[Bug 745108] Re: EC2 instance CPU goes to 100% and locks
In 'top', when the server starts, the memory shows... Mem: 1781972k total, 368760k used, The 'used' memory slowly climbs till it reaches the 'total'. It is at this point that the cpu goes to 100% and the instance becomes unresponsive. S Moser pointed out that this isn't an actual reading of memory availablity and directed me to 'free' I used 'free' refreshing at 3 second intervals and on the last record before it locked up it showed total used free sharedbuffers cached Mem: 1740 1465275 0369729 -/+ buffers/cache:366 1374 Swap: 895 0895 So there was plenty of 'available' memory at that point. It seems to me though that while only a small portion of memory is actually in use the system is unable to allocate the 'used' memory back when it's needed? As a test I launched a 64 bit version from ami-a0b993d4 (instance-store, eu-west-1 official Ubuntu 8.04 LTS Hardy) on an m1.large. Installed the same packages, attached the EBS volume with the same PHP based website etc. It has now been up 24hrs without an issue. Not sure if this contributes anything as it's a different ami (with presumably different 64 bit versions of the packages) but I think it eliminates anything in our PHP code -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/745108 Title: EC2 instance CPU goes to 100% and locks -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 745108] [NEW] EC2 instance CPU goes to 100% and locks
Public bug reported: I launch an 32 bit, instance-store, c1.medium server in eu-west-1 based from the official Ubuntu 8.04 LTS Hardy ami-beb993ca and install the following packages with apt-get... apache2 php5 php5-mysql php5-curl php5-cli imagemagick vsftpd xfsprogs postfix ...and also make sure all software is up to date with apt-get update && sudo apt-get upgrade Then attach a 10GB EBS volume and use that to store the apache files for a PHP based website. I redirect my web traffic to this instance and it uses around 40-50% CPU and outgoing bandwidth is around 5Mbps The instance runs fine for a few hours (varies from 2 to 4 hours in tests) before the CPU suddenly climbs to 100% and the instance becomes unresponsive. Rebooting it via the Amazon Management Console fixes everything for another few hours. The output of uname -a is... Linux ip-10-235-21-236 2.6.24-10-xen #1 SMP Tue Sep 8 19:06:53 UTC 2009 i686 GNU/Linux Attached is the output of ec2-get-console-output of the locked instance just after it was rebooted ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: ec2-images -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/745108 Title: EC2 instance CPU goes to 100% and locks -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 745108] Re: EC2 instance CPU goes to 100% and locks
** Attachment added: "console-output" https://bugs.launchpad.net/bugs/745108/+attachment/1953998/+files/console-output -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/745108 Title: EC2 instance CPU goes to 100% and locks -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 634487] Re: t1.micro instance hangs when installing sun java
I believe you can install java fine on a t1.micro x86_64 this bug only affects the 32 bit version -- t1.micro instance hangs when installing sun java https://bugs.launchpad.net/bugs/634487 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
