From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lists.gentoo.org ([140.105.134.102] helo=robin.gentoo.org) by nuthatch.gentoo.org with esmtp (Exim 4.50) id 1EMbC2-00019e-Ju for garchives@archives.gentoo.org; Tue, 04 Oct 2005 01:02:07 +0000 Received: from robin.gentoo.org (localhost [127.0.0.1]) by robin.gentoo.org (8.13.5/8.13.5) with SMTP id j940r7gH002631; Tue, 4 Oct 2005 00:53:07 GMT Received: from mail.netspace.net.au (thunder.netspace.net.au [203.10.110.71]) by robin.gentoo.org (8.13.5/8.13.5) with ESMTP id j940nPJ1012095 for ; Tue, 4 Oct 2005 00:49:26 GMT Received: from orpheus (unknown [150.101.6.82]) by mail.netspace.net.au (Postfix) with ESMTP id 221B2498B3 for ; Tue, 4 Oct 2005 10:57:31 +1000 (EST) Subject: [gentoo-user] [smp related] 2.6.13 is 10x slower than 2.6.12! From: Iain Buchanan To: gentoo-user@lists.gentoo.org In-Reply-To: <1127788864.11645.20.camel@orpheus> References: <1127788864.11645.20.camel@orpheus> Content-Type: text/plain Date: Tue, 04 Oct 2005 10:27:50 +0930 Message-Id: <1128387470.12718.3.camel@orpheus> Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@gentoo.org Reply-to: gentoo-user@lists.gentoo.org Mime-Version: 1.0 X-Mailer: Evolution 2.2.3 Content-Transfer-Encoding: 7bit X-Archives-Salt: be6eaa98-7464-4fc6-a337-e4f23114a5cb X-Archives-Hash: 5849f05ffb1b5c501d80bf0f8180c35e Not long ago, I griped about 2.6.13 being _very_ slow to boot and run. My original email is at the bottom. I've since recompiled the kernel without SMP and Hyperthreading, and the system is _much_ faster. So, there is a problem with 2.6.13 and SMP or Hyperthreaded machines. Can anyone else confirm this? What should I do? Is there a kernel.org bugzilla? Or perhaps I should put it in the gentoo bugzilla? Any pointers would be appreciated... thanks. On Tue, 2005-09-27 at 12:11 +0930, Iain Buchanan wrote: > I just compiled 2.6.13-gentoo-r2 with mostly the same options as > 2.6.12-gentoo-r7 (my reference point). The first time I booted, it took > about 10-15 minutes on my 3GHz P4 laptop! I watched the gdm background > slowly display over about 30 seconds. > > I thought it might have something to do with the new default timer > frequency, which I set to 250Hz instead of 1000Hz (which is the default > for pre 2.6.13 kernels). According to various online sites, 250Hz > should still be just as usable, and may even use less power, increasing > my battery performance... > > So I changed the timer frequency back to 1000Hz, recompiled and now it > seems a little faster, but no where near 2.6.12. It now boots in maybe > 5 minutes, and the gdm theme takes about 5s to display. > > glxgears (not maximised) gives me about 30 fps with a radeon 9700! > > I checked the frequency governor, and the default is still > 'performance'. /proc/acpi/processor/CPU0/throttling shows the maximum > frequency is active as per normal. > > Other kernel options I changed are: > - support for software suspend added (could this be it? I definitely saw > the message that no valid suspend was found in my swapfile, > and /proc/swaps shows that I have swap enabled as per usual) > - removed unnecessary SCSI drivers (I don't have anything SCSI) > - removed SATA support (I definitely don't have SATA) > > Info: > Dell Ispiron 9100, 3 GHz HT Pentium 4 > 2.6.12 and 2.6.13: SMP support for 2 processors included > > I've seen 1 post online about the same thing - slow running 2.6.13, so > surely there must be some people in the world running it ok! Any help > on this would be appreciated. > > TIA, -- Iain Buchanan -- gentoo-user@gentoo.org mailing list