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<br><blockquote style="border-left: 2px solid rgb(0, 0, 255); padding-left: 5px; margin-left: 5px; margin-right: 0px;"><hr><b>From:</b> bert hubert [mailto:bert.hubert@netherlabs.nl]<br><b>To:</b> Nico van Royen [mailto:nico@van-royen.nl]<br><b>Cc:</b> pdns-users@mailman.powerdns.com<br><b>Sent:</b> Wed, 11 Oct 2006 21:26:29 +0200<br><b>Subject:</b> Re: [Pdns-users] rec_control with forking<br><br><!-- -->The 'fork' option is experimental. We have concrete plans to improve it, but<br>as it gives large financial benefits for users (you can basically run with<br>40% less servers), we are hoping someone is willing to sponsor 'enterprise<br>grade multi processor' support. </blockquote><br>You where pretty dead on with the 40%.. roughly 12k as opposed to 8k when the recursor is bound to both cores (dual core D805).<br>Using the --socket-pid with the rec_control now indeed gives some better statistics in the rrd graphs, thanks<br><br><blockquote style="border-left: 2px solid rgb(0, 0, 255); padding-left: 5px; margin-left: 5px; margin-right: 0px;">Depends a bit. Both recursor and auth consume lots of memory *bandwidth*. It<br>appears there might even be a performance drop beyond 2G of memory use by<br>the recursor.</blockquote><br>Any idea how much of a performance drop, or noticable in any case?<br><blockquote style="border-left: 2px solid rgb(0, 0, 255); padding-left: 5px; margin-left: 5px; margin-right: 0px;"><span></span>The authoritative server needs a lot less memory, and loves memory<br>bandwidth. <br><br>In short -> get dual opterons.</blockquote><br>Coming to that subject, and hoping not to start an intel/amd flame.... Does pdns itself have any liking to a particular hardware cpu (opterons, xeon, sparc, pa-risc etc?). I read that SUN donated a T2000 for testing?.. kinda curious to the result on such a thing :)<br><br>Nico</body></html>