diff options
author | Orit Wasserman | 2012-08-06 20:42:54 +0200 |
---|---|---|
committer | Juan Quintela | 2012-08-08 13:51:12 +0200 |
commit | 9e1ba4cc4e2536d9650e84e2614c5691ed45938f (patch) | |
tree | 33337a2809496c43cf6d2c68d66fcba8d61ad8db /hmp-commands.hx | |
parent | Add XBZRLE to ram_save_block and ram_save_live (diff) | |
download | qemu-9e1ba4cc4e2536d9650e84e2614c5691ed45938f.tar.gz qemu-9e1ba4cc4e2536d9650e84e2614c5691ed45938f.tar.xz qemu-9e1ba4cc4e2536d9650e84e2614c5691ed45938f.zip |
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>
Diffstat (limited to 'hmp-commands.hx')
-rw-r--r-- | hmp-commands.hx | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/hmp-commands.hx b/hmp-commands.hx index 476b3cda2e..f6104b099f 100644 --- a/hmp-commands.hx +++ b/hmp-commands.hx @@ -829,6 +829,26 @@ STEXI @item migrate_cancel @findex migrate_cancel Cancel the current VM migration. + +ETEXI + + { + .name = "migrate_set_cache_size", + .args_type = "value:o", + .params = "value", + .help = "set cache size (in bytes) for XBZRLE migrations," + "the cache size will be rounded down to the nearest " + "power of 2.\n" + "The cache size affects the number of cache misses." + "In case of a high cache miss ratio you need to increase" + " the cache size", + .mhandler.cmd = hmp_migrate_set_cache_size, + }, + +STEXI +@item migrate_set_cache_size @var{value} +@findex migrate_set_cache_size +Set cache size to @var{value} (in bytes) for xbzrle migrations. ETEXI { @@ -1433,6 +1453,8 @@ show user network stack connection states show migration status @item info migrate_capabilities show current migration capabilities +@item info migrate_cache_size +show current migration XBZRLE cache size @item info balloon show balloon information @item info qtree |