From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx164.postini.com [74.125.245.164]) by kanga.kvack.org (Postfix) with SMTP id 4236A6B00A2 for ; Thu, 28 Jun 2012 08:57:11 -0400 (EDT) From: Andrea Arcangeli Subject: [PATCH 35/40] autonuma: boost khugepaged scanning rate Date: Thu, 28 Jun 2012 14:56:15 +0200 Message-Id: <1340888180-15355-36-git-send-email-aarcange@redhat.com> In-Reply-To: <1340888180-15355-1-git-send-email-aarcange@redhat.com> References: <1340888180-15355-1-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: Hillf Danton , Dan Smith , Peter Zijlstra , Linus Torvalds , Andrew Morton , Thomas Gleixner , Ingo Molnar , Paul Turner , Suresh Siddha , Mike Galbraith , "Paul E. McKenney" , Lai Jiangshan , Bharata B Rao , Lee Schermerhorn , Rik van Riel , Johannes Weiner , Srivatsa Vaddagiri , Christoph Lameter , 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 | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-) diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 4fcdaf7..bcaa8ac 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -573,6 +573,14 @@ static int __init hugepage_init(void) set_recommended_min_free_kbytes(); +#ifdef CONFIG_AUTONUMA + /* Hack, remove after THP native migration */ + if (num_possible_nodes() > 1) { + khugepaged_scan_sleep_millisecs = 100; + khugepaged_alloc_sleep_millisecs = 10000; + } +#endif + 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