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xbzrle: update xbzrle doc

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Add new parameter description, also:
1. Remove unsociable space.
2. Nit picking: s/two/2 in report

Signed-off-by: Mao Zhongyi <maozhongyi@cmss.chinamobile.com>
Message-Id: <20200320143216.423374-1-maozhongyi@cmss.chinamobile.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
This commit is contained in:
Mao Zhongyi 2020-03-20 22:32:16 +08:00 committed by Dr. David Alan Gilbert
parent 33ee3d96c7
commit 06b1c6f8b7
3 changed files with 8 additions and 3 deletions
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7
docs/xbzrle.txt
View File

@ -92,6 +92,11 @@ Usage
power of 2. The cache default value is 64MBytes. (on source only) power of 2. The cache default value is 64MBytes. (on source only)
{qemu} migrate_set_cache_size 256m {qemu} migrate_set_cache_size 256m
Commit 73af8dd8d7 "migration: Make xbzrle_cache_size a migration parameter"
(v2.11.0) deprecated migrate-set-cache-size, therefore, the new parameter
is recommended.
{qemu} migrate_set_parameter xbzrle-cache-size 256m
4. Start outgoing migration 4. Start outgoing migration
{qemu} migrate -d tcp:destination.host:4444 {qemu} migrate -d tcp:destination.host:4444
{qemu} info migrate {qemu} info migrate
@ -108,7 +113,7 @@ power of 2. The cache default value is 64MBytes. (on source only)
xbzrle transferred: I kbytes xbzrle transferred: I kbytes
xbzrle pages: J pages xbzrle pages: J pages
xbzrle cache miss: K xbzrle cache miss: K
xbzrle overflow : L xbzrle overflow: L
xbzrle cache-miss: the number of cache misses to date - high cache-miss rate xbzrle cache-miss: the number of cache misses to date - high cache-miss rate
indicates that the cache size is set too low. indicates that the cache size is set too low.

2
migration/migration.c
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@ -1243,7 +1243,7 @@ static bool migrate_params_check(MigrationParameters *params, Error **errp)
error_setg(errp, QERR_INVALID_PARAMETER_VALUE, error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
"xbzrle_cache_size", "xbzrle_cache_size",
"is invalid, it should be bigger than target page size" "is invalid, it should be bigger than target page size"
" and a power of two"); " and a power of 2");
return false; return false;
} }

2
monitor/hmp-cmds.c
View File

@ -303,7 +303,7 @@ void hmp_info_migrate(Monitor *mon, const QDict *qdict)
info->xbzrle_cache->cache_miss); info->xbzrle_cache->cache_miss);
monitor_printf(mon, "xbzrle cache miss rate: %0.2f\n", monitor_printf(mon, "xbzrle cache miss rate: %0.2f\n",
info->xbzrle_cache->cache_miss_rate); info->xbzrle_cache->cache_miss_rate);
monitor_printf(mon, "xbzrle overflow : %" PRIu64 "\n", monitor_printf(mon, "xbzrle overflow: %" PRIu64 "\n",
info->xbzrle_cache->overflow); info->xbzrle_cache->overflow);
} }