of the operation will modify the bit of generated code and trigger a re-execution of the whole program. This happens so fast that it feels like the drawing reacts instantaneously to all changes. The order of the operations is also the order in which the code gets executed. So if you want to bring objects to the front, move them down in the list, and up if you want to move them to the back: But where it gets really fun is when you start applying code constructs such as loops to the design tool. The elements that you put inside of a loop can use the loop counter in expressions, enabling crazy scenarios while retaining the real-time edition features. When you’re done building, you can just deploy the code to the device and see it run in its native environment: This works thanks to two code generators. The first code generator is building JavaScript that is executed in the browser to build the canvas view in the web page hosting the tool. The second code generator is building the C# code that will run on the Netduino Go! microcontroller and that will drive the display module. The possibilities are fascinating, even if you don’t care about driving small touch screens from microcontrollers: it is now possible, within a reasonable budget, to build specialized design tools for very vertical applications. Direct feedback is a powerful ally in many domains. Code generation driven by visual designers has become more approachable than ever thanks to extraordinary JavaScript libraries and to the powerful development platform that modern browsers provide. I encourage you to tinker with Nutshell and let it open your eyes to new possibilities that you may not have considered before. It’s open source. And of course, my company, Nwazet, can help you develop your own custom browser-based direct feedback design tools. This is real visual programming…

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  • Microsoft Cloud Day - the ups and downs

    - by Charles Young
    The term ‘cloud’ can sometimes obscure the obvious.  Today’s Microsoft Cloud Day conference in London provided a good example.  Scott Guthrie was halfway through what was an excellent keynote when he lost network connectivity.  This proved very disruptive to his presentation which centred on a series of demonstrations of the Azure platform in action.  Great efforts were made to find a solution, but no quick fix presented itself.  The venue’s IT facilities were dreadful – no WiFi, poor 3G reception (forget 4G…this is the UK) and, unbelievably, no-one on hand from the venue staff to help with infrastructure issues.  Eventually, after an unscheduled break, a solution was found and Scott managed to complete his demonstrations.  Further connectivity issues occurred during the day. I can say that the cause was prosaic.  A member of the venue staff had interfered with a patch board and inadvertently disconnected Scott Guthrie’s machine from the network by pulling out a cable. I need to state the obvious here.  If your PC is disconnected from the network it can’t communicate with other systems.  This could include a machine under someone’s desk, a mail server located down the hall, a server in the local data centre, an Internet search engine or even, heaven forbid, a role running on Azure. Inadvertently disconnecting a PC from the network does not imply a fundamental problem with the cloud or any specific cloud platform.  Some of the tweeted comments I’ve seen today are analogous to suggesting that, if you accidently unplug your microwave from the mains, this suggests some fundamental flaw with the electricity supply to your house.   This is poor reasoning, to say the least. As far as the conference was concerned, the connectivity issue in the keynote, coupled with some later problems in a couple of presentations, served to exaggerate the perception of poor organisation.   Software problems encountered before the conference prevented the correct set-up of a smartphone app intended to convey agenda information to attendees.  Although some information was available via this app, the organisers decided to print out an agenda at the last moment.  Unfortunately, the agenda sheet did not convey enough information, and attendees were forced to approach conference staff through the day to clarify locations of the various presentations. Despite these problems, the overwhelming feedback from conference attendees was very positive.  There was a real sense of excitement in the morning keynote.  For many, this was their first sight of new Azure features delivered in the ‘spring’ release.  The most common reaction I heard was amazement and appreciation that Azure’s new IaaS features deliver built-in template support for several flavours of Linux from day one.  This coupled with open source SDKs and several presentations on Azure’s support for Java, node.js, PHP, MongoDB and Hadoop served to communicate that the Azure platform is maturing quickly.  The new virtual network capabilities also surprised many attendees, and the much improved portal experience went down very well. So, despite some very irritating and disruptive problems, the event served its purpose well, communicating the breadth and depth of the newly upgraded Azure platform.  I enjoyed the day very much.

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  • Virtualising Windows 8 on OS X with VMware Fusion above the 8GB limit

    - by mbrit
    tl;dr - don't.VMware Fusion has an 8GB limit, so on my 16GB MacBook Pro (which is an old one with a 16GB memory upgrade), I wanted to use more than 8GB. You can fudge it my editing the .vmx file and changing the memsize value to whatever you want.However it turns out that if you do this the performance on the whole machine turns into a big. It beachballs all over the place, both in VMware and without. Constant hanging of VMware, fan running hot the whole time, etc.This is just an apocryphal view, but having spent a week and a half with it unusable and me thinking I was going to have to go back to Win7, turn it down back to using 8GB exactly seems to be working much more stably.

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  • Can /etc/hosts.deny/allow be overridden?

    - by Tar
    I have security measures put in place to keep unwanted users out of my server. I've changed the SSH port, disabled root login, have a software firewall to block portscans, and have entries in hosts.deny and hosts.allow. I have various services denied to all but another server of mine should my IP change, and two other administrators + my own IP address. My question is, can hosts.deny/allow configuration be overridden so that they can gain access to my server? Does using chroot jail for running things like an IRC server and Teamspeak server prevent people from gaining access to my server and screwing with it?

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  • After Switching from Apache to Nginx, HTML Truncated

    - by Ben Buras
    Our site was running fine with Apache, but I am switching us over to Nginx (with php-fastcgi) to be more scalable. Everything is working fine except our HTML gets truncated sometimes (usually on large pages). Live server running Apache: http://bros4bros.com/index.php?action=browse_members&members_page=50 (WARNING: half naked guys!) New server running Nginx: http://50.56.238.208/index.php?action=browse_members&members_page=50 I have tried modifying these settings with no avail: max_execution_time fastcgi_send_timeout

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  • Create Webmin user for an EC2 Instance

    - by Dean
    I've setup an Amazon EC2 Instance, using the Ubuntu 12.04 AMI (ubuntu/images/ebs/ubuntu-precise-12.04-amd64-server-20120424 (ami-a29943cb)), and I'd like to get Webmin working (so I can setup a DNS). After following the installation instructions on Webmin's site, the installer says I can login with any username/pass of a user who has superuser access. The problem is that the EC2 instance only has 1 user "ubuntu", which can only login using SSH keys -- not a password! I've tried creating users manually and I can't login as those users (even via SSH), so I think it might be a permission thing provided by the AMI. Does anyone know the best way around setting up a login to my webmin?

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  • getting warning messages "avahi-daemon[3201]: Invalid query packet." on suse 10.1 server with raid 1

    - by jarus
    I had recently replaced a failing hard drive on my software raid 1 system with suse 10.1 , and i am checking for any warning messages on " var/log/warn " and i found this message "avahi-daemon[3201]: Invalid query packet." more than 12 times , i am new to these stuff , should i be concerned , is there something wrong with the system , can i check anywhere else to find out if there is any problem with the system. Any help will be greatly appreciated. Thanx in advance.

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  • Overriding routes on Openvpn client, iproute, iptables2

    - by sarvavijJana
    I am looking for some way to route packets based on its destination ports switching regular internet connection and established openvpn tunnel. This is my configuration OpenVPN server ( I have no control over it ) OpenVPN client running ubuntu wlan0 192.168.1.111 - internet connected if Several routes applied on connection to openvpn from server: /sbin/route add -net 207.126.92.3 netmask 255.255.255.255 gw 192.168.1.1 /sbin/route add -net 0.0.0.0 netmask 128.0.0.0 gw 5.5.0.1 /sbin/route add -net 128.0.0.0 netmask 128.0.0.0 gw 5.5.0.1 And I need to route packets regarding it's destination ports for ex: 80,443 into vpn everything else directly to isp connection 192.168.1.1 What i have used during my attempts: iptables -A OUTPUT -t mangle -p tcp -m multiport ! --dports 80,443 -j MARK --set-xmark 0x1/0xffffffff ip rule add fwmark 0x1 table 100 ip route add default via 192.168.1.1 table 100 I was trying to apply this settings using up/down options of openvpn client configuration All my attempts reduced to successful packet delivery and response only via vpn tunnel. Packets routed bypassing vpn i have used some SNAT to gain proper src address iptables -A POSTROUTING -t nat -o $IF -p tcp -m multiport --dports 80,443 -j SNAT --to $IF_IP failed in SYN-ACK like 0 0,1 0,1: "70","192.168.1.111","X.X.X.X","TCP","34314 > 81 [SYN] Seq=0 Win=5840 Len=0 MSS=1460 TSV=18664016 TSER=0 WS=7" "71","X.X.X.X","192.168.1.111","TCP","81 > 34314 [SYN, ACK] Seq=0 Ack=1 Win=5792 Len=0 MSS=1428 TSV=531584430 TSER=18654692 WS=5" "72","X.X.X.X","192.168.1.111","TCP","81 > 34314 [SYN, ACK] Seq=0 Ack=1 Win=5792 Len=0 MSS=1428 TSV=531584779 TSER=18654692 WS=5" "73","192.168.1.111","X.X.X.X","TCP","34343 > 81 [SYN] Seq=0 Win=5840 Len=0 MSS=1460 TSV=18673732 TSER=0 WS=7" I hope someone has already overcome such a situation or probably knows better approach to fulfill requirements. Please kindly give me a good advice or working solution.

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  • Juniper EX3300 routing issue

    - by Richard Whitman
    The routing on my Juniper EX3300 does not seem to be working. My ISP's gateway is at xx.xx.xx.xx. And I have the following in the configuration: routing-options { static { route 0.0.0.0/0 { next-hop xx.xx.xx.xx; retain; } } } I can ping to my ISP's gateway from the switch. However, I can NOT ping to any other IP. When I do a traceroute (to Google.com's IP). This is what I get: traceroute to 74.125.224.69 (74.125.224.69), 30 hops max, 40 byte packets traceroute: sendto: No route to host 1 traceroute: wrote 74.125.224.69 40 chars, ret=-1 *traceroute: sendto: No route to host Do I need to enable any protocols? I guess this goes without saying, but I am kind of new to Junos. Update: This is the output from show interfaces terse | match inet: bme0.32768 up up inet 128.0.0.1/2 jsrv.1 up up inet 128.0.0.127/2 vlan.0 up up inet 10.0.1.1/24 vlan.1 up up inet xx.xx.xx.110/30 and this is the output from: show route forwarding-table: Routing table: default.inet Internet: Destination Type RtRef Next hop Type Index NhRef Netif default perm 0 rjct 36 1 0.0.0.0/32 perm 0 dscd 34 1 10.0.1.0/24 intf 0 rslv 1321 1 vlan.0 10.0.1.0/32 dest 0 10.0.1.0 recv 1319 1 vlan.0 10.0.1.1/32 intf 0 10.0.1.1 locl 1320 2 10.0.1.1/32 dest 0 10.0.1.1 locl 1320 2 10.0.1.3/32 dest 1 0:25:90:63:26:53 ucst 1331 2 vlan.0 10.0.1.255/32 dest 0 10.0.1.255 bcst 1318 1 vlan.0

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  • ISAPI filter with LDAP over SSL only works as administrator

    - by Zac
    I have created an ISAPI filter for IIS 6.0 that tries to authenticate against Active directory using LDAP. The filter works fine when authenticating regularly over port 389, but when I try to use SSL, I always get the 0x51 Server Down error at the ldap_connect() call. Even skipping the connect call and using ldap_simple_bind_s() results in the same error. The weird thing is that if I change the app pool identity to the local admin account, then the filter works fine and LDAP over SSL is successful. I created an exe with the same code below and ran it on the server as admin and it works. Using the default NETWORK SERVICE identity for the site's app pool is what seems to be the problem. Any thoughts as to what is happening? I want to use the default identity since I don't want the website to have elevated admin privileges. The server is in a DMZ outside the network and domain where our DCs are that run AD. We have a valid certificate on our DCs for AD as well. Code: // Initialize LDAP connection LDAP * ldap = ldap_sslinit(servers, LDAP_SSL_PORT, 1); ULONG version = LDAP_VERSION3; if (ldap == NULL) { strcpy(error_msg, ldap_err2string(LdapGetLastError())); valid_user = false; } else { // Set LDAP options ldap_set_option(ldap, LDAP_OPT_PROTOCOL_VERSION, (void *) &version); ldap_set_option(ldap, LDAP_OPT_SSL, LDAP_OPT_ON); // Make the connection ldap_response = ldap_connect(ldap, NULL); // <-- Error occurs here! // Bind and continue... } UPDATE: I created a new user without admin privileges and ran the test exe as the new user and I got the same Server Down error. I added the user to the Administrators group and got the same error as well. The only user that seems to work with LDAP over SSL authentication on this particular server is administrator. The web server with the ISAPI filter (and where I've been running the test exe) is running Windows Server 2003. The DCs with AD on them are running 2008 R2. Also worth mentioning, we have a WordPress site on the same server that authenticates against LDAP over SSL using PHP (OpenLDAP) and there's no problem there. I have an ldap.conf file that specifies TLS_REQCERT never and the user running the PHP code is IUSR.

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  • Ultrium 3 tape drive shoe-shining, 3Mb/s: and it's not the cable

    - by mowsala
    I have a HP 960 Ultrium 3 tape drive. Since I got it, (second hand, £90) I've been experiencing shoe-shining. Writing with tar in Linux, I average about 3Mb/s write speed. I've tried replacing both the SCSI card and the cable now, both of which made no difference at all. A curiuos observation I have made is that the write rate is not consistent. Sometimes it will write for over a minute without shoeshining, but more often, just a few seconds. I've also tried several tapes, different source drives, and even writing from Windows Backup, to no avail.

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  • Using the Juniper EX3300 Switch as a router?

    - by Richard Whitman
    I have a Juniper EX3300 switch in a data center. And I have connected one of the uplink ports (ge-0/1/0) to my ISP's router. I want to configure it so that all the devices connected to ports in the same VLAN as ge-0/1/0 can access the Internet. I have done some research, and I haven't gotten anywhere really. I have configured the interface as follows: ge-0/1/0 { ether-options { no-auto-negotiation; link-mode full-duplex; speed { 1g; } } unit 0 { family inet { address xx.xx.xx.xx/32; } } } where xx.xx.xx.xx is the "Customer Router Port IP" assigned by my ISP. When I try to commit, I get the following error: Interface ge-0/1/0.0 not enabled for switching Can some one tell me what is the right way to configure it?

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  • SQL Server: How to shrink FileStream files?

    - by J4N
    For a project, I'm using a SQL Server 2008 R2. One table has a filestream column. I've made some load tests, and now the database has ~20GB used. I've empty tables, except several(configuration tables). But my database was still using a lot of space. So I used the Task -> Shrink -> Database / Files But my database is still using something like 16GB. I found that it's the filestream file is still using a lot of space. The problem is that I need to backup this database to export it on the final production server, and event if I indicate to compress the backup I got a file more than 3.5Go. Not convenient to store and upload. And I'm planning much bigger test, so I want to know how to shrink that empty space. When I'm trying: I get this exception: The properties SIZE, MAXSIZE, or FILEGROWTH cannot be specified for the FILESTREAM data file 'FileStreamFile'. (Microsoft SQL Server, Error: 5509) So what should I do? I found several topics with this error but they was about removing the filestream column.

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  • What causes winsock 10055 errors? How should I troubleshoot?

    - by Tom Kerr
    I'm investigating some issues with winsock 10055 errors on a chain of custom applications (some of which we control, some not) and was hoping to get some advice on techniques to troubleshoot the problem. No buffer space available. An operation on a socket could not be performed because the system lacked sufficient buffer space or because a queue was full. From research, non-paged pool and ports seem to be the only resources which can cause this error. Is there another resource which might cause 10055 errors? Currently, we have perfmon counters setup on the applications and non-paged pool usage looks low in most circumstances. Open TCP connections looks low and I am unaware of another way to monitor ports. Since it only happens in production, we are unable to use more invasive counters. Is there some other tool or procedure you would recommend to diagnose which application is causing the issue?

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  • Installing Munin on Centos 6

    - by justinhj
    I've hit problems installing munin on Centos 6. This seems to be a conflict between parts of Perl. I think the version of Perl is newer on Centos 6 (v5.10.1) When installing munin via yum I get errors relating to perl dependencies as below. I'm not a big enough whiz at yum or rpm to figure out the issue. Munin documentation does not yet talk about installing to Centos 6.0 Error: Package: munin-node-1.4.2-0.rpl1.el5.noarch (/munin-node-1.4.2-0.rpl1.el5.noarch) Requires: perl(Net::SNMP) Error: Package: munin-1.4.2-0.rpl1.el5.noarch (/munin-1.4.2-0.rpl1.el5.noarch) Requires: bitstream-vera-fonts Error: Package: munin-1.4.2-0.rpl1.el5.noarch (/munin-1.4.2-0.rpl1.el5.noarch) Requires: perl(HTML::Template) Error: Package: munin-1.4.2-0.rpl1.el5.noarch (/munin-1.4.2-0.rpl1.el5.noarch) Requires: perl-Net-SNMP Error: Package: munin-common-1.4.2-0.rpl1.el5.noarch (/munin-common-1.4.2-0.rpl1.el5.noarch) Requires: perl(:MODULE_COMPAT_5.8.8) Error: Package: munin-node-1.4.2-0.rpl1.el5.noarch (/munin-node-1.4.2-0.rpl1.el5.noarch) Requires: perl(DBI) Error: Package: munin-1.4.2-0.rpl1.el5.noarch (/munin-1.4.2-0.rpl1.el5.noarch) Requires: perl(Log::Log4perl) Error: Package: munin-node-1.4.2-0.rpl1.el5.noarch (/munin-node-1.4.2-0.rpl1.el5.noarch) Requires: perl(LWP::Simple) Error: Package: munin-node-1.4.2-0.rpl1.el5.noarch (/munin-node-1.4.2-0.rpl1.el5.noarch) Requires: perl(:MODULE_COMPAT_5.8.8) Error: Package: munin-1.4.2-0.rpl1.el5.noarch (/munin-1.4.2-0.rpl1.el5.noarch) Requires: perl(RRDs) Error: Package: munin-node-1.4.2-0.rpl1.el5.noarch (/munin-node-1.4.2-0.rpl1.el5.noarch) Requires: perl-Net-Server Error: Package: munin-1.4.2-0.rpl1.el5.noarch (/munin-1.4.2-0.rpl1.el5.noarch) Requires: perl(Date::Manip) Error: Package: munin-1.4.2-0.rpl1.el5.noarch (/munin-1.4.2-0.rpl1.el5.noarch) Requires: perl(:MODULE_COMPAT_5.8.8) Error: Package: munin-1.4.2-0.rpl1.el5.noarch (/munin-1.4.2-0.rpl1.el5.noarch) Requires: perl-Net-Server Error: Package: munin-1.4.2-0.rpl1.el5.noarch (/munin-1.4.2-0.rpl1.el5.noarch) Requires: perl(CGI::Fast) Error: Package: munin-1.4.2-0.rpl1.el5.noarch (/munin-1.4.2-0.rpl1.el5.noarch) Requires: perl(Time::HiRes)

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  • self-issued exchange certificate for dyndns-url

    - by Sam
    I've got an exchange server behind behind a port to address translation firewall. The server is reachable from the internet using a dyndns-url. Now I want to sync windows phones to exchange mailboxes. To achieve this, I need to install the exchange certificate on the windows phone (send it to the phone by mail, double click). So far so good. But, as far as I can see this does only work if the certificate on my exchange server matches the dyndns-url? So I'd like to know: how do I create a self signed certificate for my dyndns-url and install it on exchange?

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  • High Memory Utilization on weblogic

    - by Anup
    My Weblogic App Server shows high Memory Utization. The application seems to perform good without any memeory issues. Now that my traffix is going to increase i am worried about the memory and have a feeling things could go bad and need to take action now and i am confused as to should i increase The JVM memory on the weblogic instances which means adding more physical memory or should i increase the number of managed instances in the cluster. Would like to understand what does having high memory utilization mean and the advantage and disadvantages of adding JVM memory and adding managed instances. Thanks

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  • How to re-add a missing font

    - by WEFX
    I recently upgraded from Office 2007 to 2010, and that went fairly smoothly. However, afterwards, my Calibri font was gone, so my Word and Outlook started using the next available font in the list... Comic Sans! I browsed to Control Panel Fonts, and saw that there was no longer a Calibri listing. I know that one way to recover a missing font is to just copy the missing font files from another computer. In my case, the four files I needed were: calibri.ttf, //regular calibrib.ttf, //bold calibrii.ttf, //italics calibriz.ttf, //bold and italics However, once I attempted to copy-and-paste these files to my computer, I realized these files were already on my problem computer; they never really got erased. I don't know why they aren't working in Office, and they aren't listed in Control Panel Fonts.

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  • PC version of Google Chrome doesn't recognize ".local" domain name

    - by prosseek
    With Bonjour installed in PC, I can access my server in Mac with ".local". For example, I can access my mac with the name "prosseek.local". The problem is that in Chrome for PC, it doesn't recognize "local" to open search page instead of accessing mac server. This issue isn't happening with other web browsers (explore/firefox) in PC. What is even wierder is that chrome seems to recognize the ".local" sometimes, but not always. How to solve this issue? Or, how can I teach chrome that ".local" is a part of page name in order not to direct to search page?

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  • Her microphone produces white noise, after a while?

    - by Wolfpack'08
    When my friend Skypes with me or gets on FB Video with me, her sound works fine... at first. After a bit, it starts sounding like loud static. It happens more frequently as we restart video chats, until it happens as soon as we open video chats. We usually restart her PC to fix the issue. Is there a process we could kill, maybe? Skip that question, if you will, and jump to these two: How do we fix this? Why is this happening?

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  • How do I sent an "over-sized" video via my Anrdoid?

    - by Wolfpack'08
    When I try to e-mail my 10-minute videos to my gmail account, but when I try to attach the videos the phone gives me this error: 'File is too large and cannot be attached'. Can't reproduce because my Android is hooked up to USB, but I'll edit-- S3x-- What's any convenient way to upload/send a video without having to get out the USB? Can I do it without using any 3rd-party apps, or at least using safe 3rd-party apps? Youtube is an option, I believe, but I want to have a hard copy on my PC for editing. Attachments are more convenient.

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  • I/O APIC on Virtualbox

    - by RidDeBakTiYar
    I'm trying to use the PIT to do APIC timer calibration, and I want to use the PIT through I/O APIC instead of PIC. On Bochs I get interrupts from the PIT at the asked frequency from the I/O APIC, while on Virtualbox I can't receive a single interrupt. It must be an I/O APIC configuration problem because as I unmask the first PIC entry, the IRQ fires. However that's not what I want. Can you imagine any possible condition that wouldn't make Virtualbox fire the IRQ? I'm not assuming single I/O APIC configuration (even though Virtualbox has only 1). I'm not assuming identity mappings between ISA IRQs and I/O APIC GSIs (using ACPI MADT table to get I/O APIC base address and Int override). I'm setting the Trigger Mode and Polarity bits correctly (on Virtualbox they are set as '00 - default' which means edge high right?). I'm putting the BSP APIC ID into the Destination field (using Physical destination) and vector 0x20. Being the BSP APIC ID 0 on Virtualbox, it ends up with 0x0000000000000020 written to the IOREDTBL. And, just in case I'm getting the wrong values from the Interrupt Override descriptor, I'm setting this value to all the IOREDTBL entries (I know this is very very bad, and it wont be kept as I understand what's going on). The only thing I didn't check out is Local APIC configuration. Actually I'm not writing any value to the BSP LAPIC. Just reading the APIC ID and using it to boot APs through IPIs. And obviously I'm setting bit 11 in the IA32_APIC_BASE MSR to enable the LAPIC. Any ideas? Thanks in advance.

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  • missing bootmanager after win7 installation from external hdd

    - by Alex
    today i tried to install win7 from an external hdd to my system. i tried this tut http://www.pcworld.com/article/165159/install_windows_7_from_an_external_hard_drive.html and everything went fine till i pluged off the external hdd. after i pluged it off and tried to restart the system i get a missing boot manager error. if i plug the external hdd in again it's all working fine again. i've searched for the last 2h and didn't find a good answer. did any of you have one ? regards Alex ps: i already tried any forms of reperation and the system is installed on the correct hdd.

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