From nobody Tue Feb 10 19:17:26 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 ARC-Seal: i=1; a=rsa-sha256; t=1591172013; cv=none; d=zohomail.com; s=zohoarc; b=Z3v8kXWnhJx1Sw1j3pCrS+b5nljVxcpH9EKV9vTwOoxKB2QSs4RDYHuo6BY6sdaipg783NtrrNtW8lN7wCkrnmLpUtFyxDb3LAJ/53vVE3QSoSBHDcqdCSpR4qqEfzafUwlkpUHCyGBi2UclIk6kO3m7ZLvYZH6vKKf1Hh/Vqa4= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1591172013; 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=oz2N8RA6R7Ja47FJ8eXB5Ai37TFkdH3HaDzYdXB01HQ=; b=Aitk6B7vOwar49UwinEQj7p0O8nR94VYTsmKWzv5gU9lHOiqsKFurlQKiYy8Uv6Svvpbfpv/CWESnzoH3Jr8tIoIJiadZvDb6Iz9j9Qie0Jc/jdillTDN70+yi000kBr+RrQDK0WGV1WUzRcYeE7PFsO2bORex7wqmd23gXKZA8= 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 Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1591172013941624.2536582445704; Wed, 3 Jun 2020 01:13:33 -0700 (PDT) Received: from localhost ([::1]:56756 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jgOWi-0006un-NV for importer@patchew.org; Wed, 03 Jun 2020 04:13:32 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:39548) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jgOTD-0000Yc-Fz for qemu-devel@nongnu.org; Wed, 03 Jun 2020 04:09:55 -0400 Received: from cmccmta2.chinamobile.com ([221.176.66.80]:55316) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jgOT9-0000EI-QI for qemu-devel@nongnu.org; Wed, 03 Jun 2020 04:09:55 -0400 Received: from spf.mail.chinamobile.com (unknown[172.16.121.15]) by rmmx-syy-dmz-app07-12007 (RichMail) with SMTP id 2ee75ed75ab7836-8b299; Wed, 03 Jun 2020 16:09:27 +0800 (CST) Received: from localhost.localdomain (unknown[112.25.154.146]) by rmsmtp-syy-appsvr08-12008 (RichMail) with SMTP id 2ee85ed75aae43e-6102a; Wed, 03 Jun 2020 16:09:27 +0800 (CST) X-RM-TRANSID: 2ee75ed75ab7836-8b299 X-RM-TagInfo: emlType=0 X-RM-SPAM-FLAG: 00000000 X-RM-TRANSID: 2ee85ed75aae43e-6102a From: Mao Zhongyi To: qemu-devel@nongnu.org Subject: [PATCH 9/9] migration/ram: calculate un/encoded_size only when needed. Date: Wed, 3 Jun 2020 16:09:04 +0800 Message-Id: <20200603080904.997083-10-maozhongyi@cmss.chinamobile.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200603080904.997083-1-maozhongyi@cmss.chinamobile.com> References: <20200603080904.997083-1-maozhongyi@cmss.chinamobile.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=221.176.66.80; envelope-from=maozhongyi@cmss.chinamobile.com; helo=cmccmta2.chinamobile.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/03 04:09:39 X-ACL-Warn: Detected OS = Linux 3.1-3.10 [fuzzy] X-Spam_score_int: -25 X-Spam_score: -2.6 X-Spam_bar: -- X-Spam_report: (-2.6 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_LOW=-0.7, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=_AUTOLEARN 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: Mao Zhongyi 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" Signed-off-by: Mao Zhongyi --- migration/ram.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/migration/ram.c b/migration/ram.c index 41cc530d9d..ca20030b64 100644 --- a/migration/ram.c +++ b/migration/ram.c @@ -910,14 +910,15 @@ static void migration_update_rates(RAMState *rs, int6= 4_t end_time) xbzrle_counters.cache_miss_rate =3D (double)(xbzrle_counters.cache= _miss - rs->xbzrle_cache_miss_prev) / page_count; rs->xbzrle_cache_miss_prev =3D xbzrle_counters.cache_miss; - unencoded_size =3D (xbzrle_counters.pages - rs->xbzrle_pages_prev)= * - TARGET_PAGE_SIZE; - encoded_size =3D xbzrle_counters.bytes - rs->xbzrle_bytes_prev; if (xbzrle_counters.pages =3D=3D rs->xbzrle_pages_prev) { xbzrle_counters.encoding_rate =3D 0; - } else if (!encoded_size) { + } else if (xbzrle_counters.bytes =3D=3D rs->xbzrle_bytes_prev) { xbzrle_counters.encoding_rate =3D UINT64_MAX; } else { + unencoded_size =3D (xbzrle_counters.pages - rs->xbzrle_pages_p= rev) * + TARGET_PAGE_SIZE; + encoded_size =3D xbzrle_counters.bytes - rs->xbzrle_bytes_prev; + xbzrle_counters.encoding_rate =3D unencoded_size / encoded_siz= e; } rs->xbzrle_pages_prev =3D xbzrle_counters.pages; --=20 2.17.1