[Bug 746508] Re: apt-check uses too much resources (starts too many processes)
After updating the Ubuntu servers I maintain on the 30 of September I'm having this problem too. However only on one of the servers which is currently running Ubuntu 14.04.5 LTS (3.13.0-96-generic #143-Ubuntu SMP Mon Aug 29 20:15:20 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux). If I run apt-check manually with the following command: # /usr/lib/update-notifier/apt-check --human-readable 0 packages can be updated. 0 updates are security updates. It outputs quite quickly but running apt-get update tends to cause multiple processes of 'apt-check --human-readable' and causes high load. top shows the following: ## top - 11:00:03 up 11 days, 10:28, 1 user, load average: 28.85, 16.79, 7.03 Tasks: 279 total, 9 running, 266 sleeping, 0 stopped, 4 zombie %Cpu(s): 20.5 us, 7.7 sy, 0.1 ni, 70.5 id, 1.1 wa, 0.0 hi, 0.1 si, 0.0 st KiB Mem: 1013868 total, 943524 used,70344 free, 664 buffers KiB Swap: 1046524 total,58400 used, 988124 free. 505288 cached Mem PID USER PR NIVIRTRESSHR S %CPU %MEM TIME+ COMMAND 15494 root 39 19 121672 34420 21224 D 4.5 3.4 0:03.18 apt-check 15650 root 39 19 121672 34260 21060 R 4.5 3.4 0:03.21 apt-check 16038 root 39 19 121676 34744 21532 D 4.5 3.4 0:03.22 apt-check 16144 root 39 19 121676 35260 22052 D 4.5 3.5 0:03.17 apt-check 16642 root 39 19 103884 28516 19756 D 4.5 2.8 0:02.48 apt-check htop shows mostly the same but with instead of apt-check gives more info about the command: '/usr/bin/python /usr/lib/update-notifier/apt-check --human-readable' The server also shows more average load across the board in vSphere. CPU% has increase from normally 6% to average of 33%. However I'm not sure if this is related. Also found a tread on serverfault with the same issue: http://serverfault.com/questions/471089/prevent-apt-check-from-eating- all-my-memory -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/746508 Title: apt-check uses too much resources (starts too many processes) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/update-notifier/+bug/746508/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 746508] Re: apt-check uses too much resources (starts too many processes)
For kubuntu, this is related to package plasma-discover-updater This issue seems to be resolved upstream: https://bugs.kde.org/show_bug.cgi?id=358359 ** Bug watch added: KDE Bug Tracking System #358359 https://bugs.kde.org/show_bug.cgi?id=358359 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/746508 Title: apt-check uses too much resources (starts too many processes) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/update-notifier/+bug/746508/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 746508] Re: apt-check uses too much resources (starts too many processes)
Can confirm this happens on "apt-get update" command on Kubuntu 16.04. If I have more processes open when I try to run this it makes my computer unresponsive, not only because the processor is at 100% which is bad enough, but because it will start digging into swap, and I have 16GB of RAM. Terrible bug indeed! Interestingly enough if I run "apt-get install update-notifier" it would appear as if it where not installed so it's all the more frustrating. For those that have problems with their computer being unusable from time to time there is a file in cron.daily and cron.weekly that starts this process automatically which you can comment out. Or if you want to disable it completely you can just: mv /usr/lib/update-notifier/apt-check /usr/lib/update-notifier/apt-check.disabled touch apt-check chmod 777 $_ I'm not really sure what the above would break but it's better than having the system unusable in my opinion. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/746508 Title: apt-check uses too much resources (starts too many processes) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/update-notifier/+bug/746508/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 746508] Re: apt-check uses too much resources (starts too many processes)
A mi me pasa lo mismo. Después de un apt-get update tengo que esperar durante mucho tiempo para que mi ordenador reaccione. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/746508 Title: apt-check uses too much resources (starts too many processes) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/update-notifier/+bug/746508/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 746508] Re: apt-check uses too much resources (starts too many processes)
The same happens to me. After an apt-get update I have to wait long for my computer to react. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/746508 Title: apt-check uses too much resources (starts too many processes) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/update-notifier/+bug/746508/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 746508] Re: apt-check uses too much resources (starts too many processes)
To be clear, this bug causes the Wily machine to hard-crash with 100% CPU and 100% memory usage, forcing a hard reboot. Can't log in at console to restart, can't even get to a console to run killall. So every few days the system becomes a paper-weight and has to be converted back into a computer by human interaction... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/746508 Title: apt-check uses too much resources (starts too many processes) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/update-notifier/+bug/746508/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 746508] Re: apt-check uses too much resources (starts too many processes)
The same is in Wily. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/746508 Title: apt-check uses too much resources (starts too many processes) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/update-notifier/+bug/746508/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 746508] Re: apt-check uses too much resources (starts too many processes)
Loading updates from different remote hosts in parallel is useful, but it looks like there needs to be a way to switch it off. In `man apt.conf` I see: Queue-Mode Queuing mode; Queue-Mode can be one of host or access which determines how APT parallelizes outgoing connections. host means that one connection per target host will be opened, access means that one connection per URI type will be opened. Seems to me that perhaps another mode is warranted where the connections are serialised. Alternatively, perhaps a limit on the number of parallel connections in total. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/746508 Title: apt-check uses too much resources (starts too many processes) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/update-notifier/+bug/746508/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 746508] Re: apt-check uses too much resources (starts too many processes)
Status changed to 'Confirmed' because the bug affects multiple users. ** Changed in: update-notifier (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/746508 Title: apt-check uses too much resources (starts too many processes) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/update-notifier/+bug/746508/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 746508] Re: apt-check uses too much resources (starts too many processes)
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/746508 Title: apt-check uses too much resources (starts too many processes) -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
