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Posted to users@httpd.apache.org by pr...@wipro.com on 2014/08/19 12:00:33 UTC
[users@httpd] Slow performance in Apache
Hi All,
Need urgent help from all you experts. We have a tomcat and apache server on same physical box .Earlier it was working fine however last week application is integrated with IDAM, since then whenever user is accessing the link through IDAM application is responding either very slow or not at all, Once apache is restarted ,again it start working and after 3-4 hours again same issue occurs. Please suggest.
Have done some tuning at apache end as well like
Timeout 120
KeepAlive Off
MaxKeepAliveRequests 100
KeepAliveTimeout 15
Still not working.
--
Regards
Pratibha
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Re: [users@httpd] Slow performance in Apache
Posted by Frederik Nosi <fr...@postecom.it>.
On 08/25/2014 08:25 PM, Rainer Jung wrote:
[...]
>> Out of curiosity, on the summary page generated by mod_status, the
>> description of W is:
>>
>> "*|W|*" Sending Reply
>>
>> I thought that when in this state, the corresponding thread / proccess
>> was sending the reply to the client. From your reply if i understood
>> correctly seems that when using mod_proxy (and mod_jk right?) the W
>> state includes the time spent on sending the request and geting a reply
>> from the origin.
>>
>> Is this right?
>
> Yes, "W" is everything between having read the request and logging the
> request after having send the response. So especially it includes
> forwarding in proxy or mod_jk and waiting/reading the response from
> the origin server.
>
> You should add response duration logging to the httpd server access
> log (%D) and to the origin server log file, if you want to track the
> performance of the latter. mod_jk allows you to additionally log
> origin server response times as observed by the httpd web server in
> the httpd access log.
Indeed is one of the first things that i do (enable %D) when configuring
httpd / tomcat etc.
I asked because i expected that when a lot of apache workers are in the
"W" state it was dueto slow clients or DOS attacks.
>
> Regards,
>
Thanks for your reply,
Frederik
> Rainer
>
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Re: [users@httpd] Slow performance in Apache
Posted by Rainer Jung <ra...@kippdata.de>.
Am 25.08.2014 um 19:33 schrieb Frederik Nosi:
> Hi,
> On 08/19/2014 01:49 PM, Jeff Trawick wrote:
>> On Tue, Aug 19, 2014 at 6:00 AM, <pratibha.dhankhar@wipro.com
>> <ma...@wipro.com>> wrote:
>>
>> Hi All,
>>
>> Need urgent help from all you experts. We have a tomcat and apache
>> server on same physical box .Earlier it was working fine however
>> last week application is integrated with IDAM, since then whenever
>> user is accessing the link through IDAM application is responding
>> either very slow or not at all, Once apache is restarted ,again it
>> start working and after 3-4 hours again same issue occurs. Please
>> suggest.
>>
>> Have done some tuning at apache end as well like
>>
>> Timeout 120
>>
>> KeepAlive Off
>>
>> MaxKeepAliveRequests 100
>>
>> KeepAliveTimeout 15
>>
>> Still not working.
>>
>>
>> See if there is a buildup over time of connections between httpd and
>> Tomcat. netstat and mod_status with ExtendedStatus On would make this
>> relatively easy. (mod_status won't show explicitly that the request
>> is handled by Tomcat, but you can check requests stuck in W state to
>> see if the URL is handled by Tomcat.)
>>
>
> Out of curiosity, on the summary page generated by mod_status, the
> description of W is:
>
> "*|W|*" Sending Reply
>
> I thought that when in this state, the corresponding thread / proccess
> was sending the reply to the client. From your reply if i understood
> correctly seems that when using mod_proxy (and mod_jk right?) the W
> state includes the time spent on sending the request and geting a reply
> from the origin.
>
> Is this right?
Yes, "W" is everything between having read the request and logging the
request after having send the response. So especially it includes
forwarding in proxy or mod_jk and waiting/reading the response from the
origin server.
You should add response duration logging to the httpd server access log
(%D) and to the origin server log file, if you want to track the
performance of the latter. mod_jk allows you to additionally log origin
server response times as observed by the httpd web server in the httpd
access log.
Regards,
Rainer
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Re: [users@httpd] Slow performance in Apache
Posted by Frederik Nosi <fr...@postecom.it>.
Hi,
On 08/19/2014 01:49 PM, Jeff Trawick wrote:
> On Tue, Aug 19, 2014 at 6:00 AM, <pratibha.dhankhar@wipro.com
> <ma...@wipro.com>> wrote:
>
> Hi All,
>
> Need urgent help from all you experts. We have a tomcat and apache
> server on same physical box .Earlier it was working fine however
> last week application is integrated with IDAM, since then whenever
> user is accessing the link through IDAM application is responding
> either very slow or not at all, Once apache is restarted ,again it
> start working and after 3-4 hours again same issue occurs. Please
> suggest.
>
> Have done some tuning at apache end as well like
>
> Timeout 120
>
> KeepAlive Off
>
> MaxKeepAliveRequests 100
>
> KeepAliveTimeout 15
>
> Still not working.
>
>
> See if there is a buildup over time of connections between httpd and
> Tomcat. netstat and mod_status with ExtendedStatus On would make this
> relatively easy. (mod_status won't show explicitly that the request
> is handled by Tomcat, but you can check requests stuck in W state to
> see if the URL is handled by Tomcat.)
>
Out of curiosity, on the summary page generated by mod_status, the
description of W is:
"*|W|*" Sending Reply
I thought that when in this state, the corresponding thread / proccess
was sending the reply to the client. From your reply if i understood
correctly seems that when using mod_proxy (and mod_jk right?) the W
state includes the time spent on sending the request and geting a reply
from the origin.
Is this right?
> --
>
> Regards
>
> *Pratibha ***
>
> The information contained in this electronic message and any
> attachments to this message are intended for the exclusive use of
> the addressee(s) and may contain proprietary, confidential or
> privileged information. If you are not the intended recipient, you
> should not disseminate, distribute or copy this e-mail. Please
> notify the sender immediately and destroy all copies of this
> message and any attachments.
>
> WARNING: Computer viruses can be transmitted via email. The
> recipient should check this email and any attachments for the
> presence of viruses. The company accepts no liability for any
> damage caused by any virus transmitted by this email.
>
> www.wipro.com <http://www.wipro.com>
>
>
>
>
> --
> Born in Roswell... married an alien...
> http://emptyhammock.com/
>
Re: [users@httpd] Slow performance in Apache
Posted by Jeff Trawick <tr...@gmail.com>.
On Tue, Aug 19, 2014 at 6:00 AM, <pr...@wipro.com> wrote:
> Hi All,
>
>
>
>
>
> Need urgent help from all you experts. We have a tomcat and apache server
> on same physical box .Earlier it was working fine however last week
> application is integrated with IDAM, since then whenever user is accessing
> the link through IDAM application is responding either very slow or not at
> all, Once apache is restarted ,again it start working and after 3-4 hours
> again same issue occurs. Please suggest.
>
> Have done some tuning at apache end as well like
>
>
>
> Timeout 120
>
> KeepAlive Off
>
> MaxKeepAliveRequests 100
>
> KeepAliveTimeout 15
>
>
>
> Still not working.
>
>
See if there is a buildup over time of connections between httpd and
Tomcat. netstat and mod_status with ExtendedStatus On would make this
relatively easy. (mod_status won't show explicitly that the request is
handled by Tomcat, but you can check requests stuck in W state to see if
the URL is handled by Tomcat.)
>
>
>
>
>
>
>
>
> --
>
> Regards
>
> *Pratibha *
>
> The information contained in this electronic message and any attachments
> to this message are intended for the exclusive use of the addressee(s) and
> may contain proprietary, confidential or privileged information. If you are
> not the intended recipient, you should not disseminate, distribute or copy
> this e-mail. Please notify the sender immediately and destroy all copies of
> this message and any attachments.
>
> WARNING: Computer viruses can be transmitted via email. The recipient
> should check this email and any attachments for the presence of viruses.
> The company accepts no liability for any damage caused by any virus
> transmitted by this email.
>
> www.wipro.com
>
--
Born in Roswell... married an alien...
http://emptyhammock.com/
[users@httpd] RE: Slow performance in Apache
Posted by Nitin Srivastava <sn...@sconcesolutions.com>.
Is it Unix or Windows?
What is the memory count for httpd?
-Nitin
________________________________________
From: pratibha.dhankhar@wipro.com [pratibha.dhankhar@wipro.com]
Sent: Tuesday, August 19, 2014 6:00 PM
To: users@httpd.apache.org
Subject: [users@httpd] Slow performance in Apache
Hi All,
Need urgent help from all you experts. We have a tomcat and apache server on same physical box .Earlier it was working fine however last week application is integrated with IDAM, since then whenever user is accessing the link through IDAM application is responding either very slow or not at all, Once apache is restarted ,again it start working and after 3-4 hours again same issue occurs. Please suggest.
Have done some tuning at apache end as well like
Timeout 120
KeepAlive Off
MaxKeepAliveRequests 100
KeepAliveTimeout 15
Still not working.
--
Regards
Pratibha
The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain proprietary, confidential or privileged information. If you are not the intended recipient, you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately and destroy all copies of this message and any attachments.
WARNING: Computer viruses can be transmitted via email. The recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email.
www.wipro.com
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