Re: Slow performance in Apache

[Frederik Nosi <frederik.nosi@xxxxxxxxxxx>]

Hi,
On 08/19/2014 01:49 PM, Jeff Trawick wrote:

On Tue, Aug 19, 2014 at 6:00 AM, <pratibha.dhankhar@xxxxxxxxx> 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?

 

 

 

 

 

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Regards

Pratibha

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