On 2012-06-08 21:52, Strickland, Carl wrote: > Hi All, > > I'm performing a series of time-based storage tests and need FIO to read and > write to separate disks, in the ratio specified (e.g. 80/20). > > I've performed initial tests with two FIO instances (one read, one write), but > found that in one scenario I get a ratio of ~50/50 and in another I get > ~60/40. However, in order to compare the results of these tests, their ratios > must be approximately equal. > > Is it possible to achieve this with a single FIO instance? Do you have any > recommendations for achieving a specific ratio with two FIO instances? It's not clear from your email exactly what kind of job(s) you ran. Have you tried a single job with rwmix set? rwmixread=80 and rw=randrw should give you the requested ratio, 80% reads and 20% writes. -- Jens Axboe -- To unsubscribe from this list: send the line "unsubscribe fio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
