Re: Slow I/O performance on SAS1064

2014-03-08 Thread markus
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

Re: Slow I/O performance on SAS1064

2014-03-08 Thread markus
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.

Re: Slow I/O performance on SAS1064

2014-03-07 Thread markus
On Thu, Mar 06, 2014 at 12:51:27PM -0800, Mark Knecht wrote: > On Wed, Mar 5, 2014 at 1:40 PM, markus wrote: > > On Wed, Mar 05, 2014 at 10:21:07AM -0800, Mark Knecht wrote: > >> On Wed, Mar 5, 2014 at 9:50 AM, Markus wrote: > >> > I am not familiar with this message: > > "Device supports

Re: Slow I/O performance on SAS1064

2014-03-07 Thread markus
On Thu, Mar 06, 2014 at 12:51:27PM -0800, Mark Knecht wrote: On Wed, Mar 5, 2014 at 1:40 PM, markus mar...@kola.li wrote: On Wed, Mar 05, 2014 at 10:21:07AM -0800, Mark Knecht wrote: On Wed, Mar 5, 2014 at 9:50 AM, Markus mar...@kola.li wrote: SNIP I am not familiar with this message:

Re: Slow I/O performance on SAS1064

2014-03-06 Thread Mark Knecht
On Wed, Mar 5, 2014 at 1:40 PM, markus wrote: > On Wed, Mar 05, 2014 at 10:21:07AM -0800, Mark Knecht wrote: >> On Wed, Mar 5, 2014 at 9:50 AM, Markus wrote: >> >> >> > The hdparm result looks like there is somethink not right . There were no >> > features supported but why ? >> >> >> Does the

Re: Slow I/O performance on SAS1064

2014-03-06 Thread Mark Knecht
On Wed, Mar 5, 2014 at 1:40 PM, markus mar...@kola.li wrote: On Wed, Mar 05, 2014 at 10:21:07AM -0800, Mark Knecht wrote: On Wed, Mar 5, 2014 at 9:50 AM, Markus mar...@kola.li wrote: SNIP The hdparm result looks like there is somethink not right . There were no features supported but why

Re: Slow I/O performance on SAS1064

2014-03-05 Thread markus
On Wed, Mar 05, 2014 at 10:21:07AM -0800, Mark Knecht wrote: > On Wed, Mar 5, 2014 at 9:50 AM, Markus wrote: > > > > The hdparm result looks like there is somethink not right . There were no > > features supported but why ? > > > Does the HDD have S.M.A.R.T. features? Possibly > > smartctl

Re: Slow I/O performance on SAS1064

2014-03-05 Thread Mark Knecht
On Wed, Mar 5, 2014 at 9:50 AM, Markus wrote: > The hdparm result looks like there is somethink not right . There were no > features supported but why ? Does the HDD have S.M.A.R.T. features? Possibly smartctl -a /dev/sda would provide some additional visibility? - Mark -- To unsubscribe

Slow I/O performance on SAS1064

2014-03-05 Thread Markus
Hi I have problem with SATA disks at my Sunfire v245 and its lsi controller they are very slow. So I test it with dd and while dd in a nother terminal i see dstat results of sda: Copy from ramdisk to sda. === Test ext4 === DD root@outpost:/ramdisk# dd if=debian-7.4.0-sparc-netinst.iso

Slow I/O performance on SAS1064

2014-03-05 Thread Markus
Hi I have problem with SATA disks at my Sunfire v245 and its lsi controller they are very slow. So I test it with dd and while dd in a nother terminal i see dstat results of sda: Copy from ramdisk to sda. === Test ext4 === DD root@outpost:/ramdisk# dd if=debian-7.4.0-sparc-netinst.iso

Re: Slow I/O performance on SAS1064

2014-03-05 Thread Mark Knecht
On Wed, Mar 5, 2014 at 9:50 AM, Markus mar...@kola.li wrote: SNIP The hdparm result looks like there is somethink not right . There were no features supported but why ? Does the HDD have S.M.A.R.T. features? Possibly smartctl -a /dev/sda would provide some additional visibility? - Mark --

Re: Slow I/O performance on SAS1064

2014-03-05 Thread markus
On Wed, Mar 05, 2014 at 10:21:07AM -0800, Mark Knecht wrote: On Wed, Mar 5, 2014 at 9:50 AM, Markus mar...@kola.li wrote: SNIP The hdparm result looks like there is somethink not right . There were no features supported but why ? Does the HDD have S.M.A.R.T. features? Possibly