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=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 378F3C433FF for ; Wed, 14 Aug 2019 14:57:46 +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 0CF9F2063F for ; Wed, 14 Aug 2019 14:57:46 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0CF9F2063F 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]:33128 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1hxuif-0004jY-9T for qemu-devel@archiver.kernel.org; Wed, 14 Aug 2019 10:57:45 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:35983) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1hxuf0-0003FN-3c for qemu-devel@nongnu.org; Wed, 14 Aug 2019 10:53:59 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hxuez-0006jQ-4O for qemu-devel@nongnu.org; Wed, 14 Aug 2019 10:53:58 -0400 Received: from mx1.redhat.com ([209.132.183.28]:38361) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hxuey-0006jL-VM for qemu-devel@nongnu.org; Wed, 14 Aug 2019 10:53:57 -0400 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 4589D3003A49 for ; Wed, 14 Aug 2019 14:53:56 +0000 (UTC) Received: from work-vm (ovpn-117-212.ams2.redhat.com [10.36.117.212]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 91C39806BE; Wed, 14 Aug 2019 14:53:55 +0000 (UTC) Date: Wed, 14 Aug 2019 15:53:53 +0100 From: "Dr. David Alan Gilbert" To: Juan Quintela Message-ID: <20190814145353.GL2920@work-vm> References: <20190814020218.1868-1-quintela@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190814020218.1868-1-quintela@redhat.com> User-Agent: Mutt/1.12.1 (2019-06-15) X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.42]); Wed, 14 Aug 2019 14:53:56 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: Re: [Qemu-devel] [PATCH 0/6] Fix multifd with big number of channels 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: qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" * Juan Quintela (quintela@redhat.com) wrote: > Hi > > When we have much more channels than cpus, we end having failures when > writting to sockets. This series: > - add some traces > - fix some of the trouble with serialization of creating the > threads/channels in proper order. > - Ask for help with the last patch. See documentation there. > > Please, review. patchew is reporting a failure that looks like it came from one of these; but I'm not sure which one yet! > > Juan Quintela (6): > migration: Add traces for multifd terminate threads > migration: Make global sem_sync semaphore by channel > migration: Make sure that all multifd channels have been created > migration: Make multifd threads wait until all have been created > migration: add some multifd traces > RFH: We lost "connect" events > > migration/ram.c | 60 +++++++++++++++++++++++++++++++++++------- > migration/trace-events | 8 ++++++ > 2 files changed, 59 insertions(+), 9 deletions(-) > > -- > 2.21.0 > -- Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK