Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965046AbVLVEQY (ORCPT ); Wed, 21 Dec 2005 23:16:24 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965048AbVLVEQX (ORCPT ); Wed, 21 Dec 2005 23:16:23 -0500 Received: from mail10.syd.optusnet.com.au ([211.29.132.191]:23736 "EHLO mail10.syd.optusnet.com.au") by vger.kernel.org with ESMTP id S965046AbVLVEQX (ORCPT ); Wed, 21 Dec 2005 23:16:23 -0500 References: <20051214234016.0112a86e.akpm@osdl.org> <9a8748490512211514g62bec66dqfb00b4dc1aeb7628@mail.gmail.com> Message-ID: X-Mailer: http://www.courier-mta.org/cone/ From: Con Kolivas To: Jesper Juhl Cc: Andrew Morton , linux-kernel@vger.kernel.org Subject: Re: 2.6.15-rc5-mm3 Date: Thu, 22 Dec 2005 15:16:10 +1100 Mime-Version: 1.0 Content-Type: multipart/signed; boundary="=_mimegpg-kolivas.org-3942-1135224970-0001"; micalg=pgp-sha1; protocol="application/pgp-signature" Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2624 Lines: 67 This is a MIME GnuPG-signed message. If you see this text, it means that your E-mail or Usenet software does not support MIME signed messages. --=_mimegpg-kolivas.org-3942-1135224970-0001 Content-Type: text/plain; format=flowed; charset="US-ASCII" Content-Disposition: inline Content-Transfer-Encoding: 7bit Jesper Juhl writes: > On 12/15/05, Andrew Morton wrote: >> > >> >> -mm-implement-swap-prefetching.patch >> -mm-implement-swap-prefetching-default-y.patch >> -mm-implement-swap-prefetching-tweaks.patch >> -mm-implement-swap-prefetching-tweaks-2.patch >> -mm-swap-prefetch-magnify.patch >> >> Dropped swap prefetching, sorry. I wasn't able to notice much benefit from >> it in my testing, and the number of mm/ patches in getting crazy, so we don't >> have capacity for speculative things at present. >> > > > This is a bit sad. > On my system (1.4GHz Athlon w/512MB RAM, 768MB swap) this did have an effect. > One situation in particular where it helped (and which is a common > case for me) was when I had OpenOffice2 + Eclipse (with CDT) + xchat + > nedit + Firefox + a few konsole windows open (running KDE 3.5 btw and > all apps usually have a lot of content loaded), minimized all the apps > and then started an allyesconfig build in one window - the > allyesconfig build would drag the machine to its knees and eat up more > or less all RAM + swap, so I usually left it alone for a while to > finish and when I then came back later and reactivated the apps I had > minimized they came back pretty fast. Without the swap prefetch > patches things come back somewhat slower - it's not an earth > shattering difference, but it's definately noticable. Apart from the feedback I've gotten directly from users of the -ck patchset incorporating this, Andrew and lkml has had very few reports about it until he decided to drop it. I'm still maintaining the code in -ck indefinitely for the moment. Here's hoping he picks it up again in the future. Cheers, Con --=_mimegpg-kolivas.org-3942-1135224970-0001 Content-Type: application/pgp-signature Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) iD8DBQBDqiiKZUg7+tp6mRURApPrAJ0Y0HGUBjb8bxA9xXpPsbhAMbhOeACdGrc6 8MpUlpwAB4hRAtBrBTE/HzM= =UBNP -----END PGP SIGNATURE----- --=_mimegpg-kolivas.org-3942-1135224970-0001-- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/