diff options
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/qmp-commands.txt | 13 | ||||
| -rw-r--r-- | docs/xbzrle.txt | 4 |
2 files changed, 12 insertions, 5 deletions
diff --git a/docs/qmp-commands.txt b/docs/qmp-commands.txt index 7f652e01e5..3220fb1075 100644 --- a/docs/qmp-commands.txt +++ b/docs/qmp-commands.txt @@ -2910,7 +2910,9 @@ Set migration parameters throttled for auto-converge (json-int) - "cpu-throttle-increment": set throttle increasing percentage for auto-converge (json-int) - +- "max-bandwidth": set maximum speed for migrations (in bytes/sec) (json-int) +- "downtime-limit": set maximum tolerated downtime (in milliseconds) for + migrations (json-int) Arguments: Example: @@ -2931,7 +2933,10 @@ Query current migration parameters throttled (json-int) - "cpu-throttle-increment" : throttle increasing percentage for auto-converge (json-int) - + - "max-bandwidth" : maximium migration speed in bytes per second + (json-int) + - "downtime-limit" : maximum tolerated downtime of migration in + milliseconds (json-int) Arguments: Example: @@ -2943,7 +2948,9 @@ Example: "cpu-throttle-increment": 10, "compress-threads": 8, "compress-level": 1, - "cpu-throttle-initial": 20 + "cpu-throttle-initial": 20, + "max-bandwidth": 33554432, + "downtime-limit": 300 } } diff --git a/docs/xbzrle.txt b/docs/xbzrle.txt index 52c8511a4c..c0a7dfd44c 100644 --- a/docs/xbzrle.txt +++ b/docs/xbzrle.txt @@ -42,7 +42,7 @@ nzrun = length byte... length = uleb128 encoded integer On the sender side XBZRLE is used as a compact delta encoding of page updates, -retrieving the old page content from the cache (default size of 512 MB). The +retrieving the old page content from the cache (default size of 64MB). The receiving side uses the existing page's content and XBZRLE to decode the new page's content. @@ -73,7 +73,7 @@ e9 07 0f 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f 03 01 67 01 01 69 Cache update strategy ===================== -Keeping the hot pages in the cache is effective for decreased cache +Keeping the hot pages in the cache is effective for decreasing cache misses. XBZRLE uses a counter as the age of each page. The counter will increase after each ram dirty bitmap sync. When a cache conflict is detected, XBZRLE will only evict pages in the cache that are older than |