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- $ sudo sg_inq /dev/sg0
- standard INQUIRY:
- PQual=0 Device_type=0 RMB=0 LU_CONG=0 version=0x01 [SCSI-1]
- [AERC=0] [TrmTsk=0] NormACA=0 HiSUP=0 Resp_data_format=1
- SCCS=0 ACC=0 TPGS=1 3PC=0 Protect=0 [BQue=0]
- EncServ=0 MultiP=0 [MChngr=0] [ACKREQQ=0] Addr16=0
- [RelAdr=0] WBus16=0 Sync=0 [Linked=0] [TranDis=0] CmdQue=0
- length=36 (0x24) Peripheral device type: disk
- Vendor identification: IMPRIMIS
- Product identification: 94601-15
- Product revision level: 4638
- $ sudo sg_read if=/dev/sg0 bs=512 count=1MB mmap=1 time=2
- Time from second SCSI READ command to end was 390.767231 secs, 1.31 MB/sec
- Average number of SCSI READ commands per second was 19.99
- 1000000+0 records in, SCSI READ commands issued: 7813
- sudo scsi_readcap /dev/sg0
- sg_readcap /dev/sg0
- Read Capacity results:
- Last logical block address=2031704 (0x1f0058), Number of blocks=2031705
- Logical block length=512 bytes
- Hence:
- Device size: 1040232960 bytes, 992.0 MiB, 1.04 GB
- sudo iozone -R -b bench_ST41200N_test.xls -r 8k -s 10m -l 2 -u 10
- Iozone: Performance Test of File I/O
- Version $Revision: 3.429 $
- Compiled for 32 bit mode.
- Build: linux-powerpc
- Contributors:William Norcott, Don Capps, Isom Crawford, Kirby Collins
- Al Slater, Scott Rhine, Mike Wisner, Ken Goss
- Steve Landherr, Brad Smith, Mark Kelly, Dr. Alain CYR,
- Randy Dunlap, Mark Montague, Dan Million, Gavin Brebner,
- Jean-Marc Zucconi, Jeff Blomberg, Benny Halevy, Dave Boone,
- Erik Habbinga, Kris Strecker, Walter Wong, Joshua Root,
- Fabrice Bacchella, Zhenghua Xue, Qin Li, Darren Sawyer,
- Vangel Bojaxhi, Ben England, Vikentsi Lapa.
- Run began: Mon Sep 19 18:05:25 2016
- Excel chart generation enabled
- Record Size 8 kB
- File size set to 10240 kB
- Command line used: iozone -R -b bench_ST41200N_test.xls -r 8k -s 10m -l 2 -u 10
- Output is in kBytes/sec
- Time Resolution = 0.000001 seconds.
- Processor cache size set to 1024 kBytes.
- Processor cache line size set to 32 bytes.
- File stride size set to 17 * record size.
- Min process = 2
- Max process = 10
- Throughput test with 2 processes
- Each process writes a 10240 kByte file in 8 kByte records
- Children see throughput for 2 initial writers = 928238.44 kB/sec
- Parent sees throughput for 2 initial writers = 827.98 kB/sec
- Min throughput per process = 382431.62 kB/sec
- Max throughput per process = 545806.81 kB/sec
- Avg throughput per process = 464119.22 kB/sec
- Min xfer = 9360.00 kB
- Children see throughput for 2 rewriters = 1127809.19 kB/sec
- Parent sees throughput for 2 rewriters = 2054.51 kB/sec
- Min throughput per process = 559803.06 kB/sec
- Max throughput per process = 568006.12 kB/sec
- Avg throughput per process = 563904.59 kB/sec
- Min xfer = 8120.00 kB
- Children see throughput for 2 readers = 1095884.00 kB/sec
- Parent sees throughput for 2 readers = 398117.85 kB/sec
- Min throughput per process = 0.00 kB/sec
- Max throughput per process = 1095884.00 kB/sec
- Avg throughput per process = 547942.00 kB/sec
- Min xfer = 0.00 kB
- Children see throughput for 2 re-readers = 1311050.56 kB/sec
- Parent sees throughput for 2 re-readers = 672219.47 kB/sec
- Min throughput per process = 569837.38 kB/sec
- Max throughput per process = 741213.19 kB/sec
- Avg throughput per process = 655525.28 kB/sec
- Min xfer = 8896.00 kB
- Children see throughput for 2 reverse readers = 1252164.00 kB/sec
- Parent sees throughput for 2 reverse readers = 882108.79 kB/sec
- Min throughput per process = 582939.12 kB/sec
- Max throughput per process = 669224.88 kB/sec
- Avg throughput per process = 626082.00 kB/sec
- Min xfer = 8032.00 kB
- Children see throughput for 2 stride readers = 1403851.44 kB/sec
- Parent sees throughput for 2 stride readers = 870980.76 kB/sec
- Min throughput per process = 574832.81 kB/sec
- Max throughput per process = 829018.62 kB/sec
- Avg throughput per process = 701925.72 kB/sec
- Min xfer = 8184.00 kB
- Children see throughput for 2 random readers = 1270326.00 kB/sec
- Parent sees throughput for 2 random readers = 889479.56 kB/sec
- Min throughput per process = 574963.69 kB/sec
- Children see throughput for 2 mixed workload = 1150406.31 kB/sec
- Parent sees throughput for 2 mixed workload = 3821.88 kB/sec
- Min throughput per process = 530683.12 kB/sec
- Max throughput per process = 619723.19 kB/sec
- Avg throughput per process = 575203.16 kB/sec
- Min xfer = 8864.00 kB
- Children see throughput for 2 random writers = 1834135.00 kB/sec
- Parent sees throughput for 2 random writers = 2048.21 kB/sec
- Min throughput per process = 915755.56 kB/sec
- Max throughput per process = 918379.44 kB/sec
- Avg throughput per process = 917067.50 kB/sec
- Min xfer = 10240.00 kB
- Children see throughput for 2 fwriters = 1581469.81 kB/sec
- Parent sees throughput for 2 fwriters = 2037.88 kB/sec
- Min throughput per process = 789388.31 kB/sec
- Max throughput per process = 792081.50 kB/sec
- Avg throughput per process = 790734.91 kB/sec
- Min xfer = 10240.00 kB
- Children see throughput for 2 freaders = 2087680.75 kB/sec
- Parent sees throughput for 2 freaders = 907923.20 kB/sec
- Min throughput per process = 1003032.88 kB/sec
- Max throughput per process = 1084647.88 kB/sec
- Avg throughput per process = 1043840.38 kB/sec
- Min xfer = 10240.00 kB
- "Throughput report Y-axis is type of test X-axis is number of processes"
- "Record size = 8 kBytes "
- "Output is in kBytes/sec"
- " Initial write " 928238.44 1169375.03 1185035.31 1381609.64 1115303.61 1555758.34 1535551.15 1509617.00 1119634.10
- " Rewrite " 1127809.19 1986911.31 2435197.75 2923622.94 2482213.75 2089158.91 2285656.84 3159214.94 2839005.14
- " Read " 1095884.00 3016090.75 2789627.38 3047681.34 2893689.78 2813825.64 3707657.70 3640758.12 3917274.67
- " Re-read " 1311050.56 2062953.53 2501256.69 3185493.09 2984677.28 2863572.41 2505558.39 3565197.80 2185057.69
- " Reverse Read " 1252164.00 1820253.23 2509423.31 2417357.16 2755423.31 2331870.38 2181392.05 2602461.78 2299708.12
- " Stride read " 1403851.44 2591733.06 2338705.59 1951073.78 2308152.31 2492577.34 2294999.50 2508182.42 3185632.14
- " Random read " 1270326.00 2409561.28 2631054.06 2398524.56 2600579.69 2580663.72 2465103.86 2567615.22 2524690.61
- " Mixed workload " 1150406.31 2392734.31 2338418.34 2825495.44 2372169.59 2453635.33 2354719.09 3033257.72 2267707.74
- " Random write " 1834135.00 2241261.38 2312293.03 2413412.31 2332646.00 2171165.36 2126678.94 2127266.94 1924227.40
- " Fwrite " 1581469.81 1655954.97 1901244.34 1923663.78 2186411.03 2461963.73 1677589.62 2577030.42 2560346.59
- " Fread " 2087680.75 2864828.12 3217238.31 2834673.28 2904338.00 3649308.84 3887171.31 3791070.53 3643380.41
- iozone test complete.
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