guam - high number of crashes
laskov at festa.bg
Tue Mar 10 16:26:52 CET 2020
Recently I wrote about my troubles with guam. I think that the core of
my problem is a slow storage while some users are migrating their mails
to my server.
top shows very high percent (54.5 and more) waiting for a storage operations
%Cpu(s): 6,3 us, 2,7 sy, 0,0 ni, 36,5 id, 54,5 wa, 0,0 hi, 0,1 si,
Also I supose there is a bug in guam or in erlang . top shows that
beam.smp consumes more and more virtual memory.
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
26108 root 20 0 13,0g 6,1g 908 S 21,1 79,7 23:57.30 beam.smp
When the virtual memory runs out the kernel kills guam and systemd
starts it again. dmesg shows
Out of memory: Kill process 9123 (beam.smp) score 791 or sacrifice child
Killed process 9123 (beam.smp), UID 0, total-vm:21696728kB,
anon-rss:5484380kB, file-rss:0kB, shmem-rss:0kB
I forced myself to discard syncroton log messages by
ln -s /dev/null /var/log/kolab-syncroton/console.log
and imapd log messages too
На 10.03.2020 в 16:37, David Obando написа:
> in my pretty fresh kolab (16.1) I have some trouble with a high number
> of guam crashes and suspect the crashes to also destabilize cyrus.
> I currently have 5 domains and 21 mailboxes in use, plan is to scale
> higher. Because of the occuring guam/cyrus issues I stopped migrating
> more users to the kolab system.
> I have thousands of crash reports per day, syslog then shows:
> Mar 10 12:02:26 mail guam: 12:02:26.753 [error] CRASH REPORT
> Process <0.17627.1> with 0 neighbours exited with reason: bad argument
> in call to
> in eimap:joined/2 line 487
> Logfiles in /var/log/guam show detailed CRASH and ERROR reports.
> Additionally I'll receive the following syslog errors for several
> existing mailboxes:
> Mar 10 15:23:49 mail cyrus/imaps: IDLE: error sending message INIT
> to idled for mailbox example.de!user.alice: No such file or directory.
> Falling back to polling every 60 seconds.
> Testusers describe errors when accessing their mailboxes with
> mailclients (e.g. Thunderbird), like mails aren't downloaded, after
> sending mails can't be stored in sent folder.
> Does anyone have a clue, what could be wrong or how I could fix my issues?
> Thanks very much!
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