On 2011-05-19 03:50, Vikram Seth wrote: > Hi Josh, > > Thanks for the response. > > Do you mean use 'norandommap' option ? > If I disable random map then won't I lose coverage on random i/o testing? You will. With the random map turned out, you are guarenteed to hit every block and only once. Without it, you are at the mercy of the random number generator. But it is of high quality, so coverage will still be excellent and it'll likely be faster (and retain randomness at the end of the run, the random map tends to give up at the very end). Unless you are absolutely needing the coverage guarentee, I would just turn it off if it's a problem. Alternatively, make /tmp a tmpfs or similar so updates to the maps don't end up touching disk. -- 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
