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Message-Id: <20080102224144.885671949@redhat.com> Date: Wed, 02 Jan 2008 17:41:44 -0500 From: linux-kernel@...r.kernel.org To: unlisted-recipients:; (no To-header on input) Cc: linux-mm@...ck.org, lee.schermerhorn@...com Subject: [patch 00/19] VM pageout scalability improvements On large memory systems, the VM can spend way too much time scanning through pages that it cannot (or should not) evict from memory. Not only does it use up CPU time, but it also provokes lock contention and can leave large systems under memory presure in a catatonic state. Against 2.6.24-rc6-mm1 This patch series improves VM scalability by: 1) making the locking a little more scalable 2) putting filesystem backed, swap backed and non-reclaimable pages onto their own LRUs, so the system only scans the pages that it can/should evict from memory 3) switching to SEQ replacement for the anonymous LRUs, so the number of pages that need to be scanned when the system starts swapping is bound to a reasonable number The noreclaim patches come verbatim from Lee Schermerhorn and Nick Piggin. I have made a few small fixes to them and left out the bits that are no longer needed with split file/anon lists. The exception is "Scan noreclaim list for reclaimable pages", which should not be needed but could be a useful debugging tool. -- All Rights Reversed -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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