[Rack] Noisebridge-discuss mail server dead?
Ben Kochie
ben at nerp.net
Tue Mar 19 21:58:46 UTC 2013
I made this nice tool to examine the cgroup use:
/usr/local/sbin/get-cgroup-memory-use.sh
memory max limit cgroup
-------------------------------------------------------------
22528 KiB 26284 KiB 65536 KiB bind9
1480 KiB 16384 KiB 32768 KiB clamsmtp
15640 KiB 184980 KiB 262144 KiB posfix
204052 KiB 461428 KiB 524288 KiB mysql
120508 KiB 131072 KiB 131072 KiB mailman
193216 KiB 320976 KiB 393216 KiB clamav-daemon
224424 KiB 786432 KiB 786432 KiB apache2
=============================================================
730888 KiB 0 KiB -1 KiB Default
As you can see, the clamsmtp cgroup hit 16MB and died, but is now
32MB. I'm guessing it leaks.
-ben
On Tue, 19 Mar 2013, Ben Kochie wrote:
> It looks like my memory limit on clamsmtpd was a bit low (16MB)
>
> Mar 19 20:58:16 m2 kernel: [5761136.017754] clamsmtpd invoked oom-killer:
> gfp_mask=0xd0, order=0, oom_adj=0, oom_score_adj=0
> Mar 19 20:58:16 m2 kernel: [5761136.017760] clamsmtpd cpuset=/ mems_allowed=0
> Mar 19 20:58:16 m2 kernel: [5761136.017880] memory: usage 16384kB, limit
> 16384kB, failcnt 220
> Mar 19 20:58:16 m2 kernel: [5761136.017883] memory+swap: usage 16384kB, limit
> 9007199254740991kB, failcnt 0
>
> I've doubled the memory limit for clamsmtpd to 32MB.
>
> Andy, please do not enable swap, it just makes things worse. All of the
> services are memory isolated now, so if there is an OOM, it's due to
> reservation limits on a per cgroup basis.
>
> -ben
>
> On Tue, 19 Mar 2013, Andy Isaacson wrote:
>
>> The mail system broke due to OOM errors. I restarted the daemons and
>> flushed the queue.
>>
>> -andy
>>
>> On Tue, Mar 19, 2013 at 11:00:32AM -0700, Mitch Altman wrote:
>>> Hi Andy,
>>> Are you someone who can check the status of the Noisebridge email server?
>>> It seems to be a bit quiet lately.
>>> Thanks,
>>> Mitch.
>>>
>>> ----------------
>>>> From: john_re at fastmail.us
>>>> To: noisebridge-discuss-owner at lists.noisebridge.net; danny at spesh.com;
>>>> liz at bookmaniac.org
>>>> CC: maltman23 at hotmail.com; jim at systemateka.com
>>>> Subject: Noisebridge-discuss mail server dead?
>>>> Date: Tue, 19 Mar 2013 09:11:33 -0700
>>>>
>>>> I sent it mail yesterday , still not through yet,
>>>> & no other mail from nb either.
>>>>
>>>> https://www.noisebridge.net/pipermail/noisebridge-discuss/2013-March/date.html
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