> > this has fixed the read aggrb reported value to be unreasonably high > > however the value is now significantly lower than 2.0.13 it's about 1/2 > > while the write value is very comparable. > > Please find the outputs below. > > This is due to the change in thinktime, fixing the unreasonable > latencies. Effectively it reduces your queue depth to what > thinktime_blocks is set to, which is 1 by default. Even if set to the > queue depth, you will still be completely draining the software queue > for every N thinktime_blocks. I'm guessing your device has write caching > enabled, hence the change is basically only apparent on reads. The > writes queue up nicely on the hw side still. > > -- > Jens Axboe > Ok - if I explicitly set the iodepth=1 in the job config file then the results of the master fio-2.1-10-g4b20 and the old 2.0.13 are comparable. Thanks again, great job, Jens cheers Edo Unless stated otherwise above: IBM United Kingdom Limited - Registered in England and Wales with number 741598. Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU -- 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
