jcs.org
qemu with hax to log dma reads & writes
jcs.org/2018/11/12/vfio
docs/xbzrle: correction
1. Default cache size is 64MB.
2. Semantics correction.
Signed-off-by: Cao jin <caoj.fnst@cn.fujitsu.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
authored by
Cao jin
and committed by
Juan Quintela
7c2b0f65
2ff30257
+2
-2
+2
-2
docs/xbzrle.txt
+2
-2
docs/xbzrle.txt
···
42
42
length = uleb128 encoded integer
43
43
44
44
On the sender side XBZRLE is used as a compact delta encoding of page updates,
45
-
retrieving the old page content from the cache (default size of 512 MB). The
45
+
retrieving the old page content from the cache (default size of 64MB). The
46
46
receiving side uses the existing page's content and XBZRLE to decode the new
47
47
page's content.
48
48
···
73
73
74
74
Cache update strategy
75
75
=====================
76
-
Keeping the hot pages in the cache is effective for decreased cache
76
+
Keeping the hot pages in the cache is effective for decreasing cache
77
77
misses. XBZRLE uses a counter as the age of each page. The counter will
78
78
increase after each ram dirty bitmap sync. When a cache conflict is
79
79
detected, XBZRLE will only evict pages in the cache that are older than