From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wi0-f175.google.com (mail-wi0-f175.google.com [209.85.212.175]) by kanga.kvack.org (Postfix) with ESMTP id 5103682BEF for ; Sat, 8 Nov 2014 18:01:50 -0500 (EST) Received: by mail-wi0-f175.google.com with SMTP id ex7so7449991wid.8 for ; Sat, 08 Nov 2014 15:01:49 -0800 (PST) Received: from mail-wi0-x236.google.com (mail-wi0-x236.google.com. [2a00:1450:400c:c05::236]) by mx.google.com with ESMTPS id xv4si22261050wjb.167.2014.11.08.15.01.49 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Sat, 08 Nov 2014 15:01:49 -0800 (PST) Received: by mail-wi0-f182.google.com with SMTP id d1so7417462wiv.15 for ; Sat, 08 Nov 2014 15:01:49 -0800 (PST) From: Timofey Titovets Subject: [PATCH v2 0/3] KSM: Mark new vma for deduplication Date: Sun, 9 Nov 2014 02:01:40 +0300 Message-Id: <1415487703-1824-1-git-send-email-nefelim4ag@gmail.com> Sender: owner-linux-mm@kvack.org List-ID: To: linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: nefelim4ag@gmail.com, marco.antonio.780@gmail.com Good time of day List, this tiny series of patches implement feature for auto deduping all anonymous memory. mark_new_vma - new ksm sysfs interface Every time then new vma created and mark_new_vma set to 1, then will be vma marked as VM_MERGEABLE and added to ksm queue. This can produce small overheads (I have not catch any problems or slowdown) This is useful for: Android (CM) devs which implement ksm support with patching system. Users of tiny pc. Servers what not use KVM but use something very releated, like containers. For tests: I have tested it and it working very good. For testing apply it and enable ksm: echo 1 | sudo tee /sys/kernel/mm/ksm/run This show how much memory saved: echo $[$(cat /sys/kernel/mm/ksm/pages_shared)*$(getconf PAGE_SIZE)/1024 ]KB On my system i save ~1% of memory 26 Mb/2100 Mb (deduped)/(used) Timofey Titovets (3): KSM: Add auto flag new VMA as VM_MERGEABLE KSM: Add to sysfs - mark_new_vma KSM: Add config to control mark_new_vma include/linux/ksm.h | 39 +++++++++++++++++++++++++++++++++++++++ mm/Kconfig | 7 +++++++ mm/ksm.c | 39 ++++++++++++++++++++++++++++++++++++++- mm/mmap.c | 17 +++++++++++++++++ 4 files changed, 101 insertions(+), 1 deletion(-) -- 2.1.3 -- 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