[rt-users] CPU Wait Maxed Out
Eriks Goodwin-Pfister
eriks at centritech.net
Tue Jun 1 10:57:41 EDT 2010
I deleted the mailq, redirected the address for the odd mailq entries to an alternate mailbox, etc.
As for memory, I see from sorting "top" by memory usage that apache is the memory hog... Any idea what would cause this on an RT box?
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
2665 apache 15 0 207m 81m 3692 S 0.0 8.6 1:29.41 httpd
2387 apache 15 0 206m 78m 3692 S 0.0 8.3 1:44.80 httpd
2668 apache 17 0 206m 75m 3896 S 0.0 8.0 1:32.49 httpd
2496 apache 15 0 205m 70m 3880 S 0.0 7.5 1:12.07 httpd
2669 apache 15 0 204m 67m 3892 S 0.0 7.1 1:10.97 httpd
2391 apache 15 0 206m 65m 3636 S 0.0 6.9 1:07.24 httpd
2385 apache 15 0 210m 62m 3308 S 0.0 6.6 1:29.17 httpd
2401 apache 17 0 208m 57m 3644 S 0.0 6.1 1:18.16 httpd
2388 apache 15 0 204m 56m 3568 S 0.0 6.0 1:01.46 httpd
2389 apache 15 0 207m 56m 3824 S 0.0 5.9 1:10.61 httpd
2390 apache 15 0 208m 54m 3592 S 0.0 5.8 1:33.90 httpd
2493 apache 17 0 203m 50m 3844 S 0.0 5.4 1:02.30 httpd
2392 apache 15 0 207m 50m 3232 S 0.0 5.3 1:10.83 httpd
2386 apache 15 0 207m 47m 3592 S 0.0 5.0 1:24.97 httpd
2494 apache 15 0 205m 46m 3648 S 0.0 4.9 1:10.75 httpd
2492 apache 15 0 204m 43m 3812 S 0.0 4.6 1:11.58 httpd
2275 root 15 0 115m 15m 3116 S 0.0 1.6 0:04.33 httpd
2159 mysql 18 0 138m 8704 2792 S 0.0 0.9 0:01.67 mysqld
----- Original Message -----
From: "Kenneth Marshall" <ktm at rice.edu>
To: "Eriks Goodwin-Pfister" <eriks at centritech.net>
Cc: "rt-users" <rt-users at lists.bestpractical.com>
Sent: Tuesday, June 1, 2010 9:55:06 AM
Subject: Re: [rt-users] CPU Wait Maxed Out
On Tue, Jun 01, 2010 at 09:48:24AM -0400, Eriks Goodwin-Pfister wrote:
> But then my question becomes, "why did this happen all of a sudden?"
> We have not changed user loads, usage levels, etc. This is a dedicated
> box being used by about 5 active users and 20 intermittent (once a
> week) users. Is 1 Gb of memory not enought for RT with such a light
> loading?
>
> And does anyone have any idea what those odd mailq entries are? I have
> to go in and delete several hundred of them every day or two.
>
> Thanks,
> Eriks
>
Hi Eriks,
Obviously, something did change or you would not be having a
problem. :) The harder part is to discover what changed and how
it is affecting your system. Those odd mailq entries if they
are being fed to RT could bump the load on your system. Do
you have any kind of filtering pre-RT to prevent bogus mail
from hitting the RT server?
Regards,
Ken
>
> ----- Original Message -----
> From: "Richard Skelton" <Richard.Skelton at infineon.com>
> To: "Eriks Goodwin-Pfister" <eriks at centritech.net>
> Sent: Tuesday, June 1, 2010 9:07:58 AM
> Subject: Re: [rt-users] CPU Wait Maxed Out
>
> Hi Eriks,
> Yes as I thought you are short on real memory.
> Look at the swap.
> Here is a busy 16 core Linux system of mine with load of free memory:-
> procs -----------memory---------- ---swap-- -----io---- --system--
> ----cpu---- r b swpd free buff cache si so bi bo in cs us sy
> id wa
...lots of repetitive information deleted...
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