From patchwork Fri Oct 21 19:42:09 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Juan Quintela X-Patchwork-Id: 9390011 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 2B6A660231 for ; Fri, 21 Oct 2016 19:43:31 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 175BB29FA7 for ; Fri, 21 Oct 2016 19:43:31 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0BFC72A26C; Fri, 21 Oct 2016 19:43:31 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 7F4BF29FA7 for ; Fri, 21 Oct 2016 19:43:30 +0000 (UTC) Received: from localhost ([::1]:34082 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bxfiz-0005Xa-Mk for patchwork-qemu-devel@patchwork.kernel.org; Fri, 21 Oct 2016 15:43:29 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:55419) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bxfi7-0005D6-UD for qemu-devel@nongnu.org; Fri, 21 Oct 2016 15:42:40 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bxfi6-0007We-J2 for qemu-devel@nongnu.org; Fri, 21 Oct 2016 15:42:35 -0400 Received: from mx1.redhat.com ([209.132.183.28]:37350) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1bxfi6-0007W7-B2 for qemu-devel@nongnu.org; Fri, 21 Oct 2016 15:42:34 -0400 Received: from int-mx11.intmail.prod.int.phx2.redhat.com (int-mx11.intmail.prod.int.phx2.redhat.com [10.5.11.24]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 8FEF431B329 for ; Fri, 21 Oct 2016 19:42:33 +0000 (UTC) Received: from emacs.mitica (ovpn-116-122.ams2.redhat.com [10.36.116.122]) by int-mx11.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u9LJgLre018033; Fri, 21 Oct 2016 15:42:32 -0400 From: Juan Quintela To: qemu-devel@nongnu.org Date: Fri, 21 Oct 2016 21:42:09 +0200 Message-Id: <1477078935-7182-8-git-send-email-quintela@redhat.com> In-Reply-To: <1477078935-7182-1-git-send-email-quintela@redhat.com> References: <1477078935-7182-1-git-send-email-quintela@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.24 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.29]); Fri, 21 Oct 2016 19:42:33 +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: [Qemu-devel] [PATCH 07/13] migration: create ram_multifd_page 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: amit.shah@redhat.com, dgilbert@redhat.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP The function still don't use multifd, but we have simplified ram_save_page, xbzrle and RDMA stuff is gone. We have added a new counter and a new flag for this type of pages. Signed-off-by: Juan Quintela --- hmp.c | 2 ++ include/migration/migration.h | 1 + migration/migration.c | 1 + migration/ram.c | 44 ++++++++++++++++++++++++++++++++++++++++++- qapi-schema.json | 4 +++- 5 files changed, 50 insertions(+), 2 deletions(-) diff --git a/hmp.c b/hmp.c index 54f9f03..17a0ee2 100644 --- a/hmp.c +++ b/hmp.c @@ -222,6 +222,8 @@ void hmp_info_migrate(Monitor *mon, const QDict *qdict) monitor_printf(mon, "postcopy request count: %" PRIu64 "\n", info->ram->postcopy_requests); } + monitor_printf(mon, "multifd: %" PRIu64 " pages\n", + info->ram->multifd); } if (info->has_disk) { diff --git a/include/migration/migration.h b/include/migration/migration.h index 0b455d6..afdc7ec 100644 --- a/include/migration/migration.h +++ b/include/migration/migration.h @@ -274,6 +274,7 @@ uint64_t xbzrle_mig_pages_transferred(void); uint64_t xbzrle_mig_pages_overflow(void); uint64_t xbzrle_mig_pages_cache_miss(void); double xbzrle_mig_cache_miss_rate(void); +uint64_t multifd_mig_pages_transferred(void); void ram_handle_compressed(void *host, uint8_t ch, uint64_t size); void ram_debug_dump_bitmap(unsigned long *todump, bool expected); diff --git a/migration/migration.c b/migration/migration.c index a4615f5..407e0c3 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -625,6 +625,7 @@ static void populate_ram_info(MigrationInfo *info, MigrationState *s) info->ram->mbps = s->mbps; info->ram->dirty_sync_count = s->dirty_sync_count; info->ram->postcopy_requests = s->postcopy_requests; + info->ram->multifd = multifd_mig_pages_transferred(); if (s->state != MIGRATION_STATUS_COMPLETED) { info->ram->remaining = ram_bytes_remaining(); diff --git a/migration/ram.c b/migration/ram.c index 0ea40eb..44b9380 100644 --- a/migration/ram.c +++ b/migration/ram.c @@ -68,6 +68,7 @@ static uint64_t bitmap_sync_count; #define RAM_SAVE_FLAG_XBZRLE 0x40 /* 0x80 is reserved in migration.h start with 0x100 next */ #define RAM_SAVE_FLAG_COMPRESS_PAGE 0x100 +#define RAM_SAVE_FLAG_MULTIFD_PAGE 0x200 static const uint8_t ZERO_TARGET_PAGE[TARGET_PAGE_SIZE]; @@ -148,6 +149,7 @@ typedef struct AccountingInfo { uint64_t dup_pages; uint64_t skipped_pages; uint64_t norm_pages; + uint64_t multifd_pages; uint64_t iterations; uint64_t xbzrle_bytes; uint64_t xbzrle_pages; @@ -218,6 +220,11 @@ uint64_t xbzrle_mig_pages_overflow(void) return acct_info.xbzrle_overflows; } +uint64_t multifd_mig_pages_transferred(void) +{ + return acct_info.multifd_pages; +} + /* This is the last block that we have visited serching for dirty pages */ static RAMBlock *last_seen_block; @@ -995,6 +1002,33 @@ static int ram_save_page(QEMUFile *f, PageSearchStatus *pss, return pages; } +static int ram_multifd_page(QEMUFile *f, PageSearchStatus *pss, + bool last_stage, uint64_t *bytes_transferred) +{ + int pages; + uint8_t *p; + RAMBlock *block = pss->block; + ram_addr_t offset = pss->offset; + + p = block->host + offset; + + if (block == last_sent_block) { + offset |= RAM_SAVE_FLAG_CONTINUE; + } + pages = save_zero_page(f, block, offset, p, bytes_transferred); + if (pages == -1) { + *bytes_transferred += + save_page_header(f, block, offset | RAM_SAVE_FLAG_MULTIFD_PAGE); + qemu_put_buffer(f, p, TARGET_PAGE_SIZE); + *bytes_transferred += TARGET_PAGE_SIZE; + pages = 1; + acct_info.norm_pages++; + acct_info.multifd_pages++; + } + + return pages; +} + static int do_compress_ram_page(QEMUFile *f, RAMBlock *block, ram_addr_t offset) { @@ -1432,6 +1466,8 @@ static int ram_save_target_page(MigrationState *ms, QEMUFile *f, res = ram_save_compressed_page(f, pss, last_stage, bytes_transferred); + } else if (migrate_multifd()) { + res = ram_multifd_page(f, pss, last_stage, bytes_transferred); } else { res = ram_save_page(f, pss, last_stage, bytes_transferred); @@ -2678,7 +2714,8 @@ static int ram_load(QEMUFile *f, void *opaque, int version_id) addr &= TARGET_PAGE_MASK; if (flags & (RAM_SAVE_FLAG_COMPRESS | RAM_SAVE_FLAG_PAGE | - RAM_SAVE_FLAG_COMPRESS_PAGE | RAM_SAVE_FLAG_XBZRLE)) { + RAM_SAVE_FLAG_COMPRESS_PAGE | RAM_SAVE_FLAG_XBZRLE | + RAM_SAVE_FLAG_MULTIFD_PAGE)) { RAMBlock *block = ram_block_from_stream(f, flags); host = host_from_ram_block_offset(block, addr); @@ -2753,6 +2790,11 @@ static int ram_load(QEMUFile *f, void *opaque, int version_id) break; } break; + + case RAM_SAVE_FLAG_MULTIFD_PAGE: + qemu_get_buffer(f, host, TARGET_PAGE_SIZE); + break; + case RAM_SAVE_FLAG_EOS: /* normal exit */ break; diff --git a/qapi-schema.json b/qapi-schema.json index b5c9a06..e5b3a84 100644 --- a/qapi-schema.json +++ b/qapi-schema.json @@ -405,6 +405,7 @@ # # @postcopy-requests: The number of page requests received from the destination # (since 2.7) +# @multifd: number of pages sent with multifd (since 2.8) # # Since: 0.14.0 ## @@ -413,7 +414,8 @@ 'duplicate': 'int', 'skipped': 'int', 'normal': 'int', 'normal-bytes': 'int', 'dirty-pages-rate' : 'int', 'mbps' : 'number', 'dirty-sync-count' : 'int', - 'postcopy-requests' : 'int' } } + 'postcopy-requests' : 'int', + 'multifd' : 'int'} } ## # @XBZRLECacheStats