guam - high number of crashes

[Skale, Franz]

Hi,
there are several issues with guam, so disable it. (Search the archives, 
i supplied a howto disable guam).
Seems to be a huge memleak.

Best regards
Franz


  2020-03-10 16:26, schrieb Valentin Laskov:
> Hi,
> 
> 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,  
> 0,0 s
> 
> 
> 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
> 
> Regards!
> Valentin
> 
> На 10.03.2020 в 16:37, David Obando написа:
>> Hi,
>> 
>> 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[13456]: 12:02:26.753 [error] CRASH REPORT
>> Process <0.17627.1> with 0 neighbours exited with reason: bad argument
>> in call to
>> erlang:bit_size([[<<"FwFA45zxjFeGa7qcQAEPKDOCRwuc9jxj0r0rxPdwmzeJ5CC3yN0xjt1\r\n98V8++MNVmigeaAKzA4jTnaG6AHB6Zr6LC...">>],...])
>> 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[2577]: 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!
>> 
>> David
>> 
>> 
>> 
>> 
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