@@ -519,14 +519,11 @@
# are present. 'return-path' capability must be enabled to use
# it. (since 8.1)
#
-# @dirty-limit: If enabled, migration will use the dirty-limit
-# algorithim to throttle down guest instead of auto-converge
-# algorithim. Throttle algorithim only works when vCPU's dirtyrate
-# greater than 'vcpu-dirty-limit', read processes in guest os
-# aren't penalized any more, so this algorithim can improve
-# performance of vCPU during live migration. This is an optional
-# performance feature and should not affect the correctness of the
-# existing auto-converge algorithim. (Since 8.1)
+# @dirty-limit: If enabled, migration will throttle vCPUs as needed to
+# keep their dirty page rate within @vcpu-dirty-limit. This can
+# improve responsiveness of large guests during live migration,
+# and can result in more stable read performance. Requires KVM
+# with accelerator property "dirty-ring-size" set. (Since 8.1)
#
# Features:
#