Output spam: [../util/Fs.cpp:224] Unable to open ../memory.stat about oomd

[danobi]

I stared at the code for a bit and I think I know what's going on. You're right; the errors don't affect functionality. However, it was symptomatic of a deeper issue. I have a proposed fix in https://github.com/danobi/oomd/tree/memory_reclaim_stat . However, since I can't reproduce this issue, do you mind trying it out first?

I've explained the details of the bug in the commit message.

[hakavlad]

$ sudo oomd_bin
oomd running with conf_file=/etc/oomd.json interval=5
[../config/ConfigTypes.cpp:36] 2 Rulesets=
[../config/ConfigTypes.cpp:40]   Ruleset=user session protection
[../config/ConfigTypes.cpp:44]     DropIn=
[../config/ConfigTypes.cpp:46]       Detectors=0
[../config/ConfigTypes.cpp:48]       Actions=0
[../config/ConfigTypes.cpp:50]       DisableOnDrop=0
[../config/ConfigTypes.cpp:54]     SilenceLogs=
[../config/ConfigTypes.cpp:58]     DetectorGroup=pressure above 60 for 30s
[../config/ConfigTypes.cpp:63]       Detector=dump_cgroup_overview
[../config/ConfigTypes.cpp:65]         Args=
[../config/ConfigTypes.cpp:70]           cgroup=user.slice,system.slice
[../config/ConfigTypes.cpp:70]           always=true
[../config/ConfigTypes.cpp:63]       Detector=pressure_above
[../config/ConfigTypes.cpp:65]         Args=
[../config/ConfigTypes.cpp:70]           resource=memory
[../config/ConfigTypes.cpp:70]           cgroup=user.slice,system.slice
[../config/ConfigTypes.cpp:70]           threshold=60
[../config/ConfigTypes.cpp:70]           duration=30
[../config/ConfigTypes.cpp:63]       Detector=memory_reclaim
[../config/ConfigTypes.cpp:65]         Args=
[../config/ConfigTypes.cpp:70]           duration=10
[../config/ConfigTypes.cpp:70]           cgroup=user.slice/user-*.slice/session-*.scope,user.slice/user-*.slice/user@*.service/*,system.slice/*
[../config/ConfigTypes.cpp:79]     Action=kill_by_memory_size_or_growth
[../config/ConfigTypes.cpp:81]       Args=
[../config/ConfigTypes.cpp:86]         cgroup=user.slice/user-*.slice/session-*.scope,user.slice/user-*.slice/user@*.service/*,system.slice/*
[../config/ConfigTypes.cpp:40]   Ruleset=protection against low swap
[../config/ConfigTypes.cpp:44]     DropIn=
[../config/ConfigTypes.cpp:46]       Detectors=0
[../config/ConfigTypes.cpp:48]       Actions=0
[../config/ConfigTypes.cpp:50]       DisableOnDrop=0
[../config/ConfigTypes.cpp:54]     SilenceLogs=
[../config/ConfigTypes.cpp:58]     DetectorGroup=free swap goes below 15 percent
[../config/ConfigTypes.cpp:63]       Detector=swap_free
[../config/ConfigTypes.cpp:65]         Args=
[../config/ConfigTypes.cpp:70]           threshold_pct=15
[../config/ConfigTypes.cpp:79]     Action=kill_by_swap_usage
[../config/ConfigTypes.cpp:81]       Args=
[../config/ConfigTypes.cpp:86]         cgroup=user.slice/user-*.slice/session-*.scope,user.slice/user-*.slice/user@*.service/*,system.slice/*
[../Oomd.cpp:529] Running oomd
[../plugins/DumpCgroupOverview.cpp:59] cgroup=user.slice total=1084MB pressure=0.16:0.46:0.17 swapfree=0MB/0MB pgscan=222418
[../plugins/DumpCgroupOverview.cpp:59] cgroup=user.slice total=1084MB pressure=0.11:0.43:0.16 swapfree=0MB/0MB pgscan=222418
[../plugins/DumpCgroupOverview.cpp:59] cgroup=user.slice total=1085MB pressure=0.06:0.39:0.16 swapfree=0MB/0MB pgscan=222418
[../plugins/DumpCgroupOverview.cpp:59] cgroup=user.slice total=1084MB pressure=0.04:0.36:0.16 swapfree=0MB/0MB pgscan=222418
[../plugins/DumpCgroupOverview.cpp:59] cgroup=user.slice total=1084MB pressure=0.02:0.33:0.15 swapfree=0MB/0MB pgscan=222418
[../plugins/DumpCgroupOverview.cpp:59] cgroup=user.slice total=1084MB pressure=0.01:0.31:0.15 swapfree=0MB/0MB pgscan=222418
[../plugins/DumpCgroupOverview.cpp:59] cgroup=user.slice total=1084MB pressure=0.00:0.27:0.15 swapfree=0MB/0MB pgscan=222418
[../plugins/DumpCgroupOverview.cpp:59] cgroup=user.slice total=1085MB pressure=0.00:0.26:0.14 swapfree=0MB/0MB pgscan=222418
[../plugins/DumpCgroupOverview.cpp:59] cgroup=user.slice total=1085MB pressure=0.00:0.23:0.14 swapfree=0MB/0MB pgscan=222418
[../plugins/DumpCgroupOverview.cpp:59] cgroup=user.slice total=1085MB pressure=0.00:0.22:0.14 swapfree=0MB/0MB pgscan=222418
[../plugins/DumpCgroupOverview.cpp:59] cgroup=user.slice total=1085MB pressure=0.00:0.19:0.13 swapfree=0MB/0MB pgscan=222418
[../plugins/DumpCgroupOverview.cpp:59] cgroup=user.slice total=1085MB pressure=0.00:0.18:0.13 swapfree=0MB/0MB pgscan=222418
[../plugins/DumpCgroupOverview.cpp:59] cgroup=user.slice total=1085MB pressure=0.00:0.16:0.13 swapfree=0MB/0MB pgscan=222418
[../plugins/DumpCgroupOverview.cpp:59] cgroup=user.slice total=1085MB pressure=0.00:0.15:0.13 swapfree=0MB/0MB pgscan=222418

All right.