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 X-Spam-Level: X-Spam-Status: No, score=-0.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,HTML_MESSAGE,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 274E0C43603 for ; Tue, 17 Dec 2019 12:14:48 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id E512E2082E for ; Tue, 17 Dec 2019 12:14:47 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="o3RGHNwW" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E512E2082E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:39628 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ihBkV-0005Ww-4I for qemu-devel@archiver.kernel.org; Tue, 17 Dec 2019 07:14:47 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:39232) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ihBju-00054p-Kz for qemu-devel@nongnu.org; Tue, 17 Dec 2019 07:14:11 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ihBjt-00084I-Mo for qemu-devel@nongnu.org; Tue, 17 Dec 2019 07:14:10 -0500 Received: from mail-io1-xd29.google.com ([2607:f8b0:4864:20::d29]:37349) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1ihBjt-00083Z-G4 for qemu-devel@nongnu.org; Tue, 17 Dec 2019 07:14:09 -0500 Received: by mail-io1-xd29.google.com with SMTP id k24so9077580ioc.4 for ; Tue, 17 Dec 2019 04:14:09 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=tonbqllWohf8UCmcVQIAyMXTjQy6DDVwfdYqJkUhvNQ=; b=o3RGHNwW62HKlE8SEnJQAavE62f1tcYHAqKXTUe62dgtJApKcsDbiIMoZa+L24f2ts 6FNOHZQVc8n0UeUviHOM/m8J41z2DgNpvDt2o+3nS8BPGuudrUrYWUtOPZ5lIXvil1Wj ZqeY8QV2uaPtg/xbxjgqtA6HeXVxcp6JHKyJKenPeAgX3vxORnJxga57DEcoMDyC+ic1 BDith5Dbbu5+4CeR65x+wXvj02Kasqyibcl4GCCj9q6oOaugDZmNqi1zixzcAf3VyKfd pe8X8LPkvaGBeyjUcw+dYfoyu9QLF0QN0lkwS3IzoU+/NJq2YUu6bylYbxZTfYbnEx9T niBQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=tonbqllWohf8UCmcVQIAyMXTjQy6DDVwfdYqJkUhvNQ=; b=TVEzapyzjd1lSdsCil7oyVI3g7oj55FpiXzGtRsh8QIQFWmF55MZMkZkk6pjQuIciu J58y3N4f0IKQv28ajf6/SoEllHkslj+t0g/aFUQr7y8LAyvLBhq4mVjMEVWIXT+c+heN wUqkQ64TMcBfGdZL7QLNWaC8eHZfvyOIg5rUsH5zZTQaV8oQ58eij809op9nrzuk7jou pfTutv8C2ZdaVWOTh6ngmsO1YUhNvSjCJB8uIohT0d2iIrVIvs4Fq01jN0fQE6nluE8S t8AI7zOE+3C7QTejLbOp8S8zZcbnxc/k4gv+X0yuvuxeOCjxnUue3pvNKs1t3xkLT9Rf z1Ww== X-Gm-Message-State: APjAAAWPbSQ4XX69IC9wgMeZAD+Vv6naRGXarMr+rM1xrq9QXNLihCkx Z47o5E1drKXHF4U5emwuJxDBwr7nJGPs7IbojJFG4NGC X-Google-Smtp-Source: APXvYqwtD+Zj5ip8gAY9Of+QwHkHZkzlzb6oMH8lCa1b0AxqA7l/JWSZmjgjJ6wXG3np3ydIy/YAyoL9g3LvrpLb4Ds= X-Received: by 2002:a5d:9512:: with SMTP id d18mr3370196iom.85.1576584847965; Tue, 17 Dec 2019 04:14:07 -0800 (PST) MIME-Version: 1.0 From: "jack.chen" Date: Tue, 17 Dec 2019 20:13:57 +0800 Message-ID: Subject: os_mem_prealloc questions To: qemu Content-Type: multipart/alternative; boundary="000000000000d24b630599e543b4" X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::d29 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" --000000000000d24b630599e543b4 Content-Type: text/plain; charset="UTF-8" hello: I found os_mem_prealloc prealloc memory by multiple threads ,and max threads number is 16,I want do know the reason,why do not use smp_cpus? (in fact,I also found smp_cpus can not reduce more start time,I just want to know the reasion) thanks! --000000000000d24b630599e543b4 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
hello:
=C2=A0 =C2=A0 =C2=A0I found=C2=A0os_mem_preallo= c prealloc memory by multiple=C2=A0threads ,and max threads number is 16,I = want do know the reason,why do not use smp_cpus?=C2=A0
(in fact,I also = found smp_cpus can not reduce more start time,I just want to know the reasi= on)
=C2=A0 =C2=A0 =C2= =A0thanks!
<= /blockquote>
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