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authorLeonid Bloch <lbloch@janustech.com>2018-09-26 19:04:46 +0300
committerKevin Wolf <kwolf@redhat.com>2018-10-01 12:51:12 +0200
commite957b50b8daecfc39a1ac09855b0eacb6edfd328 (patch)
tree9afb2feb763c3fffa2d431d8aa3464b436c91b53 /docs
parent45b4949c7bcdcd998cb42f5c517e80a2657cfd33 (diff)
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qcow2: Set the default cache-clean-interval to 10 minutes
The default cache-clean-interval is set to 10 minutes, in order to lower the overhead of the qcow2 caches (before the default was 0, i.e. disabled). * For non-Linux platforms the default is kept at 0, because cache-clean-interval is not supported there yet. Signed-off-by: Leonid Bloch <lbloch@janustech.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'docs')
-rw-r--r--docs/qcow2-cache.txt4
1 files changed, 2 insertions, 2 deletions
diff --git a/docs/qcow2-cache.txt b/docs/qcow2-cache.txt
index 1fcc065..59358b8 100644
--- a/docs/qcow2-cache.txt
+++ b/docs/qcow2-cache.txt
@@ -210,8 +210,8 @@ This example removes all unused cache entries every 15 minutes:
-drive file=hd.qcow2,cache-clean-interval=900
-If unset, the default value for this parameter is 0 and it disables
-this feature.
+If unset, the default value for this parameter is 600. Setting it to 0
+disables this feature.
Note that this functionality currently relies on the MADV_DONTNEED
argument for madvise() to actually free the memory. This is a