From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx125.postini.com [74.125.245.125]) by kanga.kvack.org (Postfix) with SMTP id 8E5786B00A9 for ; Wed, 3 Oct 2012 19:51:46 -0400 (EDT) From: Andrea Arcangeli Subject: [PATCH 31/33] autonuma: boost khugepaged scanning rate Date: Thu, 4 Oct 2012 01:51:13 +0200 Message-Id: <1349308275-2174-32-git-send-email-aarcange@redhat.com> In-Reply-To: <1349308275-2174-1-git-send-email-aarcange@redhat.com> References: <1349308275-2174-1-git-send-email-aarcange@redhat.com> Sender: owner-linux-mm@kvack.org List-ID: To: linux-kernel@vger.kernel.org, linux-mm@kvack.org Cc: Linus Torvalds , Andrew Morton , Peter Zijlstra , Ingo Molnar , Mel Gorman , Hugh Dickins , Rik van Riel , Johannes Weiner , Hillf Danton , Andrew Jones , Dan Smith , Thomas Gleixner , Paul Turner , Christoph Lameter , Suresh Siddha , Mike Galbraith , "Paul E. McKenney" , Lai Jiangshan , Bharata B Rao , Lee Schermerhorn , Srivatsa Vaddagiri , Alex Shi , Mauricio Faria de Oliveira , Konrad Rzeszutek Wilk , Don Morris , Benjamin Herrenschmidt Until THP native migration is implemented it's safer to boost khugepaged scanning rate because all memory migration are splitting the hugepages. So the regular rate of scanning becomes too low when lots of memory is migrated. Signed-off-by: Andrea Arcangeli --- mm/huge_memory.c | 6 ++++++ 1 files changed, 6 insertions(+), 0 deletions(-) diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 86db742..6856468 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -573,6 +573,12 @@ static int __init hugepage_init(void) set_recommended_min_free_kbytes(); + /* Hack, remove after THP native migration */ + if (autonuma_possible()) { + khugepaged_scan_sleep_millisecs = 100; + khugepaged_alloc_sleep_millisecs = 10000; + } + return 0; out: hugepage_exit_sysfs(hugepage_kobj); -- 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: email@kvack.org