From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.2.3 (2007-08-08) on sa.int.altlinux.org X-Spam-Level: X-Spam-Status: No, score=-1.3 required=5.0 tests=AWL,BAYES_00 autolearn=ham version=3.2.3 Date: Thu, 28 Feb 2008 23:13:30 +0500 From: Andrey Rahmatullin To: ALT Linux general discussion list Message-ID: <20080228181330.GE32416@wrars-comp.wrarsdomain> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="6e7ZaeXHKrTJCxdu" Content-Disposition: inline X-Operating-System: ALT Linux Sisyphus X-Jabber-Id: wrar@altlinux.org User-Agent: Mutt/1.5.17 (2007-11-01) Subject: [Comm] =?koi8-r?b?RndkOiDrINfP0NLP09UgzyDRxNLP08LP0svFICh3YXM6?= =?koi8-r?b?IFtUdXhPbkljZS1kZXZlbF0gIkhvdyB0byBTbG93IERvd24gWW91?= =?koi8-r?b?ciBDb21wdXRlciBOZWVkbGVzc2x5IiwgYQlndWlkZSA6KSk=?= X-BeenThere: community@lists.altlinux.org X-Mailman-Version: 2.1.9 Precedence: list Reply-To: ALT Linux Community general discussions List-Id: ALT Linux Community general discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 28 Feb 2008 18:13:31 -0000 Archived-At: List-Archive: List-Post: --6e7ZaeXHKrTJCxdu Content-Type: text/plain; charset=koi8-r Content-Disposition: inline Content-Transfer-Encoding: quoted-printable ----- Forwarded message from Kenneth Crudup ----- Date: Wed, 27 Feb 2008 16:47:40 -0800 (PST) =46rom: Kenneth Crudup To: suspend2-devel/lists.tuxonice.net Subject: [TuxOnIce-devel] "How to Slow Down Your Computer Needlessly", a guide :) For some reason, I thought the Intel 760 processor ("Dothan" technology, 2.0GHz speed, 533MHz FSB) was a Pentium 4 architecture, so when building my kernels, would select CONFIG_MPENTIUM4. Performance, esp. on multi- threaded applications, seemed sluggish. Turns out that this chip's merely a Pentium M (CONFIG_MPENTIUMM), so the calculations to determine the cache-line size in the memory-management routines (and other places) was off by a factor of two larger so I was no doubt getting cacheline misses some 50% of the time- not to mention the kernel was using P4 optimizations (and maybe even instructions but I never got BUG()s/OOPSes) on a P3-arch CPU. The machine is visibly more responsive now. I'd been running that way for probably over a year. -Kenny --=20 Kenneth R. Crudup Sr. SW Engineer, Scott County Consulting, Los Angeles O: 3630 S. Sepulveda Blvd. #138, L.A., CA 90034-6809 (888) 454-8181 _______________________________________________ TuxOnIce-devel mailing list TuxOnIce-devel@lists.tuxonice.net http://lists.tuxonice.net/mailman/listinfo/tuxonice-devel ----- End forwarded message ----- --=20 WBR, wRAR (ALT Linux Team) Powered by the ALT Linux fortune(8): MikeOS is an operating system for x86 PCs, written entirely in assemb= ler =C1=C1=C1=C1=C1 =CE=C1=C4=CF =D7 =D3=D5=C4 =D0=CF=C4=C1=D4=D8 --6e7ZaeXHKrTJCxdu Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.8 (GNU/Linux) iEYEARECAAYFAkfG+coACgkQB4Vf7hFmt5UvKgCeK2SD3bB0/PvhLtFakCPMDIBa 8qgAn19SfFGblX4kvTEpldY6Nx1zboh/ =c5AH -----END PGP SIGNATURE----- --6e7ZaeXHKrTJCxdu--