From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx123.postini.com [74.125.245.123]) by kanga.kvack.org (Postfix) with SMTP id 7C4B66B0044 for ; Mon, 26 Mar 2012 14:57:10 -0400 (EDT) From: Andrea Arcangeli Subject: [PATCH 38/39] autonuma: boost khugepaged scanning rate Date: Mon, 26 Mar 2012 19:46:25 +0200 Message-Id: <1332783986-24195-39-git-send-email-aarcange@redhat.com> In-Reply-To: <1332783986-24195-1-git-send-email-aarcange@redhat.com> References: <1332783986-24195-1-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 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 017c0a3..b919c0c 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org