Date: Thu, 1 Dec 2005 20:23:16 -0500 From: "N.J. Thomas" <njt@ayvali.org> To: Norberto Meijome <freebsd@meijome.net> Cc: freebsd-questions@freebsd.org Subject: Re: overloaded webserver: nfs wait issue? Message-ID: <20051202012316.GD8773@ayvali.org> In-Reply-To: <438F9019.7020309@meijome.net> References: <20051201193813.GG15171@ayvali.org> <438F9019.7020309@meijome.net>
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* Norberto Meijome <freebsd@meijome.net> [2005-12-02 11:06:49 +1100]: > What's your MaxClients set to? It was set to 256, we actually lowered it to 180. > Please define your values for "lot of traffic". Running wc -l on the daily Apache access logs, I get: ~1.8million hits per day > What CPU? RAM (512MB seems a bit low nowadays)? Disks? One of the web servers is a (P4, 3GHz, 1GB RAM), the other is a (P3, 1.4GHz, 1GB RAM), they are load balanced evenly, both of them display the same error when the number of httpd processes reach MaxClients. > I dont think i can give much advice on the NFS side of things but in the > meantime I would : > - increase # of MaxClients (the default is RIDICULOUSLY small, > specially in 1.3. You will probably have to recompile with a new max. Higher than 256? > - Look at what the PHP scripts do : i.e., is there anything under your > control that can be improved? I'll ask the devs to take a look. > - You RAM seems OK ... you may want to tweak some sysctl or memory > settings in Apache (I seem to remember in 1.3 some to do with MMap, but > i could be wrong) ... or just add more RAM. Check vmstat (or systat -vm > 1) to see how much swapping is going on. Will do...thanks for the suggestions. Thomas -- N.J. Thomas njt@ayvali.org Etiamsi occiderit me, in ipso sperabo
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