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rdma: export throughput w/ MigrationStats QMP

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This exposes throughput (in megabits/sec) through QMP.

Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Chegu Vinod <chegu_vinod@hp.com>
Tested-by: Chegu Vinod <chegu_vinod@hp.com>
Tested-by: Michael R. Hines <mrhines@us.ibm.com>
Signed-off-by: Michael R. Hines <mrhines@us.ibm.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
This commit is contained in:
Michael R. Hines 2013-06-25 21:35:30 -04:00 committed by Juan Quintela
parent 9f05d0c3a4
commit 7e114f8cf2
4 changed files with 13 additions and 1 deletions
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2
hmp.c
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@ -169,6 +169,8 @@ void hmp_info_migrate(Monitor *mon, const QDict *qdict)
if (info->has_ram) {
monitor_printf(mon, "transferred ram: %" PRIu64 " kbytes\n",
info->ram->transferred >> 10);
monitor_printf(mon, "throughput: %0.2f mbps\n",
info->ram->mbps);
monitor_printf(mon, "remaining ram: %" PRIu64 " kbytes\n",
info->ram->remaining >> 10);
monitor_printf(mon, "total ram: %" PRIu64 " kbytes\n",

1
include/migration/migration.h
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@ -40,6 +40,7 @@ struct MigrationState
int state;
MigrationParams params;
double mbps;
int64_t total_time;
int64_t downtime;
int64_t expected_downtime;

6
migration.c
View File

@ -66,6 +66,7 @@ MigrationState *migrate_get_current(void)
.state = MIG_STATE_SETUP,
.bandwidth_limit = MAX_THROTTLE,
.xbzrle_cache_size = DEFAULT_MIGRATE_CACHE_SIZE,
.mbps = -1,
};
return &current_migration;
@ -201,6 +202,7 @@ MigrationInfo *qmp_query_migrate(Error **errp)
info->ram->normal = norm_mig_pages_transferred();
info->ram->normal_bytes = norm_mig_bytes_transferred();
info->ram->dirty_pages_rate = s->dirty_pages_rate;
info->ram->mbps = s->mbps;
if (blk_mig_active()) {
info->has_disk = true;
@ -230,6 +232,7 @@ MigrationInfo *qmp_query_migrate(Error **errp)
info->ram->skipped = skipped_mig_pages_transferred();
info->ram->normal = norm_mig_pages_transferred();
info->ram->normal_bytes = norm_mig_bytes_transferred();
info->ram->mbps = s->mbps;
break;
case MIG_STATE_ERROR:
info->has_status = true;
@ -543,6 +546,9 @@ static void *migration_thread(void *opaque)
double bandwidth = transferred_bytes / time_spent;
max_size = bandwidth * migrate_max_downtime() / 1000000;
s->mbps = time_spent ? (((double) transferred_bytes * 8.0) /
((double) time_spent / 1000.0)) / 1000.0 / 1000.0 : -1;
DPRINTF("transferred %" PRIu64 " time_spent %" PRIu64
" bandwidth %g max_size %" PRId64 "\n",
transferred_bytes, time_spent, bandwidth, max_size);

5
qapi-schema.json
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@ -513,12 +513,15 @@
# @dirty-pages-rate: number of pages dirtied by second by the
# guest (since 1.3)
#
# @mbps: throughput in megabits/sec. (since 1.6)
#
# Since: 0.14.0
##
{ 'type': 'MigrationStats',
'data': {'transferred': 'int', 'remaining': 'int', 'total': 'int' ,
'duplicate': 'int', 'skipped': 'int', 'normal': 'int',
'normal-bytes': 'int', 'dirty-pages-rate' : 'int' } }
'normal-bytes': 'int', 'dirty-pages-rate' : 'int',
'mbps' : 'number' } }
##
# @XBZRLECacheStats