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 DACFAC64ED8 for ; Mon, 27 Feb 2023 17:23:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229777AbjB0RXH (ORCPT ); Mon, 27 Feb 2023 12:23:07 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33374 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229633AbjB0RXE (ORCPT ); Mon, 27 Feb 2023 12:23:04 -0500 Received: from mail-yw1-x112f.google.com (mail-yw1-x112f.google.com [IPv6:2607:f8b0:4864:20::112f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2F10235B1 for ; Mon, 27 Feb 2023 09:22:53 -0800 (PST) Received: by mail-yw1-x112f.google.com with SMTP id 00721157ae682-536bf92b55cso194790807b3.12 for ; Mon, 27 Feb 2023 09:22:53 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=content-transfer-encoding:to:subject:message-id:date:from :in-reply-to:references:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=kTYModbuR59uTG8zS+hNzwQJ/9GBqPBIvenxOax1Cso=; b=BRbX7YidX86oPGQqKm8PfNLIDtGD5UMOuVUS6ca2zJd/iJo9olk+uOd3gMOLdYJ1n+ uv4dAYbAKZ6OvWilSgdGG9qqbk4t9v7yKyC4gq4xIKFaBF8urvkclYPhGSSQRskBb/Sm srRvcLEWJDF34310EiPMnEEhsepBlNF8fGdo7RpnLSxlNxbKlwOEHxj4lD743FqmSeBS U5qu9Em33YrENcu1ujFHNSqcTtD88Kh9QmD0gIZm/PVez+Y96kqLFxl9mRtV94FAzyIO 5DA7YEJptKOIfvIK28FNlMfn6NjxJW09FPV6Ouuznf6X3evlJxOWLuefpgmVhT8ddWIH LcNA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:to:subject:message-id:date:from :in-reply-to:references:mime-version:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=kTYModbuR59uTG8zS+hNzwQJ/9GBqPBIvenxOax1Cso=; b=zH47mOokB21qH9YKsP+0FjRs6ByM2nT9PjxetAFkJE0HqZe4HnHyn4bZIWUcJ3O+WQ b1q7uM93cZYDLHmjq+ubEzexEGVaBIKZ0kFdBqwi8NcfVTLreQiTMyb1n1t5G8sS+zTb xHczPt05uVt9PuKWUtFBA9sn2z+MUGI8ETo7utqmed1HnMPglNts17kDBh1OVe1nCi/H Ve+tUCrmzfA9grsGbszDoJOCbGmiry05LKYhJ7eimaORod509QWLHVYKp3M3CuPaXq5D G3TSe9jNE2z9wOM5yX6Qv/iq1CpFkIw/XWXGRLVHJ4M0JA1Qdt4POuHb0Hkchz1GRaiJ hw8A== X-Gm-Message-State: AO0yUKUiUlIXGeDxd3sAPxwUc2hq8XiGNEUynsSdY2gKQBu854/hvVQ/ ZYXM/bBpi+Yb+p2JAQKc5JbY3t5vME5yOxd4NQZXSA== X-Google-Smtp-Source: AK7set8fe0yfu+y/XLo8ATPIQLkQ8N9RTHMEBSne/gxsKyen3VnvkrfyF/SuP2kGzz2URTq5dmSg95f/8tSKHp0rjKQ= X-Received: by 2002:a81:b649:0:b0:530:bbd3:798b with SMTP id h9-20020a81b649000000b00530bbd3798bmr10565486ywk.0.1677518572008; Mon, 27 Feb 2023 09:22:52 -0800 (PST) MIME-Version: 1.0 References: <20230216051750.3125598-1-surenb@google.com> <20230224092134.30603-1-michalechner92@googlemail.com> <20230227165032.taj24j4leu7dlbqc@offworld> In-Reply-To: <20230227165032.taj24j4leu7dlbqc@offworld> From: Suren Baghdasaryan Date: Mon, 27 Feb 2023 09:22:40 -0800 Message-ID: Subject: Re: [PATCH v3 00/35] Per-VMA locks To: freak07 , surenb@google.com, akpm@linux-foundation.org, arjunroy@google.com, axelrasmussen@google.com, bigeasy@linutronix.de, chriscli@google.com, david@redhat.com, dhowells@redhat.com, edumazet@google.com, gthelen@google.com, gurua@google.com, hannes@cmpxchg.org, hughd@google.com, jannh@google.com, jglisse@google.com, joelaf@google.com, kent.overstreet@linux.dev, kernel-team@android.com, ldufour@linux.ibm.com, leewalsh@google.com, liam.howlett@oracle.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, lstoakes@gmail.com, luto@kernel.org, mgorman@techsingularity.net, mhocko@suse.com, michel@lespinasse.org, minchan@google.com, mingo@redhat.com, paulmck@kernel.org, peterjung1337@gmail.com, peterx@redhat.com, peterz@infradead.org, posk@google.com, punit.agrawal@bytedance.com, rientjes@google.com, rppt@kernel.org, shakeelb@google.com, soheil@google.com, songliubraving@fb.com, tatashin@google.com, vbabka@suse.cz, will@kernel.org, willy@infradead.org, x86@kernel.org Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Feb 27, 2023 at 9:19 AM Davidlohr Bueso wrote: > > On Fri, 24 Feb 2023, freak07 wrote: > > >Here are some measurements from a Pixel 7 Pro that=C2=B4s running a kern= el either with the Per-VMA locks patchset or without. > >If there=C2=B4s interest I can provide results of other specific apps as= well. > > > >Results are from consecutive cold app launches issued with "am start" co= mmand spawning the main activity of Slack Android app. > > > >https://docs.google.com/spreadsheets/d/1ktujfcyDmIJoQMWsoizGIE-0A_jMS9VM= w_seehUY9s0/edit?usp=3Dsharing > > > >There=C2=B4s quite a noticeable improvement, as can be seen in the graph= . The results were reproducible. > > Thanks for sharing. I am not surprised - after all, per-vma locks narrow = some of the performance gaps > between vanilla and speculative pfs, with less complexity (albeit this is= now a 35 patch series :). Yes, depending on the specific app we would expect some launch time improvement (in this case average improvement is 7%). Thanks for sharing the numbers! I'll be posting v4 today, which is a 33 patch series now, so a bit better := ) Thanks, Suren. > > Thanks, > Davidlohr >