Add migrate_set_cache_size command

Change XBZRLE cache size in bytes (the size should be a power of 2, it will be
rounded down to the nearest power of 2).
If XBZRLE cache size is too small there will be many cache miss.

New query-migrate-cache-size QMP command and 'info migrate_cache_size' HMP
command to query cache value.

Signed-off-by: Benoit Hudzia <benoit.hudzia@sap.com>
Signed-off-by: Petter Svard <petters@cs.umu.se>
Signed-off-by: Aidan Shribman <aidan.shribman@sap.com>
Signed-off-by: Orit Wasserman <owasserm@redhat.com>

Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Orit Wasserman 2012-08-06 21:42:54 +03:00 committed by Juan Quintela
parent 17ad9b358b
commit 9e1ba4cc4e
9 changed files with 152 additions and 0 deletions

View file

@ -2661,6 +2661,13 @@ static mon_cmd_t info_cmds[] = {
.help = "show current migration capabilities",
.mhandler.info = hmp_info_migrate_capabilities,
},
{
.name = "migrate_cache_size",
.args_type = "",
.params = "",
.help = "show current migration xbzrle cache size",
.mhandler.info = hmp_info_migrate_cache_size,
},
{
.name = "balloon",
.args_type = "",