Add an optional parameter to trigger deterministic
file name creation (for separate write/read tasks).
Also, change the behavior when zero writers
are specified to actually generate no data.
Signed-off-by: Joe Buck <jbbuck@gmail.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
Simpler, and all the benchmarks are pretty much as pseudorandom,
in the end; that's not a relevant characteristic. The mix of read
and write operations is.
Re-run ./bootstrap to get the s3tests-test-readwrite script
regenerated to refer to the new module name.