From patchwork Fri Sep 25 12:06:45 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Dr. David Alan Gilbert" X-Patchwork-Id: 304422 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=-11.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED autolearn=ham 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 BF508C4727D for ; Fri, 25 Sep 2020 12:17:58 +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 42B9221D7A for ; Fri, 25 Sep 2020 12:17:58 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="T+Ow4eFS" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 42B9221D7A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:42410 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kLmfk-0007Ec-VB for qemu-devel@archiver.kernel.org; Fri, 25 Sep 2020 08:17:56 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:38414) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kLmWJ-0003fZ-1Q for qemu-devel@nongnu.org; Fri, 25 Sep 2020 08:08:11 -0400 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:32654) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kLmWH-0004IX-0k for qemu-devel@nongnu.org; Fri, 25 Sep 2020 08:08:10 -0400 Dkim-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1601035688; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=C8kuCzwewug5ZS+IEH9Np5RTfbg3mae2wgdLl7KapEs=; b=T+Ow4eFSa/tP5nFz2SDTKdOu4lhdNgmfrL0pQcAK/73Tb4UEIaKBlpJBS//8+UMKUBdD/F 40OXVResaZGRL8YL8au4vL3BRc2WleMLGsSHn3rgcJCD7hVDGDZScDNEFyrohkNa+zJ3RK PZRnI0TUFqjrFrBZzfph3zyu5jHL6H0= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-130-4Nh1OWgDOa6u5ML4JSrMIA-1; Fri, 25 Sep 2020 08:08:05 -0400 X-MC-Unique: 4Nh1OWgDOa6u5ML4JSrMIA-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 8DE16186DD42; Fri, 25 Sep 2020 12:08:04 +0000 (UTC) Received: from dgilbert-t580.localhost (ovpn-114-177.ams2.redhat.com [10.36.114.177]) by smtp.corp.redhat.com (Postfix) with ESMTP id 67D2E73697; Fri, 25 Sep 2020 12:07:59 +0000 (UTC) From: "Dr. David Alan Gilbert (git)" To: qemu-devel@nongnu.org, zhengchuan@huawei.com, dovmurik@linux.vnet.ibm.com, hgcoin@gmail.com, zhangjiachen.jaycee@bytedance.com, lvivier@redhat.com, peterx@redhat.com, stefanha@redhat.com, vgoyal@redhat.com, jinyan12@huawei.com, ann.zhuangyanying@huawei.com Subject: [PULL 16/26] migration: increase max-bandwidth to 128 MiB/s (1 Gib/s) Date: Fri, 25 Sep 2020 13:06:45 +0100 Message-Id: <20200925120655.295142-17-dgilbert@redhat.com> In-Reply-To: <20200925120655.295142-1-dgilbert@redhat.com> References: <20200925120655.295142-1-dgilbert@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=dgilbert@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=63.128.21.124; envelope-from=dgilbert@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/25 01:07:33 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -32 X-Spam_score: -3.3 X-Spam_bar: --- X-Spam_report: (-3.3 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.199, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action 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: , Cc: quintela@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Laurent Vivier max-bandwidth is set by default to 32 MiB/s (256 Mib/s) since 2008 (5bb7910af031c). Most of the CPUs can dirty memory faster than that now, and this is clearly a problem with POWER where the page size is 64 kiB and not 4 KiB. Signed-off-by: Laurent Vivier Message-Id: <20200921144957.979989-1-lvivier@redhat.com> Reviewed-by: David Gibson Reviewed-by: Greg Kurz Reviewed-by: Dr. David Alan Gilbert Signed-off-by: Dr. David Alan Gilbert --- migration/migration.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/migration/migration.c b/migration/migration.c index 827f8be07d..de34c995af 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -57,7 +57,7 @@ #include "qemu/queue.h" #include "multifd.h" -#define MAX_THROTTLE (32 << 20) /* Migration transfer speed throttling */ +#define MAX_THROTTLE (128 << 20) /* Migration transfer speed throttling */ /* Amount of time to allocate to each "chunk" of bandwidth-throttled * data. */