qmail-rspawn taking 99% cpu

Hi all,
I have machine that only forwards e-mails to another site. There was a
problem with some app and this machine received over 130k of very small
e-mail, that was on the 25 of Sep. I still see about 80K of the e-mails
in the queue and log shows a very slow delivery, also from time to time
it stops delivering.
I noticed that qmail-rspawn and qmail-send are taking almost all of the
cpu power and the machine is a high-end Sun server.
Do you think there is something wrong or is it normal for qmail-rspawn
to take so much cpu power under heavy delivery?
Thanks,
Vahid.

Here is a few lines from truss output of qmail-rspawn:
poll(0xFFBFF6F0, 101, -1) = 101
sigprocmask(SIG_BLOCK, 0xFFBFFCC0, 0x00000000) = 0
sigprocmask(SIG_UNBLOCK, 0xFFBFFCC0, 0x00000000) = 0
poll(0xFFBFF6F0, 101, -1) = 101
sigprocmask(SIG_BLOCK, 0xFFBFFCC0, 0x00000000) = 0
sigprocmask(SIG_UNBLOCK, 0xFFBFFCC0, 0x00000000) = 0
poll(0xFFBFF6F0, 101, -1) = 101
sigprocmask(SIG_BLOCK, 0xFFBFFCC0, 0x00000000) = 0
sigprocmask(SIG_UNBLOCK, 0xFFBFFCC0, 0x00000000) = 0
....
and this continues for ever...


Vahid moghaddasi wrote:
> Hi all,
> I have machine that only forwards e-mails to another site. There was a
> problem with some app and this machine received over 130k of very small
> e-mail, that was on the 25 of Sep. I still see about 80K of the e-mails
> in the queue and log shows a very slow delivery, also from time to time
> it stops delivering.
> I noticed that qmail-rspawn and qmail-send are taking almost all of the
> cpu power and the machine is a high-end Sun server.
> Do you think there is something wrong or is it normal for qmail-rspawn
> to take so much cpu power under heavy delivery?
> Thanks,
> Vahid.

Vahid moghaddasi wrote:

> Hi all,
> I have machine that only forwards e-mails to another site. There was a
> problem with some app and this machine received over 130k of very small
> e-mail, that was on the 25 of Sep. I still see about 80K of the e-mails
> in the queue and log shows a very slow delivery, also from time to time
> it stops delivering.
> I noticed that qmail-rspawn and qmail-send are taking almost all of the
> cpu power and the machine is a high-end Sun server.
> Do you think there is something wrong or is it normal for qmail-rspawn
> to take so much cpu power under heavy delivery?
> Thanks,
> Vahid.
>

Vahid,

qmail-showctl,logs?
Remote concurency, clienttimeout?

are these messages destined for your remote servers or are these bounce
backs?

AK

AK wrote:
>
> qmail-showctl,logs?
> Remote concurency, clienttimeout?
The logs do not have any errors and are not updating while qmail-rspawn
is taking all cpu, here are some output from qmail-showctl:

qmail home directory: /var/qmail.
user-ext delimiter: -.
paternalism (in decimal): 2.
silent concurrency limit: 120.
subdirectory split: 23.
user ids: 30001, 30002, 30003, 0, 30004, 30005, 30006, 30007.
group ids: 15, 16.
concurrencylocal: (Default.) Local concurrency is 10.
concurrencyremote: Remote concurrency is 100.
timeoutconnect: (Default.) SMTP client connection timeout is 60
seconds.
timeoutremote: (Default.) SMTP client data timeout is 1200 seconds.
timeoutsmtpd: (Default.) SMTP server data timeout is 1200 seconds.

>
> are these messages destined for your remote servers or are these bounce
> backs?
The are just e-mails ready to go to an off-site archiving company.
I noticed when I kill qmail-rspawn when it is using too much cpu, then
everything goes back to normal and mails start to go out. This will
last about 40k mail or so until qmail-rspawn takes too much of cpu
again, I have to kill it again. If not too many mails in the queue,
things are fine.
I do not have the todo patch installed, this is just netqmail-1.05 out
of the box following DS's qmail handbook.
Thanks,