From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <413D93EF.80305@kolivas.org> Date: Tue, 07 Sep 2004 20:56:47 +1000 From: Con Kolivas MIME-Version: 1.0 Subject: Re: swapping and the value of /proc/sys/vm/swappiness References: <413CB661.6030303@sgi.com> <20040906162740.54a5d6c9.akpm@osdl.org> <20040907000304.GA8083@logos.cnet> <413D8FB2.1060705@cyberone.com.au> In-Reply-To: <413D8FB2.1060705@cyberone.com.au> Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig605B5C3A5E688693378648F1" Sender: owner-linux-mm@kvack.org Return-Path: To: Nick Piggin Cc: Marcelo Tosatti , Andrew Morton , raybry@sgi.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, riel@redhat.com, mbligh@aracnet.com List-ID: This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig605B5C3A5E688693378648F1 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Nick Piggin wrote: > > > Marcelo Tosatti wrote: > >> >> Hi kernel fellows, >> >> I volunteer. I'll try something tomorrow to compare swappiness of >> older kernels like 2.6.5 and 2.6.6, which were fine on SGI's Altix >> tests, up to current newer kernels (on small memory boxes of course). >> > > Hi Marcelo, > > Just a suggestion - I'd look at the thrashing control patch first. > I bet that's the cause. Good point! I recall one of my users found his workload which often hit swap lightly was swapping much heavier and his performance dropped dramatically until I stopped including the swap thrash control patch. I informed Rik about it some time back so I'm not sure if he addressed it in the meantime. Cheers, Con --------------enig605B5C3A5E688693378648F1 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org iD8DBQFBPZPvZUg7+tp6mRURAt75AJoDO2MiPLxjsMuJ2LscDLluet48YQCeJeD4 5Wc+3JbjKC2DND3eCgBd2Ps= =rNxM -----END PGP SIGNATURE----- --------------enig605B5C3A5E688693378648F1-- -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: aart@kvack.org