From patchwork Mon Sep 9 14:25:37 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yong Huang X-Patchwork-Id: 13797182 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id DAA4BECE57E for ; Mon, 9 Sep 2024 14:27:27 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1snfLG-0001M8-PX; Mon, 09 Sep 2024 10:26:10 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1snfLF-0001Fc-DO for qemu-devel@nongnu.org; Mon, 09 Sep 2024 10:26:09 -0400 Received: from mail-oi1-x22f.google.com ([2607:f8b0:4864:20::22f]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1snfLD-0004U1-MC for qemu-devel@nongnu.org; Mon, 09 Sep 2024 10:26:09 -0400 Received: by mail-oi1-x22f.google.com with SMTP id 5614622812f47-3e033e66a31so1521596b6e.0 for ; Mon, 09 Sep 2024 07:26:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=smartx-com.20230601.gappssmtp.com; s=20230601; t=1725891966; x=1726496766; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=A4+6JdQYvda/1Hm0Qzqic1h3nzIQOs1z0LtM+uvLl5s=; b=uhnqUVhsAthcEiwJUVBVWETejxaOcKdm/BU33CZJzDMZcpohdMmpwamR9CziX6twRb bZj1evOzyXB1w9EJbIazl3TSHDWKZ4VPKcDkhqd79Jovlra4RxfgjWxJI+LxJD+2NYNm X+WEb9zRDdxMgQYg4krn2J6PtaI24vktYUi5s/zAFxFrzbWO8LQfSjj6MgceidchdbWr nNnuudeskXIODWaKZU0fRV7dBMa6QTycekAU8PjpemRuwKAd9dKJCpc9DCVElhb9hACu DPsnnHQbivVa5s8WTk69wSbKgRxsy9pb4bXqC3ARBVu0gt6bQS6Fmi9FZnn5udUBaxIW 4jQA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1725891966; x=1726496766; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=A4+6JdQYvda/1Hm0Qzqic1h3nzIQOs1z0LtM+uvLl5s=; b=ar3ppsClkDErwg+I1eR7uQB/cjYjHQslr/vY+2Uiu2MZO0QDeNrtzH3s/hDa8W5f5Z dp+BArZJ9n2X3YhJnPpuD6AbIRRTO4QSB4Ayhs12Mrd/033KpsOvJtOaHLorfbed3P10 MJKELAbGRZnU0cDhmBAcBL3/4S70EV+L44rizkw+49VdgtunOqZZkmRKgEu8awAOGG7t C+33KpB2k48g3V6+OJwfNM27tuaKm6pMWjfvD3XQQ5vJH8VJV6axClbyUvaeBcSlcsaw rNbJlk/6okGrD9to5qS/pDhThbE/T6BFNCqzNqx+xJyNQDwNHk7rQoLy3XpTVf+sqp10 nQ1g== X-Gm-Message-State: AOJu0YwfTbGvharxwnmYe5U7DDLUTrzI+HQOhuBNv3S+Az6uS2lNMg6r +2uMTZwofvMOsynpm2Y8NRscIdX3kSi21WnWDp/Y+f/YeSfiNalneUSWITk/azb76gw0V7xiY37 GTf0vlQ== X-Google-Smtp-Source: AGHT+IH76pZoBbETP32Ke1fH3vmV1055l/ejb7q4fQ43imhs6kNFFnvibA9y9NCOnvzO5+Luij3Fow== X-Received: by 2002:a05:6870:9f08:b0:277:e641:5659 with SMTP id 586e51a60fabf-27b9daecd2cmr3397826fac.35.1725891965569; Mon, 09 Sep 2024 07:26:05 -0700 (PDT) Received: from localhost.localdomain ([118.114.94.226]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-718e58b2a88sm3561164b3a.46.2024.09.09.07.26.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Sep 2024 07:26:05 -0700 (PDT) From: Hyman Huang To: qemu-devel@nongnu.org Cc: Peter Xu , Fabiano Rosas , Eric Blake , Markus Armbruster , David Hildenbrand , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Paolo Bonzini , yong.huang@smartx.com Subject: [PATCH RESEND RFC 04/10] qapi/migration: Introduce the iteration-count Date: Mon, 9 Sep 2024 22:25:37 +0800 Message-Id: <9f16a57bd430fd99807a57454780c7e0a90e739c.1725891841.git.yong.huang@smartx.com> X-Mailer: git-send-email 2.39.1 In-Reply-To: References: MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::22f; envelope-from=yong.huang@smartx.com; helo=mail-oi1-x22f.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, 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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org The original migration information dirty-sync-count could no longer reflect iteration count due to the introduction of periodic synchronization in the next commit; add the iteration count to compensate. Signed-off-by: Hyman Huang --- migration/migration-stats.h | 4 ++++ migration/migration.c | 1 + migration/ram.c | 12 ++++++++---- qapi/migration.json | 6 +++++- tests/qtest/migration-test.c | 2 +- 5 files changed, 19 insertions(+), 6 deletions(-) diff --git a/migration/migration-stats.h b/migration/migration-stats.h index 05290ade76..43ee0f4f05 100644 --- a/migration/migration-stats.h +++ b/migration/migration-stats.h @@ -50,6 +50,10 @@ typedef struct { * Number of times we have synchronized guest bitmaps. */ Stat64 dirty_sync_count; + /* + * Number of migration iteration processed. + */ + Stat64 iteration_count; /* * Number of times zero copy failed to send any page using zero * copy. diff --git a/migration/migration.c b/migration/migration.c index 3dea06d577..055d527ff6 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -1197,6 +1197,7 @@ static void populate_ram_info(MigrationInfo *info, MigrationState *s) info->ram->mbps = s->mbps; info->ram->dirty_sync_count = stat64_get(&mig_stats.dirty_sync_count); + info->ram->iteration_count = stat64_get(&mig_stats.iteration_count); info->ram->dirty_sync_missed_zero_copy = stat64_get(&mig_stats.dirty_sync_missed_zero_copy); info->ram->postcopy_requests = diff --git a/migration/ram.c b/migration/ram.c index a56634eb46..23471c9e5a 100644 --- a/migration/ram.c +++ b/migration/ram.c @@ -594,7 +594,7 @@ static void xbzrle_cache_zero_page(ram_addr_t current_addr) /* We don't care if this fails to allocate a new cache page * as long as it updated an old one */ cache_insert(XBZRLE.cache, current_addr, XBZRLE.zero_target_page, - stat64_get(&mig_stats.dirty_sync_count)); + stat64_get(&mig_stats.iteration_count)); } #define ENCODING_FLAG_XBZRLE 0x1 @@ -620,7 +620,7 @@ static int save_xbzrle_page(RAMState *rs, PageSearchStatus *pss, int encoded_len = 0, bytes_xbzrle; uint8_t *prev_cached_page; QEMUFile *file = pss->pss_channel; - uint64_t generation = stat64_get(&mig_stats.dirty_sync_count); + uint64_t generation = stat64_get(&mig_stats.iteration_count); if (!cache_is_cached(XBZRLE.cache, current_addr, generation)) { xbzrle_counters.cache_miss++; @@ -1075,6 +1075,10 @@ static void migration_bitmap_sync(RAMState *rs, RAMBlock *block; int64_t end_time; + if (!periodic) { + stat64_add(&mig_stats.iteration_count, 1); + } + stat64_add(&mig_stats.dirty_sync_count, 1); if (!rs->time_last_bitmap_sync) { @@ -1111,8 +1115,8 @@ static void migration_bitmap_sync(RAMState *rs, rs->num_dirty_pages_period = 0; rs->bytes_xfer_prev = migration_transferred_bytes(); } - if (migrate_events()) { - uint64_t generation = stat64_get(&mig_stats.dirty_sync_count); + if (!periodic && migrate_events()) { + uint64_t generation = stat64_get(&mig_stats.iteration_count); qapi_event_send_migration_pass(generation); } } diff --git a/qapi/migration.json b/qapi/migration.json index 8281d4a83b..6d8358c202 100644 --- a/qapi/migration.json +++ b/qapi/migration.json @@ -60,6 +60,9 @@ # between 0 and @dirty-sync-count * @multifd-channels. (since # 7.1) # +# @iteration-count: The number of iterations since migration started. +# (since 9.2) +# # Since: 0.14 ## { 'struct': 'MigrationStats', @@ -72,7 +75,8 @@ 'multifd-bytes': 'uint64', 'pages-per-second': 'uint64', 'precopy-bytes': 'uint64', 'downtime-bytes': 'uint64', 'postcopy-bytes': 'uint64', - 'dirty-sync-missed-zero-copy': 'uint64' } } + 'dirty-sync-missed-zero-copy': 'uint64', + 'iteration-count' : 'int' } } ## # @XBZRLECacheStats: diff --git a/tests/qtest/migration-test.c b/tests/qtest/migration-test.c index 9d08101643..2fb10658d4 100644 --- a/tests/qtest/migration-test.c +++ b/tests/qtest/migration-test.c @@ -278,7 +278,7 @@ static int64_t read_migrate_property_int(QTestState *who, const char *property) static uint64_t get_migration_pass(QTestState *who) { - return read_ram_property_int(who, "dirty-sync-count"); + return read_ram_property_int(who, "iteration-count"); } static void read_blocktime(QTestState *who)