https://bugs.kde.org/show_bug.cgi?id=497848
Bug ID: 497848
Summary: Rebuilding thumbnails can lead to overuse of memory
Classification: Applications
Product: kphotoalbum
Version: 6.0.0
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: kpab...@willden.org
Reporter: johan...@zarl-zierl.at
Target Milestone: ---
SUMMARY
On memory-restrained systems, rebuilding all thumbnails can lead to the OOM
killer being triggered.
Description copied from bug #497163 where this was initially reported:
> However, several times the process was terminated by the OOM killer due to
> excessive RAM taken by the spawned ffmpeg processes (I don't know for sure,
> unfortunately, I haven't analysed this issue), I'm running this on a VM with
> 8 GB of RAM
ADDITIONAL INFORMATION
OOM Killer dmesg log
Dec 13 17:17:23 kubuntu-virtualbox kernel: Tasks state (memory values in
pages):
Dec 13 17:17:23 kubuntu-virtualbox kernel: [ pid ] uid tgid total_vm
rss rss_anon rss_file rss_shmem pgtables_bytes swapents oom_score_adj name
[...other lines omitted]
Dec 13 17:17:23 kubuntu-virtualbox kernel: [ 32893] 1000 32893 191297
67431 67302 129 0 929792 0 200 gdb
Dec 13 17:17:23 kubuntu-virtualbox kernel: [ 32916] 1000 32916 875180
504573 499724 783 4066 4845568 0 200 kphotoalbum
Dec 13 17:17:23 kubuntu-virtualbox kernel: [ 33194] 0 33194 119161
1592 1306 286 0 266240 0 0 fwupd
Dec 13 17:17:23 kubuntu-virtualbox kernel: [ 59488] 1000 59488 787532
433595 433103 492 0 4382720 0 200 ffmpeg
Dec 13 17:17:23 kubuntu-virtualbox kernel: [ 59531] 1000 59531 652165
378273 377419 854 0 3870720 0 200 ffmpeg
Dec 13 17:17:23 kubuntu-virtualbox kernel:
oom-kill:constraint=CONSTRAINT_NONE,nodemask=(null),cpuset=/,mems_allowed=0,global_oom,task_memcg=/user.slice/user-1000.slice/user@1000.service/app.slice/app-code@269c1bf1a3e843ee914e3bab80c1c>
Dec 13 17:17:23 kubuntu-virtualbox kernel: Out of memory: Killed process 32916
(kphotoalbum) total-vm:3500720kB, anon-rss:1998896kB, file-rss:3132kB,
shmem-rss:16264kB, UID:1000 pgtables:4732kB oom_score_adj:200
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