From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <410DCD84.2070707@kolivas.org> Date: Mon, 02 Aug 2004 15:13:40 +1000 From: Con Kolivas MIME-Version: 1.0 Subject: Re: [PATCH] token based thrashing control References: <20040801175618.711a3aac.akpm@osdl.org> <410DAC89.4000002@kolivas.org> In-Reply-To: Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig4C644E89477BFD81916572FB" Sender: owner-linux-mm@kvack.org Return-Path: To: Rik van Riel Cc: Andrew Morton , linux-mm@kvack.org, sjiang@cs.wm.edu, linux-kernel@vger.kernel.org List-ID: This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig4C644E89477BFD81916572FB Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Rik van Riel wrote: > On Mon, 2 Aug 2004, Con Kolivas wrote: > > >>We have some results that need interpreting with contest. >>mem_load: >>Kernel [runs] Time CPU% Loads LCPU% Ratio >>2.6.8-rc2 4 78 146.2 94.5 4.7 1.30 >>2.6.8-rc2t 4 318 40.9 95.2 1.3 5.13 >> >>The "load" with mem_load is basically trying to allocate 110% of free >>ram, so the number of "loads" although similar is not a true indication >>of how much ram was handed out to mem_load. What is interesting is that >>since mem_load runs continuously and constantly asks for too much ram it >>seems to be receiving the token most frequently in preference to the cc >>processes which are short lived. I'd say it is quite hard to say >>convincingly that this is bad because the point of this patch is to >>prevent swap thrash. > > > It may be worth trying with a shorter token timeout > time - maybe even keeping the long ineligibility ? Give them a "refractory" bit which is set if they take the token? Next time they try to take the token unset the refractory bit instead of taking the token. Con --------------enig4C644E89477BFD81916572FB 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 iD8DBQFBDc2EZUg7+tp6mRURAjZ9AJ0dLz6gFReyR6FrEfEqiay8L33w5wCfdLRp 4QAEylVs6GCLbCZAyaRm4u0= =tu9e -----END PGP SIGNATURE----- --------------enig4C644E89477BFD81916572FB-- -- 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