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Our internal application website that is hosted on a LAMP is very slow to load.

With firebug, we get this : alt text

Most of those files are .js and everything is on the same domain. We can't find why there are so many DNS Lookup, it's insane !

Can you please help us ? Thanks !

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Id the graph you posted showing DNS lookups, because I don't see that? –  joeqwerty Dec 3 '10 at 14:51
    
The DNS lookups are in blue. –  Bastien974 Dec 3 '10 at 14:54
    
Is the graph showing a single connection\session to the web site? –  joeqwerty Dec 3 '10 at 15:01
    
how many js\css files are there and now are they included in the webpages? –  Sage Dec 3 '10 at 15:17
2  
Well my suggestion at this point would be to run a packet capture on the client and see what all of the DNS lookups are for. –  joeqwerty Dec 3 '10 at 16:12

2 Answers 2

up vote 1 down vote accepted

We found that the KeepAlive was at off on the Apache conf, this partially solve our issue because now our website isn't working on Chrome/Safari.

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Check out this answer where someone had a similar issue, turned out it was iptables causing a bottleneck. Turn off any firewalls and see what you get!

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Thx but I already saw this post and tried, no luck :( –  Bastien974 Dec 3 '10 at 15:51

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