From nobody Mon Feb 9 07:56:26 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.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=intel.com ARC-Seal: i=1; a=rsa-sha256; t=1615527209; cv=none; d=zohomail.com; s=zohoarc; b=Zwd4Cq/QYsQ7Q5+/wDuoEvoB5mH19bNtD25tUBfI07K+g2+bmnRRQDq6wWiB7UeW6nFD4IiN6l4k3BwjQe1NffWp/W1cZnggO/9G+CbNU4Ub06PThSvvHfYOMHeV5EJl0f6u/g5ZMaKHdWCNhsSNg3km06QcUrqLX7MsycdTfxs= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1615527209; h=Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:Message-ID:References:Sender:Subject:To; bh=Kai+Vh2ivdCH4ZV6xcUHLcUMNs8qqwz+UIeY6rpvnb4=; b=UnsmborwBaY+bwqOj5x796PckqA8bFwsp7FYLcgf9aCijJzEiZdJgj1ZwGN701E+PKwJqtqiJBhOFjxlPXl4GvBDiT8ZqcrEPJxFJi/P9KJTYm2F5kOj3Ekr0eWS+rPmmRG5uH0hfX4gmS4emDBkAlLyvYP0JWBa5v6MrTmauM0= ARC-Authentication-Results: i=1; mx.zohomail.com; spf=pass (zohomail.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 header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1615527209845910.1556649558208; Thu, 11 Mar 2021 21:33:29 -0800 (PST) Received: from localhost ([::1]:54750 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lKaQS-0006Qb-SA for importer@patchew.org; Fri, 12 Mar 2021 00:33:28 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:51696) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lKaIs-0005XX-AJ for qemu-devel@nongnu.org; Fri, 12 Mar 2021 00:25:38 -0500 Received: from mga05.intel.com ([192.55.52.43]:4921) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lKaIq-0006dL-FE for qemu-devel@nongnu.org; Fri, 12 Mar 2021 00:25:38 -0500 Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Mar 2021 21:25:35 -0800 Received: from unknown (HELO localhost.localdomain.bj.intel.com) ([10.240.192.103]) by fmsmga006.fm.intel.com with ESMTP; 11 Mar 2021 21:25:32 -0800 IronPort-SDR: ywDsrLWSWbEa2NPGHKkOLO1SHhjKr/k+yyllScBqKYCrPGhddBLhsW1mlfNYM18pgfrH6rVi4f L00G03aXyNSw== X-IronPort-AV: E=McAfee;i="6000,8403,9920"; a="273826929" X-IronPort-AV: E=Sophos;i="5.81,242,1610438400"; d="scan'208";a="273826929" IronPort-SDR: HRd8QW2IqSvwy/R9fyuquOlY7avoBeRnDWTS6zaGL29dCRxZcr9F1LGpICsf78SHGKckiryfmj 0nGC8QSmrenA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.81,242,1610438400"; d="scan'208";a="600481955" From: leirao To: chen.zhang@intel.com, lizhijian@cn.fujitsu.com, jasowang@redhat.com, quintela@redhat.com, dgilbert@redhat.com, pbonzini@redhat.com, lukasstraub2@web.de Subject: [PATCH v2 07/10] Reset the auto-converge counter at every checkpoint. Date: Fri, 12 Mar 2021 13:03:00 +0800 Message-Id: <1615525383-59071-8-git-send-email-lei.rao@intel.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1615525383-59071-1-git-send-email-lei.rao@intel.com> References: <1615525383-59071-1-git-send-email-lei.rao@intel.com> Received-SPF: pass (zohomail.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; Received-SPF: pass client-ip=192.55.52.43; envelope-from=lei.rao@intel.com; helo=mga05.intel.com X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, 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: "Rao, Lei" , qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: "Rao, Lei" if we don't reset the auto-converge counter, it will continue to run with COLO running, and eventually the system will hang due to the CPU throttle reaching DEFAULT_MIGRATE_MAX_CPU_THROTTLE. Signed-off-by: Lei Rao --- migration/colo.c | 4 ++++ migration/ram.c | 10 ++++++++++ migration/ram.h | 1 + 3 files changed, 15 insertions(+) diff --git a/migration/colo.c b/migration/colo.c index 1aaf316..723ffb8 100644 --- a/migration/colo.c +++ b/migration/colo.c @@ -459,6 +459,10 @@ static int colo_do_checkpoint_transaction(MigrationSta= te *s, if (ret < 0) { goto out; } + + if (migrate_auto_converge()) { + mig_throttle_counter_reset(); + } /* * Only save VM's live state, which not including device state. * TODO: We may need a timeout mechanism to prevent COLO process diff --git a/migration/ram.c b/migration/ram.c index 72143da..e795a8d 100644 --- a/migration/ram.c +++ b/migration/ram.c @@ -652,6 +652,16 @@ static void mig_throttle_guest_down(uint64_t bytes_dir= ty_period, } } =20 +void mig_throttle_counter_reset(void) +{ + RAMState *rs =3D ram_state; + + rs->time_last_bitmap_sync =3D qemu_clock_get_ms(QEMU_CLOCK_REALTIME); + rs->num_dirty_pages_period =3D 0; + rs->bytes_xfer_prev =3D ram_counters.transferred; + cpu_throttle_stop(); +} + /** * xbzrle_cache_zero_page: insert a zero page in the XBZRLE cache * diff --git a/migration/ram.h b/migration/ram.h index 6378bb3..3f78175 100644 --- a/migration/ram.h +++ b/migration/ram.h @@ -50,6 +50,7 @@ bool ramblock_is_ignored(RAMBlock *block); int xbzrle_cache_resize(uint64_t new_size, Error **errp); uint64_t ram_bytes_remaining(void); uint64_t ram_bytes_total(void); +void mig_throttle_counter_reset(void); =20 uint64_t ram_pagesize_summary(void); int ram_save_queue_pages(const char *rbname, ram_addr_t start, ram_addr_t = len); --=20 1.8.3.1