Date: Mon, 7 Mar 2016 12:48:36 +0200 From: byhkaan <byhkaan@gmail.com> To: freebsd-scsi@freebsd.org Subject: Toshiba SAS disk Message-ID: <56DD5C84.6070502@gmail.com>
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Hi, I have a dell perc h330 card runnig at HBA mode with TOSHIBA AL13SEB300 series 10k sas drives. These disk are running on ubuntu as expected defined from spec sheet ,but at FreeBSD10 they are acting like limited to 20MB/s bandwidth. I also tried the mrsas driver instead of mfi but the results are same. Is anyone see the same problem ? linux # dd if=/dev/zero of=/dev/sdb bs=1M count=1000 oflag=dsync 1000+0 records in 1000+0 records out 1048576000 bytes (1.0 GB) copied, 11.0951 s, 94.5 MB/s freebsd10 (FreeBSD 10.2-STABLE #2 r291926M) # dd if=/dev/zero of=/dev/da4 bs=1M count=1000 1000+0 records in 1000+0 records out 1048576000 bytes transferred in 51.243550 secs (20462595 bytes/sec) # camcontrol inquiry da4 pass4: <TOSHIBA AL13SEB300 DE0D> Fixed Direct Access SPC-4 SCSI device pass4: Serial Number 15O0A0FOFRD6 pass4: 150.000MB/s transfers, Command Queueing Enabled # diskinfo -vt da4 da4 512 # sectorsize 300000000000 # mediasize in bytes (279G) 585937500 # mediasize in sectors 0 # stripesize 0 # stripeoffset 9010 # Cylinders according to firmware. 255 # Heads according to firmware. 255 # Sectors according to firmware. 15O0A0FOFRD6 # Disk ident. Seek times: Full stroke: 250 iter in 2.790492 sec = 11.162 msec Half stroke: 250 iter in 1.870304 sec = 7.481 msec Quarter stroke: 500 iter in 3.109343 sec = 6.219 msec Short forward: 400 iter in 1.106922 sec = 2.767 msec Short backward: 400 iter in 1.412916 sec = 3.532 msec Seq outer: 2048 iter in 0.103199 sec = 0.050 msec Seq inner: 2048 iter in 0.104223 sec = 0.051 msec Transfer rates: outside: 102400 kbytes in 0.530404 sec = 193060 kbytes/sec middle: 102400 kbytes in 0.672639 sec = 152236 kbytes/sec inside: 102400 kbytes in 0.853422 sec = 119988 kbytes/sec thanks,
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