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multifd: Add multifd-zstd-level parameter 

This parameter specifies the zstd compression level. The next patch
will put it to use.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
This commit is contained in:
Juan Quintela 2020-01-23 17:41:36 +01:00
parent 3a67848134
commit 6a9ad15420
4 changed files with 55 additions and 3 deletions
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24
migration/migration.c
View File

@ -91,6 +91,8 @@
#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
/* 0: means nocompress, 1: best speed, ... 20: best compress ratio */
#define DEFAULT_MIGRATE_MULTIFD_ZSTD_LEVEL 1
/* Background transfer rate for postcopy, 0 means unlimited, note
* that page requests can still exceed this limit.
@ -805,6 +807,8 @@ 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_zstd_level = true;
params->multifd_zstd_level = s->parameters.multifd_zstd_level;
params->has_xbzrle_cache_size = true;
params->xbzrle_cache_size = s->parameters.xbzrle_cache_size;
params->has_max_postcopy_bandwidth = true;
@ -1219,6 +1223,13 @@ static bool migrate_params_check(MigrationParameters *params, Error **errp)
return false;
}
if (params->has_multifd_zstd_level &&
(params->multifd_zstd_level > 20)) {
error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "multifd_zstd_level",
"is invalid, it should be in the range of 0 to 20");
return false;
}
if (params->has_xbzrle_cache_size &&
(params->xbzrle_cache_size < qemu_target_page_size() ||
!is_power_of_2(params->xbzrle_cache_size))) {
@ -2274,6 +2285,15 @@ int migrate_multifd_zlib_level(void)
return s->parameters.multifd_zlib_level;
}
int migrate_multifd_zstd_level(void)
{
MigrationState *s;
s = migrate_get_current();
return s->parameters.multifd_zstd_level;
}
int migrate_use_xbzrle(void)
{
MigrationState *s;
@ -3567,6 +3587,9 @@ static Property migration_properties[] = {
DEFINE_PROP_UINT8("multifd-zlib-level", MigrationState,
parameters.multifd_zlib_level,
DEFAULT_MIGRATE_MULTIFD_ZLIB_LEVEL),
DEFINE_PROP_UINT8("multifd-zstd-level", MigrationState,
parameters.multifd_zstd_level,
DEFAULT_MIGRATE_MULTIFD_ZSTD_LEVEL),
DEFINE_PROP_SIZE("xbzrle-cache-size", MigrationState,
parameters.xbzrle_cache_size,
DEFAULT_MIGRATE_XBZRLE_CACHE_SIZE),
@ -3659,6 +3682,7 @@ static void migration_instance_init(Object *obj)
params->has_multifd_channels = true;
params->has_multifd_compression = true;
params->has_multifd_zlib_level = true;
params->has_multifd_zstd_level = true;
params->has_xbzrle_cache_size = true;
params->has_max_postcopy_bandwidth = true;
params->has_max_cpu_throttle = true;

1
migration/migration.h
View File

@ -302,6 +302,7 @@ bool migrate_pause_before_switchover(void);
int migrate_multifd_channels(void);
MultiFDCompression migrate_multifd_compression(void);
int migrate_multifd_zlib_level(void);
int migrate_multifd_zstd_level(void);
int migrate_use_xbzrle(void);
int64_t migrate_xbzrle_cache_size(void);

4
monitor/hmp-cmds.c
View File

@ -1841,6 +1841,10 @@ void hmp_migrate_set_parameter(Monitor *mon, const QDict *qdict)
p->has_multifd_zlib_level = true;
visit_type_int(v, param, &p->multifd_zlib_level, &err);
break;
case MIGRATION_PARAMETER_MULTIFD_ZSTD_LEVEL:
p->has_multifd_zstd_level = true;
visit_type_int(v, param, &p->multifd_zstd_level, &err);
break;
case MIGRATION_PARAMETER_XBZRLE_CACHE_SIZE:
p->has_xbzrle_cache_size = true;
visit_type_size(v, param, &cache_size, &err);

29
qapi/migration.json
View File

@ -610,6 +610,13 @@
# will consume more CPU.
# Defaults to 1. (Since 5.0)
#
# @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 speed, and 20 means best compression ratio which
# will consume more CPU.
# Defaults to 1. (Since 5.0)
#
# Since: 2.4
##
{ 'enum': 'MigrationParameter',
@ -623,7 +630,7 @@
'multifd-channels',
'xbzrle-cache-size', 'max-postcopy-bandwidth',
'max-cpu-throttle', 'multifd-compression',
'multifd-zlib-level' ] }
'multifd-zlib-level' ,'multifd-zstd-level' ] }
##
# @MigrateSetParameters:
@ -723,6 +730,13 @@
# will consume more CPU.
# Defaults to 1. (Since 5.0)
#
# @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 speed, and 20 means best compression ratio which
# will consume more CPU.
# Defaults to 1. (Since 5.0)
#
# Since: 2.4
##
# TODO either fuse back into MigrationParameters, or make
@ -750,7 +764,8 @@
'*max-postcopy-bandwidth': 'size',
'*max-cpu-throttle': 'int',
'*multifd-compression': 'MultiFDCompression',
'*multifd-zlib-level': 'int' } }
'*multifd-zlib-level': 'int',
'*multifd-zstd-level': 'int' } }
##
# @migrate-set-parameters:
@ -870,6 +885,13 @@
# will consume more CPU.
# Defaults to 1. (Since 5.0)
#
# @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 speed, and 20 means best compression ratio which
# will consume more CPU.
# Defaults to 1. (Since 5.0)
#
# Since: 2.4
##
{ 'struct': 'MigrationParameters',
@ -895,7 +917,8 @@
'*max-postcopy-bandwidth': 'size',
'*max-cpu-throttle': 'uint8',
'*multifd-compression': 'MultiFDCompression',
'*multifd-zlib-level': 'uint8' } }
'*multifd-zlib-level': 'uint8',
'*multifd-zstd-level': 'uint8' } }
##
# @query-migrate-parameters: