Documented mem_requested stat

1 files changed, 7 insertions, 0 deletions

diff --git a/doc/protocol.txt b/doc/protocol.txt
index 5515b63..895d62d 100644
--- a/doc/protocol.txt
+++ b/doc/protocol.txt
@@ -555,10 +555,17 @@ END\r\n
 | free_chunks     | Chunks not yet allocated to items, or freed via delete.  |
 | free_chunks_end | Number of free chunks at the end of the last allocated   |
 |                 | page.                                                    |
+| mem_requested   | Number of bytes requested to be stored in this slab[*].  |
 | active_slabs    | Total number of slab classes allocated.                  |
 | total_malloced  | Total amount of memory allocated to slab pages.          |
 |-----------------+----------------------------------------------------------|
 
+* Items are stored in a slab that is the same size or larger than the
+  item.  mem_requested shows the size of all items within a
+  slab. (total_pages * 1MB) - mem_requested shows memory wasted in a
+  slab class.  If you see a lot of waste, consider tuning the slab
+  factor.
+
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