------- Comment From balb...@au1.ibm.com 2016-07-01 02:36 EDT------- What is the criteria for forward progress of the stress?
I did a quick check for what processes are OOM'd In new kernel 2 apport 1 cron 1 dhclient 1 gmain 2 in:imklog 1 (journald) 1 kworker/u160:4 1 rs:main 1 stress-ng 972 stress-ng-bighe 157 stress-ng-brk 10 swapper/1 2 swapper/16 17 swapper/2 39 swapper/40 15 swapper/41 1 swapper/65 3 systemd 3 systemd-cgroups 10 systemd-journal 1 systemd-logind In the 14.04 kernel 1 dhclient 1 in:imklog 1 in:imuxsock 3 irqbalance 1 jbd2/sda2-8 1 kworker/u160:1 1 stress-ng 226 stress-ng-brk 32 swapper/16 3 swapper/23 2 swapper/31 3 swapper/32 22 swapper/46 5 swapper/55 33 swapper/56 3 swapper/63 6 swapper/64 18 swapper/7 6 swapper/72 7 swapper/8 We changed the OOM killer in 4.6 (see https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=aac453635549699c13a84ea1456d5b0e574ef855). Looks like we have good behaviour with 4.6 which could be a result of the change. I am yet to look at the source of memstress_ng, but if the processes selected for OOM impact the result of the test, we could have a probable explanation. It will also be interesting to continue the bisect and see where we end up. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1573062 Title: memory_stress_ng failing for IBM Power S812LC(TN71-BP012) for 16.04 Status in linux package in Ubuntu: In Progress Status in linux source package in Wily: In Progress Status in linux source package in Xenial: In Progress Status in linux source package in Yakkety: In Progress Bug description: memory_stress_ng, as part of server certification is failing for IBM Power S812LC(TN71-BP012) in bare metal mode. Failing in this case is defined by the test locking up the server in an unrecoverable state which only a reboot will fix. I will be attaching screen and kern logs for the failures and a successful run on 14.04 on the same server. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1573062/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
