From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BDE07C433EF for ; Mon, 4 Jul 2022 01:10:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231403AbiGDBKL (ORCPT ); Sun, 3 Jul 2022 21:10:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39550 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232707AbiGDBJt (ORCPT ); Sun, 3 Jul 2022 21:09:49 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 698656305 for ; Sun, 3 Jul 2022 18:09:48 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 14B65B80BEB for ; Mon, 4 Jul 2022 01:09:47 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C230AC341C7; Mon, 4 Jul 2022 01:09:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1656896985; bh=XvLxCcphg7Y0ma/rnwd36G3fHRtThSYNWzRMtvwvR0U=; h=Date:To:From:Subject:From; b=FluUmZ0gV9dMSSSKZZPFqA048bfdBWoi2byKx82w23Cy2zhGbqOa+e8p1oR0Z8yGH ZK1gXFyBJ8pjtvmDQ7FZRXR2ce5anBo8Q/ateHNpBVcrSiN2/TUoglkokcBQG9j0DR +T9fqY8t/DBvP87NEV1oGpFVmZwSTyZqHDbwTXwQ= Date: Sun, 03 Jul 2022 18:09:45 -0700 To: mm-commits@vger.kernel.org, songmuchun@bytedance.com, kent.overstreet@gmail.com, hdanton@sina.com, dchinner@redhat.com, christophe.jaillet@wanadoo.fr, roman.gushchin@linux.dev, akpm@linux-foundation.org From: Andrew Morton Subject: [merged mm-stable] tools-add-memcg_shrinkerpy.patch removed from -mm tree Message-Id: <20220704010945.C230AC341C7@smtp.kernel.org> Precedence: bulk Reply-To: linux-kernel@vger.kernel.org List-ID: X-Mailing-List: mm-commits@vger.kernel.org The quilt patch titled Subject: tools: add memcg_shrinker.py has been removed from the -mm tree. Its filename was tools-add-memcg_shrinkerpy.patch This patch was dropped because it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Roman Gushchin Subject: tools: add memcg_shrinker.py Date: Tue, 31 May 2022 20:22:26 -0700 Add a simple tool which prints a sorted list of shrinker lists in the following format: (number of objects, shrinker name, cgroup). Example: $ ./memcg_shrinker.py -n 10 2090 sb-sysfs-26 /sys/fs/cgroup/system.slice 1809 sb-sysfs-26 /sys/fs/cgroup/system.slice/systemd-udevd.service 1044 sb-btrfs:vda2-24 /sys/fs/cgroup/system.slice/system-dbus\x2d:1.3\... 861 sb-btrfs:vda2-24 /sys/fs/cgroup/system.slice/system-dbus\x2d:1.3\... 804 sb-btrfs:vda2-24 /sys/fs/cgroup/system.slice 643 sb-btrfs:vda2-24 /sys/fs/cgroup/system.slice/firewalld.service 616 sb-cgroup2-30 /sys/fs/cgroup/init.scope 275 sb-sysfs-26 / 238 sb-proc-25 /sys/fs/cgroup/system.slice/systemd-journald.service 225 sb-proc-25 /sys/fs/cgroup/system.slice/abrtd.service Link: https://lkml.kernel.org/r/20220601032227.4076670-6-roman.gushchin@linux.dev Signed-off-by: Roman Gushchin Cc: Christophe JAILLET Cc: Dave Chinner Cc: Hillf Danton Cc: Kent Overstreet Cc: Muchun Song Signed-off-by: Andrew Morton --- tools/cgroup/memcg_shrinker.py | 71 +++++++++++++++++++++++++++++++ 1 file changed, 71 insertions(+) --- /dev/null +++ a/tools/cgroup/memcg_shrinker.py @@ -0,0 +1,71 @@ +#!/usr/bin/env python3 +# +# Copyright (C) 2022 Roman Gushchin +# Copyright (C) 2022 Meta + +import os +import argparse +import sys + + +def scan_cgroups(cgroup_root): + cgroups = {} + + for root, subdirs, _ in os.walk(cgroup_root): + for cgroup in subdirs: + path = os.path.join(root, cgroup) + ino = os.stat(path).st_ino + cgroups[ino] = path + + # (memcg ino, path) + return cgroups + + +def scan_shrinkers(shrinker_debugfs): + shrinkers = [] + + for root, subdirs, _ in os.walk(shrinker_debugfs): + for shrinker in subdirs: + count_path = os.path.join(root, shrinker, "count") + with open(count_path) as f: + for line in f.readlines(): + items = line.split(' ') + ino = int(items[0]) + # (count, shrinker, memcg ino) + shrinkers.append((int(items[1]), shrinker, ino)) + return shrinkers + + +def main(): + parser = argparse.ArgumentParser(description='Display biggest shrinkers') + parser.add_argument('-n', '--lines', type=int, help='Number of lines to print') + + args = parser.parse_args() + + cgroups = scan_cgroups("/sys/fs/cgroup/") + shrinkers = scan_shrinkers("/sys/kernel/debug/shrinker/") + shrinkers = sorted(shrinkers, reverse = True, key = lambda x: x[0]) + + n = 0 + for s in shrinkers: + count, name, ino = (s[0], s[1], s[2]) + if count == 0: + break + + if ino == 0 or ino == 1: + cg = "/" + else: + try: + cg = cgroups[ino] + except KeyError: + cg = "unknown (%d)" % ino + + print("%-8s %-20s %s" % (count, name, cg)) + + n += 1 + if args.lines and n >= args.lines: + break + + +if __name__ == '__main__': + main() _ Patches currently in -mm which might be from roman.gushchin@linux.dev are mm-shrinkers-add-scan-interface-for-shrinker-debugfs.patch mm-memcontrol-do-not-miss-memcg_max-events-for-enforced-allocations.patch