jcs.org
qemu with hax to log dma reads & writes
jcs.org/2018/11/12/vfio
xbzrle: update xbzrle doc
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>
authored by
Mao Zhongyi
and committed by
Dr. David Alan Gilbert
06b1c6f8
33ee3d96
+8
-3
+6
-1
docs/xbzrle.txt
+6
-1
docs/xbzrle.txt
···
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power of 2. The cache default value is 64MBytes. (on source only)
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{qemu} migrate_set_cache_size 256m
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Commit 73af8dd8d7 "migration: Make xbzrle_cache_size a migration parameter"
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(v2.11.0) deprecated migrate-set-cache-size, therefore, the new parameter
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is recommended.
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{qemu} migrate_set_parameter xbzrle-cache-size 256m
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4. Start outgoing migration
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{qemu} migrate -d tcp:destination.host:4444
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{qemu} info migrate
···
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xbzrle transferred: I kbytes
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xbzrle pages: J pages
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xbzrle cache miss: K
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-
xbzrle overflow : L
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xbzrle overflow: L
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xbzrle cache-miss: the number of cache misses to date - high cache-miss rate
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indicates that the cache size is set too low.
+1
-1
migration/migration.c
+1
-1
migration/migration.c
+1
-1
monitor/hmp-cmds.c
+1
-1
monitor/hmp-cmds.c
···
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info->xbzrle_cache->cache_miss);
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monitor_printf(mon, "xbzrle cache miss rate: %0.2f\n",
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info->xbzrle_cache->cache_miss_rate);
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monitor_printf(mon, "xbzrle overflow : %" PRIu64 "\n",
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monitor_printf(mon, "xbzrle overflow: %" PRIu64 "\n",
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info->xbzrle_cache->overflow);
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}
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