On Tue, Mar 28 2006, Douglas Gilbert wrote: > Ju, Seokmann wrote: > > Hi, > > > > Are there any performance measurement tools available that running on > > Linux? > > I would like to measure disk I/O performance (file system and raw I/O) > > on several kernels. > > Please lead me to the place. > > The sg3_utils package may help with some raw SCSI > and SATA disk I/O measurements. > sg_dd, sgp_dd and sgm_dd are dd variants that > let you tweak a lot of low level details. The sg_read > utility can be used to measure disk cache throughput, > transport speeds and command overhead. I wrote a little fio tool that can be used as well, it can use various types of io engines: libaio, posixaio, regular sync io, direct io, and SG_IO io. You can write simple job files for it, there are some examples included in the tar ball. http://brick.kernel.dk/snaps/ Just grab the latest snapshot, that's usually the least buggy version :-) -- Jens Axboe - : send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
