summaryrefslogtreecommitdiffstats
path: root/doc/cephfs/journaler.rst
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--doc/cephfs/journaler.rst41
1 files changed, 41 insertions, 0 deletions
diff --git a/doc/cephfs/journaler.rst b/doc/cephfs/journaler.rst
new file mode 100644
index 000000000..2121532f5
--- /dev/null
+++ b/doc/cephfs/journaler.rst
@@ -0,0 +1,41 @@
+===========
+ Journaler
+===========
+
+``journaler write head interval``
+
+:Description: How frequently to update the journal head object
+:Type: Integer
+:Required: No
+:Default: ``15``
+
+
+``journaler prefetch periods``
+
+:Description: How many stripe periods to read-ahead on journal replay
+:Type: Integer
+:Required: No
+:Default: ``10``
+
+
+``journal prezero periods``
+
+:Description: How many stripe periods to zero ahead of write position
+:Type: Integer
+:Required: No
+:Default: ``10``
+
+``journaler batch interval``
+
+:Description: Maximum additional latency in seconds we incur artificially.
+:Type: Double
+:Required: No
+:Default: ``.001``
+
+
+``journaler batch max``
+
+:Description: Maximum bytes we will delay flushing.
+:Type: 64-bit Unsigned Integer
+:Required: No
+:Default: ``0``