Re: SAS drives seem slow

2009-02-26 Thread Ivan Voras
Josh Paetzel wrote: I have a 3ware 9690SA SAS RAID controller in a PCI-e 8x slot with Fujitsu MBA series 15k SAS drives attached, and the array is coming up as: da0 at twa0 bus 0 target 0 lun 0 da0: AMCC 9690SA-4I DISK 4.06 Fixed Direct Access SCSI-5 device da0: 100.000MB/s transfers da0:

Re: SAS drives seem slow

2009-02-26 Thread Josh Paetzel
On Feb 26, 2009, at 12:28 AM, Wojciech Puchar wrote: FreeBSD services.tcbug.org 8.0-CURRENT FreeBSD 8.0-CURRENT #0: Mon Feb 16 21:07:14 UTC 2009 root@:/usr/obj/usr/src/sys/SERVICES amd64 But 6.x and 7.x give similar results. The disks themselves are capable of sequential read/write

SAS drives seem slow

2009-02-25 Thread Josh Paetzel
I have a 3ware 9690SA SAS RAID controller in a PCI-e 8x slot with Fujitsu MBA series 15k SAS drives attached, and the array is coming up as: da0 at twa0 bus 0 target 0 lun 0 da0: AMCC 9690SA-4I DISK 4.06 Fixed Direct Access SCSI-5 device da0: 100.000MB/s transfers da0: 138272MB (283181056

Re: SAS drives seem slow

2009-02-25 Thread Wojciech Puchar
FreeBSD services.tcbug.org 8.0-CURRENT FreeBSD 8.0-CURRENT #0: Mon Feb 16 21:07:14 UTC 2009 root@:/usr/obj/usr/src/sys/SERVICES amd64 But 6.x and 7.x give similar results. The disks themselves are capable of sequential read/write in the 180 Meg/sec range, so I'm trying to understand why