From nobody Mon Feb 9 20:11:03 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com Return-Path: Received: from lists.gnu.org (209.51.188.17 [209.51.188.17]) by mx.zohomail.com with SMTPS id 1549459829856621.3665246327787; Wed, 6 Feb 2019 05:30:29 -0800 (PST) Received: from localhost ([127.0.0.1]:51039 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1grNHT-00038f-TY for importer@patchew.org; Wed, 06 Feb 2019 08:30:23 -0500 Received: from eggs.gnu.org ([209.51.188.92]:55067) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1grNBG-0006Wq-9l for qemu-devel@nongnu.org; Wed, 06 Feb 2019 08:23:58 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1grNBF-0007eZ-Jj for qemu-devel@nongnu.org; Wed, 06 Feb 2019 08:23:58 -0500 Received: from mx1.redhat.com ([209.132.183.28]:43220) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1grNBF-0007eT-Ef for qemu-devel@nongnu.org; Wed, 06 Feb 2019 08:23:57 -0500 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id C9BCF7F6C8 for ; Wed, 6 Feb 2019 13:23:56 +0000 (UTC) Received: from localhost.localdomain (unknown [10.36.118.4]) by smtp.corp.redhat.com (Postfix) with ESMTP id DC21061538; Wed, 6 Feb 2019 13:23:51 +0000 (UTC) From: Juan Quintela To: qemu-devel@nongnu.org Date: Wed, 6 Feb 2019 14:23:28 +0100 Message-Id: <20190206132331.1694-2-quintela@redhat.com> In-Reply-To: <20190206132331.1694-1-quintela@redhat.com> References: <20190206132331.1694-1-quintela@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.25]); Wed, 06 Feb 2019 13:23:56 +0000 (UTC) Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH 1/4] multifd: Change page count default to 128 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Laurent Vivier , Thomas Huth , Juan Quintela , Markus Armbruster , "Dr. David Alan Gilbert" , Paolo Bonzini Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" I haven't seend any problem about using 64 or 128. And it make much less contention on the locks. Just change it. Signed-off-by: Juan Quintela --- migration/migration.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/migration/migration.c b/migration/migration.c index ef1d53cde2..f673486679 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -81,7 +81,7 @@ /* The delay time (in ms) between two COLO checkpoints */ #define DEFAULT_MIGRATE_X_CHECKPOINT_DELAY (200 * 100) #define DEFAULT_MIGRATE_MULTIFD_CHANNELS 2 -#define DEFAULT_MIGRATE_MULTIFD_PAGE_COUNT 16 +#define DEFAULT_MIGRATE_MULTIFD_PAGE_COUNT 128 =20 /* Background transfer rate for postcopy, 0 means unlimited, note * that page requests can still exceed this limit. --=20 2.20.1