diff options
| author | Hyman Huang(黄勇) <yong.huang@smartx.com> | 2023-06-07 21:32:59 +0800 |
|---|---|---|
| committer | Juan Quintela <quintela@redhat.com> | 2023-07-26 10:55:56 +0200 |
| commit | 4d8078571906932c496ddeda541fb4b026fd12f5 (patch) | |
| tree | 9aaf6e2001fa7eeb94a5270d3fb57388049d97c3 /qapi/migration.json | |
| parent | 140e5a7632beb2adbc72066ca2d7146a7bdb2ec5 (diff) | |
| download | qemu-4d8078571906932c496ddeda541fb4b026fd12f5.zip qemu-4d8078571906932c496ddeda541fb4b026fd12f5.tar.gz qemu-4d8078571906932c496ddeda541fb4b026fd12f5.tar.bz2 | |
qapi/migration: Introduce x-vcpu-dirty-limit-period parameter
Introduce "x-vcpu-dirty-limit-period" migration experimental
parameter, which is in the range of 1 to 1000ms and used to
make dirtyrate calculation period configurable.
Currently with the "x-vcpu-dirty-limit-period" varies, the
total time of live migration changes, test results show the
optimal value of "x-vcpu-dirty-limit-period" ranges from
500ms to 1000 ms. "x-vcpu-dirty-limit-period" should be made
stable once it proves best value can not be determined with
developer's experiments.
Signed-off-by: Hyman Huang(黄勇) <yong.huang@smartx.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Message-Id: <168618975839.6361.17407633874747688653-2@git.sr.ht>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Diffstat (limited to 'qapi/migration.json')
| -rw-r--r-- | qapi/migration.json | 34 |
1 files changed, 27 insertions, 7 deletions
diff --git a/qapi/migration.json b/qapi/migration.json index 2a6565a..d83b694 100644 --- a/qapi/migration.json +++ b/qapi/migration.json @@ -789,9 +789,14 @@ # Nodes are mapped to their block device name if there is one, and # to their node name otherwise. (Since 5.2) # +# @x-vcpu-dirty-limit-period: Periodic time (in milliseconds) of dirty limit during +# live migration. Should be in the range 1 to 1000ms, +# defaults to 1000ms. (Since 8.1) +# # Features: # -# @unstable: Member @x-checkpoint-delay is experimental. +# @unstable: Members @x-checkpoint-delay and @x-vcpu-dirty-limit-period +# are experimental. # # Since: 2.4 ## @@ -809,8 +814,9 @@ 'multifd-channels', 'xbzrle-cache-size', 'max-postcopy-bandwidth', 'max-cpu-throttle', 'multifd-compression', - 'multifd-zlib-level' ,'multifd-zstd-level', - 'block-bitmap-mapping' ] } + 'multifd-zlib-level', 'multifd-zstd-level', + 'block-bitmap-mapping', + { 'name': 'x-vcpu-dirty-limit-period', 'features': ['unstable'] } ] } ## # @MigrateSetParameters: @@ -945,9 +951,14 @@ # Nodes are mapped to their block device name if there is one, and # to their node name otherwise. (Since 5.2) # +# @x-vcpu-dirty-limit-period: Periodic time (in milliseconds) of dirty limit during +# live migration. Should be in the range 1 to 1000ms, +# defaults to 1000ms. (Since 8.1) +# # Features: # -# @unstable: Member @x-checkpoint-delay is experimental. +# @unstable: Members @x-checkpoint-delay and @x-vcpu-dirty-limit-period +# are experimental. # # TODO: either fuse back into MigrationParameters, or make # MigrationParameters members mandatory @@ -982,7 +993,9 @@ '*multifd-compression': 'MultiFDCompression', '*multifd-zlib-level': 'uint8', '*multifd-zstd-level': 'uint8', - '*block-bitmap-mapping': [ 'BitmapMigrationNodeAlias' ] } } + '*block-bitmap-mapping': [ 'BitmapMigrationNodeAlias' ], + '*x-vcpu-dirty-limit-period': { 'type': 'uint64', + 'features': [ 'unstable' ] } } } ## # @migrate-set-parameters: @@ -1137,9 +1150,14 @@ # Nodes are mapped to their block device name if there is one, and # to their node name otherwise. (Since 5.2) # +# @x-vcpu-dirty-limit-period: Periodic time (in milliseconds) of dirty limit during +# live migration. Should be in the range 1 to 1000ms, +# defaults to 1000ms. (Since 8.1) +# # Features: # -# @unstable: Member @x-checkpoint-delay is experimental. +# @unstable: Members @x-checkpoint-delay and @x-vcpu-dirty-limit-period +# are experimental. # # Since: 2.4 ## @@ -1171,7 +1189,9 @@ '*multifd-compression': 'MultiFDCompression', '*multifd-zlib-level': 'uint8', '*multifd-zstd-level': 'uint8', - '*block-bitmap-mapping': [ 'BitmapMigrationNodeAlias' ] } } + '*block-bitmap-mapping': [ 'BitmapMigrationNodeAlias' ], + '*x-vcpu-dirty-limit-period': { 'type': 'uint64', + 'features': [ 'unstable' ] } } } ## # @query-migrate-parameters: |