diff options
author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-06-17 19:02:38 (GMT) |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-06-17 19:02:38 (GMT) |
commit | 1508124d8a4e0995362d93d82e5555a74bfc998f (patch) | |
tree | 62b36e0fa03b40e68be6941c5139e8ff7653d0b2 /Documentation/bcache.txt | |
parent | 976f8bef9cfb5246bc0e8dc781562daa79cb7aaf (diff) | |
parent | 7d132055814ef17a6c7b69f342244c410a5e000f (diff) | |
download | linux-fsl-qoriq-1508124d8a4e0995362d93d82e5555a74bfc998f.tar.xz |
Merge 3.10-rc6 into usb-next
We want the fixes in this branch as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/bcache.txt')
-rw-r--r-- | Documentation/bcache.txt | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/Documentation/bcache.txt b/Documentation/bcache.txt index 77db880..b3a7e7d 100644 --- a/Documentation/bcache.txt +++ b/Documentation/bcache.txt @@ -319,7 +319,10 @@ cache<0..n> Symlink to each of the cache devices comprising this cache set. cache_available_percent - Percentage of cache device free. + Percentage of cache device which doesn't contain dirty data, and could + potentially be used for writeback. This doesn't mean this space isn't used + for clean cached data; the unused statistic (in priority_stats) is typically + much lower. clear_stats Clears the statistics associated with this cache @@ -423,8 +426,11 @@ nbuckets Total buckets in this cache priority_stats - Statistics about how recently data in the cache has been accessed. This can - reveal your working set size. + Statistics about how recently data in the cache has been accessed. + This can reveal your working set size. Unused is the percentage of + the cache that doesn't contain any data. Metadata is bcache's + metadata overhead. Average is the average priority of cache buckets. + Next is a list of quantiles with the priority threshold of each. written Sum of all data that has been written to the cache; comparison with |