[Bug 745108] Re: EC2 instance CPU goes to 100% and locks
Closing this bug with Won't fix as this kernel / release is no longer supported. Please feel free to open a new bug report if you're still experiencing this on a newer release (Bionic 18.04.3 / Disco 19.04) Thanks! ** Changed in: linux (Ubuntu) Status: Confirmed => Won't Fix -- 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/745108/+subscriptions -- 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
** Tags added: hardy ** Changed in: linux (Ubuntu) Status: New => Confirmed ** Changed in: linux (Ubuntu) Importance: Undecided => Medium -- 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
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] 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
