Date: Tue, 20 Apr 2004 09:54:18 -0400 From: Vivek Khera <vivek@khera.org> To: stable@freebsd.org Subject: Re: HTT and SMP question Message-ID: <378FFDBC-92D2-11D8-A77C-000A9578CFCC@khera.org> In-Reply-To: <20040420085322.GV32493@e-card.bg> References: <20040419085841.GB64662@freenix.no> <20040419090049.GA51659@chihiro.leafy.idv.tw> <20040419092052.GD64662@freenix.no> <20040419093523.GA34419@xor.obsecurity.org> <20040420073837.GS32493@e-card.bg> <20040420081334.GA56291@xor.obsecurity.org> <20040420085322.GV32493@e-card.bg>
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--Apple-Mail-4--1064640661 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII; format=flowed On Apr 20, 2004, at 4:53 AM, Rumen Telbizov wrote: > Would you point to a case where machdep.hlt_logical_cpus=0 does > show better performance results? httpd ? > There's a big thread over in Postgres lists about HTT and Xeon processors. The consensus is that HTT is bad for postgres, and Xeon's cache handling is also bad for certain Xeon's. The cache handling stuff hasn't been totally understood yet, though. Vivek Khera, Ph.D. +1-301-869-4449 x806 --Apple-Mail-4--1064640661 content-type: application/pgp-signature; x-mac-type=70674453; name=PGP.sig content-description: This is a digitally signed message part content-disposition: inline; filename=PGP.sig content-transfer-encoding: 7bit -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (Darwin) iD8DBQFAhSuOBmsZ3mzf/kkRAttbAJ4pBArUKb+p4tfIuE2y6jf3mLEdHQCgyXvJ xasH0FwjbsG2HFsd8n7Y+Ws= =+AXu -----END PGP SIGNATURE----- --Apple-Mail-4--1064640661--
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