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<br>Thanks Stefan...<br><br>SO, you just recommend to play only with max-cache-entries...? <br><br>I have 4GB ram and Xeon CPU.<br><br>is it possible to cache the entries on disk?? is it recommended also?<br><br><br>> Date: Mon, 7 Feb 2011 10:45:51 +0100<br>> From: zaphodb@zaphods.net<br>> To: maroon_ibrahim@hotmail.com<br>> CC: pdns-users@mailman.powerdns.com<br>> Subject: Re: [Pdns-users] PDNS Recursor on Debian / Low performance !!!URGENT!!!!<br>> <br>> On Mon, Feb 07, 2011 at 09:38:42AM +0000, Maroon Ibrahim wrote:<br>> ...<br>> > AS for the recursor.conf... I still didn't touch it.... what is your best recommendation to have the opimum cache?? <br>> > <br>> > Please advise....<br>> <br>> It depends on how much RAM you can spare. <br>> Setting max-cache-entries=1000000 will use around 300MB on i386 and ~550MB on<br>> x86_64. Leaving this unset (i.e. 0) the cache will have the potential to<br>> outgrow your machines available memory hence causing it to swap resulting in<br>> very bad performance obviously.<br>> Most ISP setups are fine with sticking to 1000000 entries, 2000000 will give<br>> you about 3-5% more cache hits depending on your load pattern ofc.<br>> <br>> Stefan<br>> -- <br>> "People say I shouldn't frown because it uses more muscles than smiling.<br>> Then I point out that Americans need their exercise."<br>> - anonymous<br> </body>
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