From: Jens Axboe Date: Tue, 26 Oct 2010 14:10:58 +0000 (-0600) Subject: Update HOWTO as well for verify_backlog X-Git-Tag: fio-1.44.2~3 X-Git-Url: https://git.kernel.dk/?p=fio.git;a=commitdiff_plain;h=f42195a3ff2e186bc67968088b7cceae61ccb8f3 Update HOWTO as well for verify_backlog Signed-off-by: Jens Axboe --- diff --git a/HOWTO b/HOWTO index d3639fb4..7cb24dd8 100644 --- a/HOWTO +++ b/HOWTO @@ -935,13 +935,18 @@ verify_backlog=int Fio will normally verify the written contents of a 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 @@ Split up, the format is as follows: 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