The patch does not work for us. We tried out the below test: root@ubuntu1504:~# cat /etc/issue Ubuntu Vivid Vervet (development branch) \n \l root@ubuntu1504:~# cgmanager --version cgmanager 0.36 root@ubuntu1504:~# uname -a Linux ubuntu1504 3.18.0-13-generic #14-Ubuntu SMP Fri Feb 6 09:57:41 UTC 2015 ppc64le ppc64le ppc64le GNU/Linux root@ubuntu1504:~# root@ubuntu1504:/sys/devices/system/cpu# ps aux | grep bash root 955 0.2 0.3 8576 7104 hvc0 S 01:52 0:00 -bash root 1001 0.0 0.1 4992 3072 hvc0 S+ 01:53 0:00 grep --color=auto bash root@ubuntu1504:/sys/devices/system/cpu# taskset -p 955 pid 955's current affinity mask: ffff root@ubuntu1504:/sys/devices/system/cpu# echo 0 > cpu15/online root@ubuntu1504:/sys/devices/system/cpu# taskset -p 955 pid 955's current affinity mask: 7fff root@ubuntu1504:/sys/devices/system/cpu# echo 1 > cpu15/online root@ubuntu1504:/sys/devices/system/cpu# taskset -p 955 pid 955's current affinity mask: 7fff
You can see that the cpumask of the task does not have the cpu that we got back online and we are using the version of cgmanager that has the fix in. Can you explain what the patch does ? This will help us figure out why its not working. On another note, to make things clearer, there are two requirements to take care of: a. When a cpu goes offline and comes back online, the cpuset of tasks must get updated both times to reflect the online mask b. When a cpu in the possible_mask is brought online anytime after bootup, that too should get updated in the cpuset of the tasks. Regards Preeti U Murthy -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1392176 Title: mounts cgroups unconditionally which causes undesired effects with cpu hotplug To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cgmanager/+bug/1392176/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
