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Posted to users@httpd.apache.org by Carl Schrader <ca...@sabucat.com> on 2005/05/05 23:38:58 UTC
[users@httpd] One virtual server causes my whole network to come to a crawl
I have Apache 2.0 with 5 virtual servers set up. As of a couple days
ago, our network has been REAL slow. Today I tracked it back to Apache
and specifically this one virtual server. If I turn off this virtual
server, the network comes back to normal. I've looked at the logs and
don't see anything out of the ordinary.
Where should I start to track this down?
thanks
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Re: [users@httpd] One virtual server causes my whole network to come
to a crawl
Posted by Chris <li...@leftbrained.org>.
Carl Schrader wrote:
> It's just a simple site with some php and a couple images. BUT, I even
> removed the whole directory and replaced it with a single index.html
> and the same thing happens. As soon as I enable that virtual server
> and restart Apache, 30 seconds or so later, the network slows down to
> a crawl.
>
> TIA
>
How is that virtual host configured? are there any configuration options
that only it's running?
Just a place to look.
Chris
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Re: [users@httpd] One virtual server causes my whole network to come to a crawl
Posted by "Anthony G. Atkielski" <an...@atkielski.com>.
Carl Schrader writes:
> It's just a simple site with some php and a couple images. BUT, I even
> removed the whole directory and replaced it with a single index.html and
> the same thing happens. As soon as I enable that virtual server and
> restart Apache, 30 seconds or so later, the network slows down to a crawl.
What traffic do you see on the network when this happens?
--
Anthony
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Re: [users@httpd] One virtual server causes my whole network to come
to a crawl
Posted by Carl Schrader <ca...@sabucat.com>.
It's just a simple site with some php and a couple images. BUT, I even
removed the whole directory and replaced it with a single index.html and
the same thing happens. As soon as I enable that virtual server and
restart Apache, 30 seconds or so later, the network slows down to a crawl.
TIA
Patrick Donker wrote:
> Carl Schrader wrote:
>
>> I have Apache 2.0 with 5 virtual servers set up. As of a couple days
>> ago, our network has been REAL slow. Today I tracked it back to Apache
>> and specifically this one virtual server. If I turn off this virtual
>> server, the network comes back to normal. I've looked at the logs and
>> don't see anything out of the ordinary.
>>
>> Where should I start to track this down?
>
>
> By telling us what is doing the virtual server that appears to slow down
> your net. What is so special about it that it generates that much traffic?
>
> -Patrick
>
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>
>
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Re: [users@httpd] One virtual server causes my whole network to come
to a crawl
Posted by Patrick Donker <li...@webpagina.nu>.
Carl Schrader wrote:
> I have Apache 2.0 with 5 virtual servers set up. As of a couple days
> ago, our network has been REAL slow. Today I tracked it back to Apache
> and specifically this one virtual server. If I turn off this virtual
> server, the network comes back to normal. I've looked at the logs and
> don't see anything out of the ordinary.
>
> Where should I start to track this down?
By telling us what is doing the virtual server that appears to slow down
your net. What is so special about it that it generates that much traffic?
-Patrick
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Re: [users@httpd] One virtual server causes my whole network to come
to a crawl
Posted by Carl Schrader <ca...@sabucat.com>.
It seems to be a traffic issue actually. Apache is on it's own server.
If I unplug the Apache server from the network, the network works
correctly again. If I turn off the said virtual server, the same result
happens. I use custom usage logs for each virtual server and the size of
this particular server was about twice the size compared to the others.
I'm getting this in the error log:
[Thu May 05 11:42:29 2005] [warn] child process 1874 still did not exit,
sending a SIGTERM
[Thu May 05 11:42:29 2005] [warn] child process 1672 still did not exit,
sending a SIGTERM
[Thu May 05 11:42:29 2005] [warn] child process 1875 still did not exit,
sending a SIGTERM
[Thu May 05 11:42:29 2005] [warn] child process 1886 still did not exit,
sending a SIGTERM
[Thu May 05 11:42:29 2005] [warn] child process 1857 still did not exit,
sending a SIGTERM
[Thu May 05 11:42:29 2005] [warn] child process 1858 still did not exit,
sending a SIGTERM
[Thu May 05 11:42:29 2005] [warn] child process 1864 still did not exit,
sending a SIGTERM
[Thu May 05 11:42:30 2005] [notice] caught SIGTERM, shutting down
[Thu May 05 11:52:23 2005] [notice] Digest: generating secret for digest
authentication ...
[Thu May 05 11:52:23 2005] [notice] Digest: done
This is Redhat 9.0. <hiding face> Unfortunately, I know just enough
about Linux to get things running. I've never had to deal with an issue
like this. So I am clueless in figuring out what kinda traffic is
happening, etc. It FEELS like the traffic is outgoing though. If it were
incoming traffic, the traffic would still be coming in wouldn't it? I
mean if you go to the url in question, it currently loads the main
website instead. So that traffic would be the same.
ANY pointers to information about tracking traffic, etc would be
helpful. I'd like to learn from this mess.
Thank you for your understanding and time.
John Hudak wrote:
> Hi Carl:
> I can't provide a specific answer to your problems but I can ask some
> questions that may help you muddle thorough this. I am thinking this
> may be a resource contention problem on your machine that ultimately
> manifests itself as slow network traffic. I am assuming that when you
> are looking at network traffic the traffic is about the same on the 4
> server version versus the 5 server version? So, what OS are you using
> this under? If Linux, have you seen your process stack grow? doing a
> lot of disk swapping? Have you tuned the packet length processing -
> from what I recall, Windoz is more sensitive to this than Linux.
> These are just some things to think about...perhaps they can highlight
> an area to look more into.
> John
>
>
> Carl Schrader wrote:
>
>> I have Apache 2.0 with 5 virtual servers set up. As of a couple days
>> ago, our network has been REAL slow. Today I tracked it back to Apache
>> and specifically this one virtual server. If I turn off this virtual
>> server, the network comes back to normal. I've looked at the logs and
>> don't see anything out of the ordinary.
>>
>> Where should I start to track this down?
>>
>> thanks
>>
>>
>>
>> ---------------------------------------------------------------------
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>> Project.
>> See <URL:http://httpd.apache.org/userslist.html> for more info.
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>>
>>
>>
>
>
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>
>
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Re: [users@httpd] One virtual server causes my whole network to come
to a crawl
Posted by John Hudak <jo...@comcast.net>.
Hi Carl:
I can't provide a specific answer to your problems but I can ask some
questions that may help you muddle thorough this. I am thinking this
may be a resource contention problem on your machine that ultimately
manifests itself as slow network traffic. I am assuming that when you
are looking at network traffic the traffic is about the same on the 4
server version versus the 5 server version? So, what OS are you using
this under? If Linux, have you seen your process stack grow? doing a
lot of disk swapping? Have you tuned the packet length processing -
from what I recall, Windoz is more sensitive to this than Linux.
These are just some things to think about...perhaps they can highlight
an area to look more into.
John
Carl Schrader wrote:
> I have Apache 2.0 with 5 virtual servers set up. As of a couple days
> ago, our network has been REAL slow. Today I tracked it back to Apache
> and specifically this one virtual server. If I turn off this virtual
> server, the network comes back to normal. I've looked at the logs and
> don't see anything out of the ordinary.
>
> Where should I start to track this down?
>
> thanks
>
>
>
> ---------------------------------------------------------------------
> The official User-To-User support forum of the Apache HTTP Server
> Project.
> 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
> For additional commands, e-mail: users-help@httpd.apache.org
>
>
>
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