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Posted to users@httpd.apache.org by Andre Eisenbach <an...@eisenbach.com> on 2003/06/13 00:58:39 UTC
[users@httpd] Apache is killing me...
...well, my server anyway...
I'm running Apache 2 on a RedHat Linux 7.3 server (I've been running 1.3 before with the same results though).
The server is hosting only 5 small websites with about 50GB of traffic per month. Really nothing special. The server load is usually about 0.50 or less and very responsive. Which confirms that the server really is up to the task. There are usually about 15 httpd processes running.
But about once a week (sometimes every two weeks), all of a sudden something goes nuts.
The server load spikes to almost 300+ (!!!), completely grinding the server to a halt. You can barely login at that point (remotely). The only way to get the server back under control is stoping apache and restarting it. No need to reboot. During the spike, there are over 120+ apache processes running. The logs don't show anything bad. MRTG shows the bandwith usage to go to almost 0 during these spikes, but that could be simply because the snmp server is not able to respond under the system load. Here's what such a spike looks like in MRTG:
http://eisenbach.com/~andre/posted/apache_spike.jpg
I can't login locally since the server is hosted somewhere else...
Any ideas?
Cheers,
Andre
RE: [users@httpd] Apache is killing me...
Posted by Sander Holthaus - Orange XL <in...@orangexl.com>.
I'm thinking the same here. Not sure how much memory you have, but with some
may clents at once I can see a potential problem.
I could be a spider or bot, but not a good one, since it doesn't obey any
rules/RFC by the looks of it.
Kind Regards,
Sander Holthaus
-----Original Message-----
From: Dirk-Willem van Gulik [mailto:dirkx@webweaving.org]
Sent: vrijdag 13 juni 2003 12:52
To: users@httpd.apache.org
Subject: Re: [users@httpd] Apache is killing me...
On Thu, 12 Jun 2003, Andre Eisenbach wrote:
> I'm running Apache 2 on a RedHat Linux 7.3 server (I've been running
> 1.3 before with the same results though).
So 1.3 has the exact same problem. That strongly suggests it is not a child
manamgenet issue but something caused by an external influence (say a
robot/spider) or something by a big in a cgi script, etc).
> I can't login locally since the server is hosted somewhere else...
>
> Any ideas?
You can set the relevant MaxClient to a lower valye; say 50 or 75 given your
load; so that this overload does no longer happen.
That may allow you to get a good look at the log file to see what causes the
problem. Which gives you a handle on how to solve it.
Dw
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Re: [users@httpd] Apache is killing me...
Posted by Dirk-Willem van Gulik <di...@webweaving.org>.
On Thu, 12 Jun 2003, Andre Eisenbach wrote:
> I'm running Apache 2 on a RedHat Linux 7.3 server (I've been running 1.3
> before with the same results though).
So 1.3 has the exact same problem. That strongly suggests it is not a
child manamgenet issue but something caused by an external influence (say
a robot/spider) or something by a big in a cgi script, etc).
> I can't login locally since the server is hosted somewhere else...
>
> Any ideas?
You can set the relevant MaxClient to a lower valye; say 50 or 75 given
your load; so that this overload does no longer happen.
That may allow you to get a good look at the log file to see what causes
the problem. Which gives you a handle on how to solve it.
Dw
---------------------------------------------------------------------
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See <URL:http://httpd.apache.org/userslist.html> for more info.
To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
" from the digest: users-digest-unsubscribe@httpd.apache.org
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