Update HOWTO as well for verify_backlog
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
diff --git a/HOWTO b/HOWTO
index d3639fb..7cb24dd 100644
--- a/HOWTO
+++ b/HOWTO
@@ -935,13 +935,18 @@
associated with an IO block in memory, so for large
verify workloads, quite a bit of memory would be used up
holding this meta data. If this option is enabled, fio
+ will write only N blocks before verifying these blocks.
+
will verify the previously written blocks before continuing
to write new ones.
verify_backlog_batch=int Control how many blocks fio will verify
if verify_backlog is set. If not set, will default to
the value of verify_backlog (meaning the entire queue
- is read back and verified).
+ is read back and verified). If verify_backlog_batch is
+ less than verify_backlog then not all blocks will be verified,
+ if verify_backlog_batch is larger than verify_backlog, some
+ blocks will be verified more than once.
stonewall Wait for preceeding jobs in the job file to exit, before
starting this one. Can be used to insert serialization
@@ -1287,4 +1292,4 @@
IO latencies milliseconds: <=2, 4, 10, 20, 50, 100, 250, 500, 750, 1000, 2000, >=2000
Additional Info (dependant on continue_on_error, default off): total # errors, first error code
- Additional Info (dependant on description being set): Text description
\ No newline at end of file
+ Additional Info (dependant on description being set): Text description