diff options
Diffstat (limited to 'migration/migration.c')
| -rw-r--r-- | migration/migration.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/migration/migration.c b/migration/migration.c index eb7b0a2df0..a09726f679 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -89,6 +89,8 @@ #define DEFAULT_MIGRATE_X_CHECKPOINT_DELAY (200 * 100) #define DEFAULT_MIGRATE_MULTIFD_CHANNELS 2 #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 /* Background transfer rate for postcopy, 0 means unlimited, note * that page requests can still exceed this limit. @@ -801,6 +803,8 @@ MigrationParameters *qmp_query_migrate_parameters(Error **errp) params->multifd_channels = s->parameters.multifd_channels; params->has_multifd_compression = true; params->multifd_compression = s->parameters.multifd_compression; + params->has_multifd_zlib_level = true; + params->multifd_zlib_level = s->parameters.multifd_zlib_level; params->has_xbzrle_cache_size = true; params->xbzrle_cache_size = s->parameters.xbzrle_cache_size; params->has_max_postcopy_bandwidth = true; @@ -1208,6 +1212,13 @@ static bool migrate_params_check(MigrationParameters *params, Error **errp) return false; } + if (params->has_multifd_zlib_level && + (params->multifd_zlib_level > 9)) { + error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "multifd_zlib_level", + "is invalid, it should be in the range of 0 to 9"); + return false; + } + if (params->has_xbzrle_cache_size && (params->xbzrle_cache_size < qemu_target_page_size() || !is_power_of_2(params->xbzrle_cache_size))) { @@ -2254,6 +2265,15 @@ MultiFDCompression migrate_multifd_compression(void) return s->parameters.multifd_compression; } +int migrate_multifd_zlib_level(void) +{ + MigrationState *s; + + s = migrate_get_current(); + + return s->parameters.multifd_zlib_level; +} + int migrate_use_xbzrle(void) { MigrationState *s; @@ -3544,6 +3564,9 @@ static Property migration_properties[] = { DEFINE_PROP_MULTIFD_COMPRESSION("multifd-compression", MigrationState, parameters.multifd_compression, DEFAULT_MIGRATE_MULTIFD_COMPRESSION), + DEFINE_PROP_UINT8("multifd-zlib-level", MigrationState, + parameters.multifd_zlib_level, + DEFAULT_MIGRATE_MULTIFD_ZLIB_LEVEL), DEFINE_PROP_SIZE("xbzrle-cache-size", MigrationState, parameters.xbzrle_cache_size, DEFAULT_MIGRATE_XBZRLE_CACHE_SIZE), @@ -3635,6 +3658,7 @@ static void migration_instance_init(Object *obj) params->has_block_incremental = true; params->has_multifd_channels = true; params->has_multifd_compression = true; + params->has_multifd_zlib_level = true; params->has_xbzrle_cache_size = true; params->has_max_postcopy_bandwidth = true; params->has_max_cpu_throttle = true; |