El dom, 23 may 2021 a las 13:59, Sergio Belkin (<seb...@gmail.com>) escribió:
> El dom, 23 may 2021 a las 13:10, Sergio Belkin (<seb...@gmail.com>) > escribió: > >> >> >> El dom, 23 may 2021 a las 12:58, Neal Gompa (<ngomp...@gmail.com>) >> escribió: >> >>> On Sun, May 23, 2021 at 11:54 AM Sergio Belkin <seb...@gmail.com> wrote: >>> > >>> > Hi, >>> > I was reading the systemd-oomd documentation and it says: >>> > «More precisely, only cgroups with memory.oom.group set to 1 and leaf >>> cgroup nodes are eligible candidates.» >>> > (https://www.freedesktop.org/software/systemd/man/systemd-oomd.html) >>> > >>> > However I haven't found any "memory.oom.group" file set to 1: >>> > >>> > sudo find /sys -name "memory.oom.group" -exec grep -v '^0$' '{}' \; | >>> wc -l >>> > 0 >>> > >>> > So, Should I set memory.oom.group to 1? >>> > >>> >>> Do you have systemd-oomd-defaults installed? That's where the oomd >>> configuration is stored. >>> >>> >>> >>> -- >>> >>> Hi Neal >> >> rpm -qil systemd-oomd-defaults >> Name : systemd-oomd-defaults >> Version : 248.3 >> Release : 1.fc34 >> Architecture: x86_64 >> Install Date: jue 20 may 2021 06:06:11 >> Group : Unspecified >> Size : 145 >> License : LGPLv2+ >> Signature : RSA/SHA256, sáb 15 may 2021 17:50:23, Key ID >> 1161ae6945719a39 >> Source RPM : systemd-248.3-1.fc34.src.rpm >> Build Date : sáb 15 may 2021 14:10:24 >> Build Host : buildvm-x86-09.iad2.fedoraproject.org >> Packager : Fedora Project >> Vendor : Fedora Project >> URL : https://www.freedesktop.org/wiki/Software/systemd >> Bug URL : https://bugz.fedoraproject.org/systemd >> Summary : Configuration files for systemd-oomd >> Description : >> A set of drop-in files for systemd units to enable action from >> systemd-oomd, >> a userspace out-of-memory (OOM) killer. >> /usr/lib/systemd/oomd.conf.d >> /usr/lib/systemd/oomd.conf.d/10-oomd-defaults.conf >> /usr/lib/systemd/system/-.slice.d/10-oomd-root-slice-defaults.conf >> /usr/lib/systemd/system/user@ >> .service.d/10-oomd-user-service-defaults.conf >> >> And: >> >> cat /usr/lib/systemd/oomd.conf.d/10-oomd-defaults.conf >> /usr/lib/systemd/system/-.slice.d/10-oomd-root-slice-defaults.conf >> /usr/lib/systemd/system/user@ >> .service.d/10-oomd-user-service-defaults.conf >> [OOM] >> DefaultMemoryPressureDurationSec=20s >> [Slice] >> ManagedOOMSwap=kill >> [Service] >> ManagedOOMMemoryPressure=kill >> ManagedOOMMemoryPressureLimit=50% >> >> Just in case: >> systemd-analyze cat-config /etc/systemd/oomd.conf | egrep -v '^$|#' >> [OOM] >> [OOM] >> DefaultMemoryPressureDurationSec=20s >> > >> Still it's not clear for me if systemd-oomd is really enforced :) >> >> -- >> -- >> Sergio Belkin >> LPIC-2 Certified - http://www.lpi.org >> > > I was looking at https://testdays.fedoraproject.org/events/105 > > Swap Based Killing worked for but "Memory Pressure Based Killing" didn't > (stress-ng is not killed by systemd-oomd as is in > https://fedoraproject.org/wiki/QA:Testcase_Memory_Pressure_Based_Killing#How_to_test > ): > > may 23 13:46:34 munster.belkin.home kernel: Timer invoked oom-killer: > gfp_mask=0x100cca(GFP_HIGHUSER_MOVABLE), order=0, oom_score_adj=0 > > This is oomctl output: > Dry Run: no > Swap Used Limit: 90.00% > Default Memory Pressure Limit: 60.00% > Default Memory Pressure Duration: 20s > System Context: > Swap: Used: 6.0G Total: 7.9G > Swap Monitored CGroups: > Memory Pressure Monitored CGroups: > Path: /user.slice/user-1000.slice/user@1000.service > Memory Pressure Limit: 50.00% > Pressure: Avg10: 0.00 Avg60: 0.00 Avg300: 1.83 Total: 51s > Current Memory Usage: 5.9G > Memory Min: 0B > > Any ideas? > > -- > -- > Sergio Belkin > LPIC-2 Certified - http://www.lpi.org > Well I've reported the bug: https://bugzilla.redhat.com/show_bug.cgi?id=1964153 HTH -- -- Sergio Belkin LPIC-2 Certified - http://www.lpi.org
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