Sporadic Apache delays

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Hi Apache Gurus,

I am really troubled by this. Please provide your suggestions on how to address this:

My website is having sporadic delays (about 1% of requests are delayed). Most of the delayed resources are placed locally on the same box as Apache only and are not being proxied...
See the below log entries in extended log format:

210.56.91.174 - - [05/Aug/2009:23:01:48 +1000] 89 "GET /dafiles/OCA/OptusHome/HomeRedesign/lib/jquery.js HTTP/1.1" 200 100196 "http://mobile.optuszoo.com.au/cocoon/cgi-bin/info2you/static_file/display_file.cgi?file=helppictures.html"; "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; GTB6; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)"

220.238.26.112 - - [05/Aug/2009:23:07:24 +1000] 90 "GET /home/contents/personal/banner_central_1.jpg?_=1 HTTP/1.1" 200 55745 "http://www.optus.com.au/home/index.html"; "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Trident/4.0; GTB6; .NET CLR 1.1.4322)"

219.90.225.57 - - [05/Aug/2009:23:02:59 +1000] 174 "GET /dafiles/OCA/OptusHome/HomeRedesign/lib/jquery.js HTTP/1.1" 200 100196 "http://mobile.optuszoo.com.au/cocoon/aggregate/game.optus.mmode.ws/ojg_prd/html/gameMain.php?node_id=30121"; "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1;
Trident/4.0; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)"

All of these log entries took more than 60 seconds despite of being present locally.
I am using Apache 2.0.52 on Red Hat Enterprise Linux ES release 4 (Nahant Update 3).
The Apache is built in prefork mode.
This is a Production website serving millions of requests daily but we are having a large farm serving the customers and have sufficient capacity.
The interesting thing is consistently and at all times 1% of the requests are being delayed and the web resources being delayed are random and most often local.


Thanks,

Kind Regards,
Alok Chugh



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