Indicates how many pages we are going to send in each batch to a multifd
thread.
Signed-off-by: Juan Quintela <quint...@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilb...@redhat.com>
--
Be consistent with defaults and documentation
---
hmp.c | 8 ++++++++
migration/migration.c | 23 +++++++++++++++++++++++
migration/migration.h | 1 +
qapi-schema.json | 11 +++++++++--
4 files changed, 41 insertions(+), 2 deletions(-)
diff --git a/hmp.c b/hmp.c
index 92f9456..b01605a 100644
--- a/hmp.c
+++ b/hmp.c
@@ -338,6 +338,9 @@ void hmp_info_migrate_parameters(Monitor *mon, const QDict
*qdict)
monitor_printf(mon, "%s: %" PRId64 "\n",
MigrationParameter_lookup[MIGRATION_PARAMETER_X_MULTIFD_THREADS],
params->x_multifd_threads);
+ monitor_printf(mon, "%s: %" PRId64 "\n",
+ MigrationParameter_lookup[MIGRATION_PARAMETER_X_MULTIFD_GROUP],
+ params->x_multifd_group);
}
qapi_free_MigrationParameters(params);
@@ -1580,6 +1583,10 @@ void hmp_migrate_set_parameter(Monitor *mon, const QDict
*qdict)
p.has_x_multifd_threads = true;
use_int_value = true;
break;
+ case MIGRATION_PARAMETER_X_MULTIFD_GROUP:
+ p.has_x_multifd_group = true;
+ use_int_value = true;
+ break;
}
if (use_int_value) {
@@ -1597,6 +1604,7 @@ void hmp_migrate_set_parameter(Monitor *mon, const QDict
*qdict)
p.downtime_limit = valueint;
p.x_checkpoint_delay = valueint;
p.x_multifd_threads = valueint;
+ p.x_multifd_group = valueint;
}
qmp_migrate_set_parameters(&p, &err);
diff --git a/migration/migration.c b/migration/migration.c
index 148edc1..ff3fc9d 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -79,6 +79,7 @@
*/
#define DEFAULT_MIGRATE_X_CHECKPOINT_DELAY 200
#define DEFAULT_MIGRATE_MULTIFD_THREADS 2
+#define DEFAULT_MIGRATE_MULTIFD_GROUP 16
static NotifierList migration_state_notifiers =
NOTIFIER_LIST_INITIALIZER(migration_state_notifiers);
@@ -463,6 +464,8 @@ MigrationParameters *qmp_query_migrate_parameters(Error
**errp)
params->block_incremental = s->parameters.block_incremental;
params->has_x_multifd_threads = true;
params->x_multifd_threads = s->parameters.x_multifd_threads;
+ params->has_x_multifd_group = true;
+ params->x_multifd_group = s->parameters.x_multifd_group;
return params;
}
@@ -722,6 +725,13 @@ void qmp_migrate_set_parameters(MigrationParameters
*params, Error **errp)
"is invalid, it should be in the range of 1 to 255");
return;
}
+ if (params->has_x_multifd_group &&
+ (params->x_multifd_group < 1 || params->x_multifd_group > 10000)) {
+ error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
+ "multifd_group",
+ "is invalid, it should be in the range of 1 to 10000");
+ return;
+ }
if (params->has_compress_level) {
s->parameters.compress_level = params->compress_level;
@@ -769,6 +779,9 @@ void qmp_migrate_set_parameters(MigrationParameters
*params, Error **errp)
if (params->has_x_multifd_threads) {
s->parameters.x_multifd_threads = params->x_multifd_threads;
}
+ if (params->has_x_multifd_group) {
+ s->parameters.x_multifd_group = params->x_multifd_group;
+ }
}
@@ -1313,6 +1326,15 @@ int migrate_multifd_threads(void)
return s->parameters.x_multifd_threads;
}
+int migrate_multifd_group(void)
+{
+ MigrationState *s;
+
+ s = migrate_get_current();
+
+ return s->parameters.x_multifd_group;
+}
+
int migrate_use_xbzrle(void)
{
MigrationState *s;
@@ -2078,6 +2100,7 @@ static void migration_instance_init(Object *obj)
.downtime_limit = DEFAULT_MIGRATE_SET_DOWNTIME,
.x_checkpoint_delay = DEFAULT_MIGRATE_X_CHECKPOINT_DELAY,
.x_multifd_threads = DEFAULT_MIGRATE_MULTIFD_THREADS,
+ .x_multifd_group = DEFAULT_MIGRATE_MULTIFD_GROUP,
};
ms->parameters.tls_creds = g_strdup("");
ms->parameters.tls_hostname = g_strdup("");
diff --git a/migration/migration.h b/migration/migration.h
index 20ea30c..4aaaf9e 100644
--- a/migration/migration.h
+++ b/migration/migration.h
@@ -174,6 +174,7 @@ bool migrate_zero_blocks(void);
bool migrate_auto_converge(void);
bool migrate_use_multifd(void);
int migrate_multifd_threads(void);
+int migrate_multifd_group(void);
int migrate_use_xbzrle(void);
int64_t migrate_xbzrle_cache_size(void);
diff --git a/qapi-schema.json b/qapi-schema.json
index 444e8f0..5b3733e 100644
--- a/qapi-schema.json
+++ b/qapi-schema.json
@@ -1033,6 +1033,9 @@
# number of sockets used for migration.
# The default value is 2 (since 2.10)
#
+# @x-multifd-group: Number of pages sent together to a thread
+# The default value is 16 (since 2.10)
+#
# Since: 2.4
##
{ 'enum': 'MigrationParameter',
@@ -1040,7 +1043,7 @@
'cpu-throttle-initial', 'cpu-throttle-increment',
'tls-creds', 'tls-hostname', 'max-bandwidth',
'downtime-limit', 'x-checkpoint-delay', 'block-incremental',
- 'x-multifd-threads'] }
+ 'x-multifd-threads', 'x-multifd-group'] }
##
# @migrate-set-parameters:
@@ -1119,6 +1122,9 @@
# number of sockets used for migration.
# The default value is 2 (since 2.10)
#
+# @x-multifd-group: Number of pages sent together to a thread
+# The default value is 16 (since 2.10)
+#
# Since: 2.4
##
{ 'struct': 'MigrationParameters',
@@ -1133,7 +1139,8 @@
'*downtime-limit': 'int',
'*x-checkpoint-delay': 'int',
'*block-incremental': 'bool',
- '*x-multifd-threads': 'int'} }
+ '*x-multifd-threads': 'int',
+ '*x-multifd-group': 'int'} }
##
# @query-migrate-parameters:
--
2.9.4
