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SubjectRe: Slow I/O performance on SAS1064
On Fri, Mar 07, 2014 at 08:24:48AM -0800, Purush Gupta wrote:
> I noticed you had benchmarked only sda target, is the behavior same on
> other targets?
>
Yes the other disk are equal to sda , but they are used with zfs and there were other preformance problems because of the multible disk access.
config:

NAME STATE READ WRITE CKSUM
home ONLINE 0 0 0
raidz1-0 ONLINE 0 0 0
sdb ONLINE 0 0 3
sdc ONLINE 0 0 0
sdd ONLINE 0 0 0



> Since they are SCSI targets, have you explored sg_utils [
> http://sg.danny.cz/sg/uu_index.html]
>
> And for benchmarking I also recommend FIO https://github.com/axboe/fio
>
Thanks for the tips.
> Good luck,
> Purush
>
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