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migration: Extend query-migrate to provide dirty page limit info

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Extend query-migrate to provide throttle time and estimated
ring full time with dirty-limit capability enabled, through which
we can observe if dirty limit take effect during live migration.

Signed-off-by: Hyman Huang(黄勇) <yong.huang@smartx.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Message-ID: <168733225273.5845.15871826788879741674-8@git.sr.ht>
Signed-off-by: Juan Quintela <quintela@redhat.com>
This commit is contained in:
Hyman Huang(黄勇) 2023-06-08 00:21:58 +08:00 • committed by Juan Quintela
parent acac51ba24
commit 15699cf542
5 changed files with 76 additions and 1 deletions
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10
migration/migration-hmp-cmds.c
View file

@ -190,6 +190,16 @@ void hmp_info_migrate(Monitor *mon, const QDict *qdict)
info->cpu_throttle_percentage);
}
if (info->has_dirty_limit_throttle_time_per_round) {
monitor_printf(mon, "dirty-limit throttle time: %" PRIu64 " us\n",
info->dirty_limit_throttle_time_per_round);
}
if (info->has_dirty_limit_ring_full_time) {
monitor_printf(mon, "dirty-limit ring full time: %" PRIu64 " us\n",
info->dirty_limit_ring_full_time);
}
if (info->has_postcopy_blocktime) {
monitor_printf(mon, "postcopy blocktime: %u\n",
info->postcopy_blocktime);

10
migration/migration.c
View file

@ -64,6 +64,7 @@
#include "yank_functions.h"
#include "sysemu/qtest.h"
#include "options.h"
#include "sysemu/dirtylimit.h"
static NotifierList migration_state_notifiers =
NOTIFIER_LIST_INITIALIZER(migration_state_notifiers);
@ -974,6 +975,15 @@ static void populate_ram_info(MigrationInfo *info, MigrationState *s)
info->ram->dirty_pages_rate =
stat64_get(&mig_stats.dirty_pages_rate);
}
if (migrate_dirty_limit() && dirtylimit_in_service()) {
info->has_dirty_limit_throttle_time_per_round = true;
info->dirty_limit_throttle_time_per_round =
dirtylimit_throttle_time_per_round();
info->has_dirty_limit_ring_full_time = true;
info->dirty_limit_ring_full_time = dirtylimit_ring_full_time();
}
}
static void populate_disk_info(MigrationInfo *info)