From nobody Thu Nov 6 16:22:44 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zoho.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1489409315657144.66828282845904; Mon, 13 Mar 2017 05:48:35 -0700 (PDT) Received: from localhost ([::1]:51901 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cnPOo-0006bO-DL for importer@patchew.org; Mon, 13 Mar 2017 08:48:30 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:56459) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cnPLG-0004L7-1Q for qemu-devel@nongnu.org; Mon, 13 Mar 2017 08:44:54 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cnPLD-0005sp-Nu for qemu-devel@nongnu.org; Mon, 13 Mar 2017 08:44:50 -0400 Received: from mx1.redhat.com ([209.132.183.28]:46170) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1cnPLD-0005sI-F4 for qemu-devel@nongnu.org; Mon, 13 Mar 2017 08:44:47 -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 969CE7712 for ; Mon, 13 Mar 2017 12:44:47 +0000 (UTC) Received: from secure.mitica (ovpn-117-36.ams2.redhat.com [10.36.117.36]) by int-mx11.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id v2DCiaPw012445; Mon, 13 Mar 2017 08:44:46 -0400 From: Juan Quintela To: qemu-devel@nongnu.org Date: Mon, 13 Mar 2017 13:44:24 +0100 Message-Id: <20170313124434.1043-7-quintela@redhat.com> In-Reply-To: <20170313124434.1043-1-quintela@redhat.com> References: <20170313124434.1043-1-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 [10.5.110.38]); Mon, 13 Mar 2017 12:44:47 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH 06/16] migration: Create x-multifd-threads parameter 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+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Indicates the number of threads that we would create. By default we create 2 threads. Signed-off-by: Juan Quintela Reviewed-by: Dr. David Alan Gilbert -- Catch inconsistent defaults. Thanks Eric Signed-off-by: Juan Quintela --- hmp.c | 8 ++++++++ include/migration/migration.h | 2 ++ migration/migration.c | 23 +++++++++++++++++++++++ qapi-schema.json | 13 +++++++++++-- 4 files changed, 44 insertions(+), 2 deletions(-) diff --git a/hmp.c b/hmp.c index 261843f..7d6db63 100644 --- a/hmp.c +++ b/hmp.c @@ -323,6 +323,9 @@ void hmp_info_migrate_parameters(Monitor *mon, const QD= ict *qdict) monitor_printf(mon, " %s: %" PRId64, MigrationParameter_lookup[MIGRATION_PARAMETER_X_CHECKPOINT_DEL= AY], params->x_checkpoint_delay); + monitor_printf(mon, " %s: %" PRId64, + MigrationParameter_lookup[MIGRATION_PARAMETER_X_MULTIFD_THREAD= S], + params->x_multifd_threads); monitor_printf(mon, "\n"); } =20 @@ -1400,6 +1403,10 @@ void hmp_migrate_set_parameter(Monitor *mon, const Q= Dict *qdict) p.has_x_checkpoint_delay =3D true; use_int_value =3D true; break; + case MIGRATION_PARAMETER_X_MULTIFD_THREADS: + p.has_x_multifd_threads =3D true; + use_int_value =3D true; + break; } =20 if (use_int_value) { @@ -1417,6 +1424,7 @@ void hmp_migrate_set_parameter(Monitor *mon, const QD= ict *qdict) p.cpu_throttle_increment =3D valueint; p.downtime_limit =3D valueint; p.x_checkpoint_delay =3D valueint; + p.x_multifd_threads =3D valueint; } =20 qmp_migrate_set_parameters(&p, &err); diff --git a/include/migration/migration.h b/include/migration/migration.h index d48934b..2950270 100644 --- a/include/migration/migration.h +++ b/include/migration/migration.h @@ -265,6 +265,8 @@ bool migration_in_postcopy(MigrationState *); bool migration_in_postcopy_after_devices(MigrationState *); MigrationState *migrate_get_current(void); =20 +int migrate_multifd_threads(void); + void migrate_compress_threads_create(void); void migrate_compress_threads_join(void); void migrate_decompress_threads_create(void); diff --git a/migration/migration.c b/migration/migration.c index 0e5b0bf..cc9440b 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -71,6 +71,7 @@ * Note: Please change this default value to 10000 when we support hybrid = mode. */ #define DEFAULT_MIGRATE_X_CHECKPOINT_DELAY 200 +#define DEFAULT_MIGRATE_MULTIFD_THREADS 2 =20 static NotifierList migration_state_notifiers =3D NOTIFIER_LIST_INITIALIZER(migration_state_notifiers); @@ -105,6 +106,7 @@ MigrationState *migrate_get_current(void) .max_bandwidth =3D MAX_THROTTLE, .downtime_limit =3D DEFAULT_MIGRATE_SET_DOWNTIME, .x_checkpoint_delay =3D DEFAULT_MIGRATE_X_CHECKPOINT_DELAY, + .x_multifd_threads =3D DEFAULT_MIGRATE_MULTIFD_THREADS, }, }; =20 @@ -596,6 +598,8 @@ MigrationParameters *qmp_query_migrate_parameters(Error= **errp) params->downtime_limit =3D s->parameters.downtime_limit; params->has_x_checkpoint_delay =3D true; params->x_checkpoint_delay =3D s->parameters.x_checkpoint_delay; + params->has_x_multifd_threads =3D true; + params->x_multifd_threads =3D s->parameters.x_multifd_threads; =20 return params; } @@ -860,6 +864,13 @@ void qmp_migrate_set_parameters(MigrationParameters *p= arams, Error **errp) "x_checkpoint_delay", "is invalid, it should be positive"); } + if (params->has_x_multifd_threads && + (params->x_multifd_threads < 1 || params->x_multifd_threads > 255)= ) { + error_setg(errp, QERR_INVALID_PARAMETER_VALUE, + "multifd_threads", + "is invalid, it should be in the range of 1 to 255"); + return; + } =20 if (params->has_compress_level) { s->parameters.compress_level =3D params->compress_level; @@ -901,6 +912,9 @@ void qmp_migrate_set_parameters(MigrationParameters *pa= rams, Error **errp) colo_checkpoint_notify(s); } } + if (params->has_x_multifd_threads) { + s->parameters.x_multifd_threads =3D params->x_multifd_threads; + } } =20 =20 @@ -1418,6 +1432,15 @@ bool migrate_use_multifd(void) return s->enabled_capabilities[MIGRATION_CAPABILITY_X_MULTIFD]; } =20 +int migrate_multifd_threads(void) +{ + MigrationState *s; + + s =3D migrate_get_current(); + + return s->parameters.x_multifd_threads; +} + int migrate_use_xbzrle(void) { MigrationState *s; diff --git a/qapi-schema.json b/qapi-schema.json index d21934b..b7cb26d 100644 --- a/qapi-schema.json +++ b/qapi-schema.json @@ -985,13 +985,17 @@ # @x-checkpoint-delay: The delay time (in ms) between two COLO checkpoints= in # periodic mode. (Since 2.8) # +# @x-multifd-threads: Number of threads used to migrate data in parallel +# The default value is 2 (since 2.9) +# # Since: 2.4 ## { 'enum': 'MigrationParameter', 'data': ['compress-level', 'compress-threads', 'decompress-threads', 'cpu-throttle-initial', 'cpu-throttle-increment', 'tls-creds', 'tls-hostname', 'max-bandwidth', - 'downtime-limit', 'x-checkpoint-delay' ] } + 'downtime-limit', 'x-checkpoint-delay', + 'x-multifd-threads'] } =20 ## # @migrate-set-parameters: @@ -1054,6 +1058,10 @@ # # @x-checkpoint-delay: the delay time between two COLO checkpoints. (Since= 2.8) # +# +# @x-multifd-threads: Number of threads used to migrate data in parallel +# The default value is 2 (since 2.9) +# # Since: 2.4 ## { 'struct': 'MigrationParameters', @@ -1066,7 +1074,8 @@ '*tls-hostname': 'str', '*max-bandwidth': 'int', '*downtime-limit': 'int', - '*x-checkpoint-delay': 'int'} } + '*x-checkpoint-delay': 'int', + '*x-multifd-threads': 'int'} } =20 ## # @query-migrate-parameters: --=20 2.9.3