Date: Fri, 21 Sep 2007 06:40:26 -0500 From: Eric Anderson <anderson@freebsd.org> To: "Decibel!" <decibel@decibel.org> Cc: freebsd-performance@freebsd.org, Palle Girgensohn <girgen@pingpong.net>, Francisco Reyes <lists@stringsutils.com> Subject: Re: AMD or Intel? Message-ID: <46F3ADAA.6080208@freebsd.org> In-Reply-To: <57EF86A6-6062-4F1A-959E-41ABABD3F0CF@decibel.org> References: <E6C9DBADAE3839B380B736D7@rambutan.pingpong.net> <cone.1189710437.247473.77599.5001@35st.simplicato.com> <1F219879A7E5C565C96109FF@c-2f56e155.1521-1-64736c12.cust.bredbandsbolaget.se> <57EF86A6-6062-4F1A-959E-41ABABD3F0CF@decibel.org>
next in thread | previous in thread | raw e-mail | index | archive | help
Decibel! wrote: > On Sep 13, 2007, at 3:24 PM, Palle Girgensohn wrote: >> --On torsdag, torsdag 13 sep 2007 15.07.17 -0400 Francisco Reyes >> <lists@stringsutils.com> wrote: >> >>> Palle Girgensohn writes: >>> >>>> Now, I hear rumors that AMD is to be preferred over Intel for >>>> performance >>> >>> From what I have read in the past, specially in the postgresql list, it >>> seems the AMD64 cpus do better with Postgresql. Possibly because of >>> better bus architecture. >> >> I think this is not current information; the new woodcrest >> architecture performs mucg better, although this is deduced from this >> thread's discussion... > > Except this thread has largely glossed over the importance of memory > bandwidth, which is exactly the reason why Opterons have been beating > Xeons for several years. Last I'd heard, things were fairly close > between the two, but that would matter on how many cores and physical > CPUs you have. This is still true, even with the latest Intel Cores. For stuff that does massive memory work, AMD's seem to be faster. However, for non-memory intensive applications, the Intel procs are smokin' fast. > It would be good if someone could do a database benchmark for some of > the larger parts. > > Something else worth mentioning... a lot of work is being done to > improve PostgreSQL scalability for larger numbers of CPUs. If you're > looking at anything over 4 cores, I recommend going to 8.3 ASAP. Hmm. Sounds like you know a lot about database stuff (database architect!), maybe you would be a perfect candidate for the benchmark? :) Blue Skies! Eric
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?46F3ADAA.6080208>