Date: Tue, 20 Nov 2007 19:01:25 +0100 From: "Claus Guttesen" <kometen@gmail.com> To: "Pete French" <petefrench@ticketswitch.com> Cc: freebsd-stable@freebsd.org, ivoras@freebsd.org, lol@chistydom.ru Subject: Re: 2 x quad-core system is slower that 2 x dual core on FreeBSD Message-ID: <b41c75520711201001j6746f7b7r85d14dddd5a9eec8@mail.gmail.com> In-Reply-To: <E1IuX7W-0002Mw-3Z@dilbert.ticketswitch.com> References: <47431B75.4040601@chistydom.ru> <E1IuX7W-0002Mw-3Z@dilbert.ticketswitch.com>
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> > Thank you for your research. I think you can get more %sys with 4-core > > processors. For me 2xquad-core systems are now completely unusable as > > PHP backends. > > I am getting very alarmed by this discussion as we just took delivery > of ten 2x quad core systems to be deployes as heavy webservers in order to > replace the dual core ones. probably under 7.0 as 6.3 wont boot PAE and > they have 16 gigs of memory. I'm running two DL360 G5 webservers each with two quad-core cpu's. Each have 8 GB of ram, one is 2 Ghz and the other is 2.33 Ghz. They run just fine. These two webservers have twice the weight of three opterons with two dual-core cpu's on our coyote load-balancer. The servers are so fast I had to adjust the read- and write-size in fstab for the nfs-mounts. Using 8kb I got the 'nfs server not responding - alive again' during peak on the new servers. Using a 2kb size instead solved my problem. They handle twice as much traffic as the 4-way-opterons. The quad-cores run 7.0 beta2 with ule, php, apache. -- regards Claus When lenity and cruelty play for a kingdom, the gentlest gamester is the soonest winner. Shakespeare
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