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| author | Leonardo Bras <leobras@redhat.com> | 2022-07-11 18:11:12 -0300 |
|---|---|---|
| committer | Dr. David Alan Gilbert <dgilbert@redhat.com> | 2022-07-20 12:15:09 +0100 |
| commit | cf20c897338067ab4b70a4596fdccaf90c7e29a1 (patch) | |
| tree | 07a3b8f0b81b8e11f9d47bfb73c4e3b1d97c9379 | |
| parent | 927f93e099c4f9184e60a1bc61624ac2d04d0223 (diff) | |
| download | qemu-cf20c897338067ab4b70a4596fdccaf90c7e29a1.zip qemu-cf20c897338067ab4b70a4596fdccaf90c7e29a1.tar.gz qemu-cf20c897338067ab4b70a4596fdccaf90c7e29a1.tar.bz2 | |
Add dirty-sync-missed-zero-copy migration stat
Signed-off-by: Leonardo Bras <leobras@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20220711211112.18951-3-leobras@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
| -rw-r--r-- | migration/migration.c | 2 | ||||
| -rw-r--r-- | monitor/hmp-cmds.c | 5 | ||||
| -rw-r--r-- | qapi/migration.json | 7 |
3 files changed, 13 insertions, 1 deletions
diff --git a/migration/migration.c b/migration/migration.c index 7c7e529..15ae48b 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -1057,6 +1057,8 @@ static void populate_ram_info(MigrationInfo *info, MigrationState *s) info->ram->normal_bytes = ram_counters.normal * page_size; info->ram->mbps = s->mbps; info->ram->dirty_sync_count = ram_counters.dirty_sync_count; + info->ram->dirty_sync_missed_zero_copy = + ram_counters.dirty_sync_missed_zero_copy; info->ram->postcopy_requests = ram_counters.postcopy_requests; info->ram->page_size = page_size; info->ram->multifd_bytes = ram_counters.multifd_bytes; diff --git a/monitor/hmp-cmds.c b/monitor/hmp-cmds.c index ca98df0..a6dc79e 100644 --- a/monitor/hmp-cmds.c +++ b/monitor/hmp-cmds.c @@ -307,6 +307,11 @@ void hmp_info_migrate(Monitor *mon, const QDict *qdict) monitor_printf(mon, "postcopy ram: %" PRIu64 " kbytes\n", info->ram->postcopy_bytes >> 10); } + if (info->ram->dirty_sync_missed_zero_copy) { + monitor_printf(mon, + "Zero-copy-send fallbacks happened: %" PRIu64 " times\n", + info->ram->dirty_sync_missed_zero_copy); + } } if (info->has_disk) { diff --git a/qapi/migration.json b/qapi/migration.json index 7586df3..81185d4 100644 --- a/qapi/migration.json +++ b/qapi/migration.json @@ -55,6 +55,10 @@ # @postcopy-bytes: The number of bytes sent during the post-copy phase # (since 7.0). # +# @dirty-sync-missed-zero-copy: Number of times dirty RAM synchronization could +# not avoid copying dirty pages. This is between +# 0 and @dirty-sync-count * @multifd-channels. +# (since 7.1) # Since: 0.14 ## { 'struct': 'MigrationStats', @@ -65,7 +69,8 @@ 'postcopy-requests' : 'int', 'page-size' : 'int', 'multifd-bytes' : 'uint64', 'pages-per-second' : 'uint64', 'precopy-bytes' : 'uint64', 'downtime-bytes' : 'uint64', - 'postcopy-bytes' : 'uint64' } } + 'postcopy-bytes' : 'uint64', + 'dirty-sync-missed-zero-copy' : 'uint64' } } ## # @XBZRLECacheStats: |