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migration: Tally pre-copy, downtime and post-copy bytes independently

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Provide information on the number of bytes copied in the pre-copy,
downtime and post-copy phases of migration.

Signed-off-by: David Edmondson <david.edmondson@oracle.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
This commit is contained in:
David Edmondson 2021-12-21 09:34:41 +00:00 committed by Juan Quintela
parent 4c2d0f6dca
commit ae68066880
4 changed files with 34 additions and 1 deletions
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3
migration/migration.c
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@ -1014,6 +1014,9 @@ static void populate_ram_info(MigrationInfo *info, MigrationState *s)
info->ram->page_size = page_size;
info->ram->multifd_bytes = ram_counters.multifd_bytes;
info->ram->pages_per_second = s->pages_per_second;
info->ram->precopy_bytes = ram_counters.precopy_bytes;
info->ram->downtime_bytes = ram_counters.downtime_bytes;
info->ram->postcopy_bytes = ram_counters.postcopy_bytes;
if (migrate_use_xbzrle()) {
info->has_xbzrle_cache = true;

7
migration/ram.c
View File

@ -389,6 +389,13 @@ MigrationStats ram_counters;
static void ram_transferred_add(uint64_t bytes)
{
if (runstate_is_running()) {
ram_counters.precopy_bytes += bytes;
} else if (migration_in_postcopy()) {
ram_counters.postcopy_bytes += bytes;
} else {
ram_counters.downtime_bytes += bytes;
}
ram_counters.transferred += bytes;
}

12
monitor/hmp-cmds.c
View File

@ -293,6 +293,18 @@ void hmp_info_migrate(Monitor *mon, const QDict *qdict)
monitor_printf(mon, "postcopy request count: %" PRIu64 "\n",
info->ram->postcopy_requests);
}
if (info->ram->precopy_bytes) {
monitor_printf(mon, "precopy ram: %" PRIu64 " kbytes\n",
info->ram->precopy_bytes >> 10);
}
if (info->ram->downtime_bytes) {
monitor_printf(mon, "downtime ram: %" PRIu64 " kbytes\n",
info->ram->downtime_bytes >> 10);
}
if (info->ram->postcopy_bytes) {
monitor_printf(mon, "postcopy ram: %" PRIu64 " kbytes\n",
info->ram->postcopy_bytes >> 10);
}
}
if (info->has_disk) {

13
qapi/migration.json
View File

@ -46,6 +46,15 @@
# @pages-per-second: the number of memory pages transferred per second
# (Since 4.0)
#
# @precopy-bytes: The number of bytes sent in the pre-copy phase
# (since 7.0).
#
# @downtime-bytes: The number of bytes sent while the guest is paused
# (since 7.0).
#
# @postcopy-bytes: The number of bytes sent during the post-copy phase
# (since 7.0).
#
# Since: 0.14
##
{ 'struct': 'MigrationStats',
@ -54,7 +63,9 @@
'normal-bytes': 'int', 'dirty-pages-rate' : 'int',
'mbps' : 'number', 'dirty-sync-count' : 'int',
'postcopy-requests' : 'int', 'page-size' : 'int',
'multifd-bytes' : 'uint64', 'pages-per-second' : 'uint64' } }
'multifd-bytes' : 'uint64', 'pages-per-second' : 'uint64',
'precopy-bytes' : 'uint64', 'downtime-bytes' : 'uint64',
'postcopy-bytes' : 'uint64' } }
##
# @XBZRLECacheStats: