On Tue, Apr 13 2010, Bill Broadley wrote: > > I downloaded 1.38, and then the > http://brick.kernel.dk/snaps/fio-git-latest.tar.gz. Both exhibited > identical behavior. > > Both built with no problems on a centos-5.4 x86-64 box. > > REPORTING-BUGS mentioned cat .git/HEAD, so I'll report it: > ref: refs/heads/master > > Goal: > To benchmark randomly accessing a 1GB file with different blocksizes > to see how blocksize effects bandwidth. > > rand.fio: > [random-read] > rw=randread > size=128m # just enough to get the numbers > filesize=1G # make sure the seek distance is randomly over 1GB file > directory=/mnt/tmp > blocksize=1024k > > BTW, the fio.1 page says: > blocksize=int[,int], bs=int[,int] > Block size for I/O units. Default: 4k. Values for reads and > writes can be specified seperately in the format read,write, > either of which may be empty to leave that value at its default. > > BTW, that should be separately not "seperately" Thanks, will fix that. > So since I wanted to vary the blocksize I figured I'd do it on the > command line so I said: > ./fio --showcmd ~/rand.fio > fio --name=random-read --rw=randread --size=128m --filesize=1G > --directory=/mnt/tmp --blocksize=1024k > > To I tried to run it: > ./fio --name=random-read --rw=randread --size=128m --filesize=1G > --directory=/mnt/tmp --blocksize=1024k > ./fio: unrecognized option `--blocksize=1024k' > > I tried to use the config file except for the blocksize. I deleted the > blocksize= line from rand.fio and: > ./fio --blocksize=1m ~/rand.fio > ./fio: unrecognized option `--blocksize=1m' > > Potential fixes: > 1) fix showcmd to report a different flag for setting --blocksize > 2) fix fio to accept --blocksize > > Expected behavior: > I expected ./fio ~/rand.fio to work exactly like the arguments reported > by ./fio --showcmd. And it should, apparently the alias names are not duped to the command line options. I have fixed this up now, if you download the latest snapshot it should work. http://brick.kernel.dk/snaps/fio-git-latest.tar.gz -- 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
