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Thu, 27 Jun 2024 15:34:50 -0700 (PDT) From: Yichen Wang To: Paolo Bonzini , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , Eduardo Habkost , =?utf-8?q?Marc-Andr=C3=A9_Lureau?= , Thomas Huth , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Peter Xu , Fabiano Rosas , Eric Blake , Markus Armbruster , Laurent Vivier , qemu-devel@nongnu.org Cc: "Hao Xiang" , "Liu, Yuan1" , "Zou, Nanhai" , "Ho-Ren (Jack) Chuang" , Yichen Wang , Bryan Zhang Subject: [PATCH v3 2/4] migration: Add migration parameters for QATzip Date: Thu, 27 Jun 2024 15:34:43 -0700 Message-Id: <20240627223445.95096-3-yichen.wang@bytedance.com> X-Mailer: git-send-email 2.39.3 (Apple Git-146) In-Reply-To: <20240627223445.95096-1-yichen.wang@bytedance.com> References: <20240627223445.95096-1-yichen.wang@bytedance.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::434; envelope-from=yichen.wang@bytedance.com; helo=mail-pf1-x434.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-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 From: Bryan Zhang Adds support for migration parameters to control QATzip compression level and to enable/disable software fallback when QAT hardware is unavailable. This is a preparatory commit for a subsequent commit that will actually use QATzip compression. Signed-off-by: Bryan Zhang Signed-off-by: Hao Xiang Signed-off-by: Yichen Wang --- migration/migration-hmp-cmds.c | 8 +++++ migration/options.c | 57 ++++++++++++++++++++++++++++++++++ migration/options.h | 2 ++ qapi/migration.json | 35 +++++++++++++++++++++ 4 files changed, 102 insertions(+) diff --git a/migration/migration-hmp-cmds.c b/migration/migration-hmp-cmds.c index 7d608d26e1..664e2390a3 100644 --- a/migration/migration-hmp-cmds.c +++ b/migration/migration-hmp-cmds.c @@ -576,6 +576,14 @@ void hmp_migrate_set_parameter(Monitor *mon, const QDict *qdict) p->has_multifd_zlib_level = true; visit_type_uint8(v, param, &p->multifd_zlib_level, &err); break; + case MIGRATION_PARAMETER_MULTIFD_QATZIP_LEVEL: + p->has_multifd_qatzip_level = true; + visit_type_uint8(v, param, &p->multifd_qatzip_level, &err); + break; + case MIGRATION_PARAMETER_MULTIFD_QATZIP_SW_FALLBACK: + p->has_multifd_qatzip_sw_fallback = true; + visit_type_bool(v, param, &p->multifd_qatzip_sw_fallback, &err); + break; case MIGRATION_PARAMETER_MULTIFD_ZSTD_LEVEL: p->has_multifd_zstd_level = true; visit_type_uint8(v, param, &p->multifd_zstd_level, &err); diff --git a/migration/options.c b/migration/options.c index 645f55003d..334d70fb6d 100644 --- a/migration/options.c +++ b/migration/options.c @@ -55,6 +55,15 @@ #define DEFAULT_MIGRATE_MULTIFD_COMPRESSION MULTIFD_COMPRESSION_NONE /* 0: means nocompress, 1: best speed, ... 9: best compress ratio */ #define DEFAULT_MIGRATE_MULTIFD_ZLIB_LEVEL 1 +/* + * 1: best speed, ... 9: best compress ratio + * There is some nuance here. Refer to QATzip documentation to understand + * the mapping of QATzip levels to standard deflate levels. + */ +#define DEFAULT_MIGRATE_MULTIFD_QATZIP_LEVEL 1 +/* QATzip's SW fallback implementation is extremely slow, so avoid fallback */ +#define DEFAULT_MIGRATE_MULTIFD_QATZIP_SW_FALLBACK false + /* 0: means nocompress, 1: best speed, ... 20: best compress ratio */ #define DEFAULT_MIGRATE_MULTIFD_ZSTD_LEVEL 1 @@ -123,6 +132,12 @@ Property migration_properties[] = { DEFINE_PROP_UINT8("multifd-zlib-level", MigrationState, parameters.multifd_zlib_level, DEFAULT_MIGRATE_MULTIFD_ZLIB_LEVEL), + DEFINE_PROP_UINT8("multifd-qatzip-level", MigrationState, + parameters.multifd_qatzip_level, + DEFAULT_MIGRATE_MULTIFD_QATZIP_LEVEL), + DEFINE_PROP_BOOL("multifd-qatzip-sw-fallback", MigrationState, + parameters.multifd_qatzip_sw_fallback, + DEFAULT_MIGRATE_MULTIFD_QATZIP_SW_FALLBACK), DEFINE_PROP_UINT8("multifd-zstd-level", MigrationState, parameters.multifd_zstd_level, DEFAULT_MIGRATE_MULTIFD_ZSTD_LEVEL), @@ -787,6 +802,20 @@ int migrate_multifd_zlib_level(void) return s->parameters.multifd_zlib_level; } +int migrate_multifd_qatzip_level(void) +{ + MigrationState *s = migrate_get_current(); + + return s->parameters.multifd_qatzip_level; +} + +bool migrate_multifd_qatzip_sw_fallback(void) +{ + MigrationState *s = migrate_get_current(); + + return s->parameters.multifd_qatzip_sw_fallback; +} + int migrate_multifd_zstd_level(void) { MigrationState *s = migrate_get_current(); @@ -892,6 +921,11 @@ MigrationParameters *qmp_query_migrate_parameters(Error **errp) params->multifd_compression = s->parameters.multifd_compression; params->has_multifd_zlib_level = true; params->multifd_zlib_level = s->parameters.multifd_zlib_level; + params->has_multifd_qatzip_level = true; + params->multifd_qatzip_level = s->parameters.multifd_qatzip_level; + params->has_multifd_qatzip_sw_fallback = true; + params->multifd_qatzip_sw_fallback = + s->parameters.multifd_qatzip_sw_fallback; params->has_multifd_zstd_level = true; params->multifd_zstd_level = s->parameters.multifd_zstd_level; params->has_xbzrle_cache_size = true; @@ -946,6 +980,8 @@ void migrate_params_init(MigrationParameters *params) params->has_multifd_channels = true; params->has_multifd_compression = true; params->has_multifd_zlib_level = true; + params->has_multifd_qatzip_level = true; + params->has_multifd_qatzip_sw_fallback = true; params->has_multifd_zstd_level = true; params->has_xbzrle_cache_size = true; params->has_max_postcopy_bandwidth = true; @@ -1038,6 +1074,14 @@ bool migrate_params_check(MigrationParameters *params, Error **errp) return false; } + if (params->has_multifd_qatzip_level && + ((params->multifd_qatzip_level > 9) || + (params->multifd_qatzip_level < 1))) { + error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "multifd_qatzip_level", + "a value between 1 and 9"); + return false; + } + if (params->has_multifd_zstd_level && (params->multifd_zstd_level > 20)) { error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "multifd_zstd_level", @@ -1195,6 +1239,12 @@ static void migrate_params_test_apply(MigrateSetParameters *params, if (params->has_multifd_compression) { dest->multifd_compression = params->multifd_compression; } + if (params->has_multifd_qatzip_level) { + dest->multifd_qatzip_level = params->multifd_qatzip_level; + } + if (params->has_multifd_qatzip_sw_fallback) { + dest->multifd_qatzip_sw_fallback = params->multifd_qatzip_sw_fallback; + } if (params->has_multifd_zlib_level) { dest->multifd_zlib_level = params->multifd_zlib_level; } @@ -1315,6 +1365,13 @@ static void migrate_params_apply(MigrateSetParameters *params, Error **errp) if (params->has_multifd_compression) { s->parameters.multifd_compression = params->multifd_compression; } + if (params->has_multifd_qatzip_level) { + s->parameters.multifd_qatzip_level = params->multifd_qatzip_level; + } + if (params->has_multifd_qatzip_sw_fallback) { + s->parameters.multifd_qatzip_sw_fallback = + params->multifd_qatzip_sw_fallback; + } if (params->has_multifd_zlib_level) { s->parameters.multifd_zlib_level = params->multifd_zlib_level; } diff --git a/migration/options.h b/migration/options.h index a2397026db..24d98c6a29 100644 --- a/migration/options.h +++ b/migration/options.h @@ -78,6 +78,8 @@ uint64_t migrate_max_postcopy_bandwidth(void); int migrate_multifd_channels(void); MultiFDCompression migrate_multifd_compression(void); int migrate_multifd_zlib_level(void); +int migrate_multifd_qatzip_level(void); +bool migrate_multifd_qatzip_sw_fallback(void); int migrate_multifd_zstd_level(void); uint8_t migrate_throttle_trigger_threshold(void); const char *migrate_tls_authz(void); diff --git a/qapi/migration.json b/qapi/migration.json index 0f24206bce..8c9f2a8aa7 100644 --- a/qapi/migration.json +++ b/qapi/migration.json @@ -789,6 +789,16 @@ # speed, and 9 means best compression ratio which will consume # more CPU. Defaults to 1. (Since 5.0) # +# @multifd-qatzip-level: Set the compression level to be used in live +# migration. The level is an integer between 1 and 9, where 1 means +# the best compression speed, and 9 means the best compression +# ratio which will consume more CPU. Defaults to 1. (Since 9.1) +# +# @multifd-qatzip-sw-fallback: Enable software fallback if QAT hardware +# is unavailable. Defaults to false. Software fallback performance +# is very poor compared to regular zlib, so be cautious about +# enabling this option. (Since 9.1) +# # @multifd-zstd-level: Set the compression level to be used in live # migration, the compression level is an integer between 0 and 20, # where 0 means no compression, 1 means the best compression @@ -849,6 +859,7 @@ 'xbzrle-cache-size', 'max-postcopy-bandwidth', 'max-cpu-throttle', 'multifd-compression', 'multifd-zlib-level', 'multifd-zstd-level', + 'multifd-qatzip-level', 'multifd-qatzip-sw-fallback', 'block-bitmap-mapping', { 'name': 'x-vcpu-dirty-limit-period', 'features': ['unstable'] }, 'vcpu-dirty-limit', @@ -964,6 +975,16 @@ # speed, and 9 means best compression ratio which will consume # more CPU. Defaults to 1. (Since 5.0) # +# @multifd-qatzip-level: Set the compression level to be used in live +# migration. The level is an integer between 1 and 9, where 1 means +# the best compression speed, and 9 means the best compression +# ratio which will consume more CPU. Defaults to 1. (Since 9.1) +# +# @multifd-qatzip-sw-fallback: Enable software fallback if QAT hardware +# is unavailable. Defaults to false. Software fallback performance +# is very poor compared to regular zlib, so be cautious about +# enabling this option. (Since 9.1) +# # @multifd-zstd-level: Set the compression level to be used in live # migration, the compression level is an integer between 0 and 20, # where 0 means no compression, 1 means the best compression @@ -1037,6 +1058,8 @@ '*max-cpu-throttle': 'uint8', '*multifd-compression': 'MultiFDCompression', '*multifd-zlib-level': 'uint8', + '*multifd-qatzip-level': 'uint8', + '*multifd-qatzip-sw-fallback': 'bool', '*multifd-zstd-level': 'uint8', '*block-bitmap-mapping': [ 'BitmapMigrationNodeAlias' ], '*x-vcpu-dirty-limit-period': { 'type': 'uint64', @@ -1168,6 +1191,16 @@ # speed, and 9 means best compression ratio which will consume # more CPU. Defaults to 1. (Since 5.0) # +# @multifd-qatzip-level: Set the compression level to be used in live +# migration. The level is an integer between 1 and 9, where 1 means +# the best compression speed, and 9 means the best compression +# ratio which will consume more CPU. Defaults to 1. (Since 9.1) +# +# @multifd-qatzip-sw-fallback: Enable software fallback if QAT hardware +# is unavailable. Defaults to false. Software fallback performance +# is very poor compared to regular zlib, so be cautious about +# enabling this option. (Since 9.1) +# # @multifd-zstd-level: Set the compression level to be used in live # migration, the compression level is an integer between 0 and 20, # where 0 means no compression, 1 means the best compression @@ -1238,6 +1271,8 @@ '*max-cpu-throttle': 'uint8', '*multifd-compression': 'MultiFDCompression', '*multifd-zlib-level': 'uint8', + '*multifd-qatzip-level': 'uint8', + '*multifd-qatzip-sw-fallback': 'bool', '*multifd-zstd-level': 'uint8', '*block-bitmap-mapping': [ 'BitmapMigrationNodeAlias' ], '*x-vcpu-dirty-limit-period': { 'type': 'uint64',