Test 8x 16GB on 32GB RAM Server
ada2: <Samsung SSD 840 Series DXT06B0Q> ATA-9 SATA 3.x device
ada2: 600.000MB/s transfers (SATA 3.x, UDMA6, PIO 8192bytes)
ada2: Command Queueing enabled
ada2: 476940MB (976773168 512 byte sectors: 16H 63S/T 16383C)
ada2: Previously was known as ad20
iozone -R -l 8 -u 8 -r 128k -s 16384m -+u -F /mnt/0 /mnt/1 /mnt/2 /mnt/3 /mnt/4 /mnt/5 /mnt/6 /mnt/7
Iozone: Performance Test of File I/O
Version $Revision: 3.397 $
Compiled for 64 bit mode.
Build: freebsd
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.
Ben England.
Run began: Thu Apr 4 13:32:49 2013
Excel chart generation enabled
Record Size 128 KB
File size set to 16777216 KB
CPU utilization Resolution = 0.000 seconds.
CPU utilization Excel chart enabled
Command line used: iozone -R -l 8 -u 8 -r 128k -s 16384m -+u -F /mnt/0 /mnt/1 /mnt/2 /mnt/3 /mnt/4 /mnt/5 /mnt/6 /mnt/7
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 = 8
Max process = 8
Throughput test with 8 processes
Each process writes a 16777216 Kbyte file in 128 Kbyte records
Children see throughput for 8 initial writers = 341829.67 KB/sec
Parent sees throughput for 8 initial writers = 332941.41 KB/sec
Min throughput per process = 41777.26 KB/sec
Max throughput per process = 43736.70 KB/sec
Avg throughput per process = 42728.71 KB/sec
Min xfer = 16025856.00 KB
CPU Utilization: Wall time 393.616 CPU time 550.436 CPU utilization 139.84 %
Children see throughput for 8 rewriters = 322777.81 KB/sec
Parent sees throughput for 8 rewriters = 322729.37 KB/sec
Min throughput per process = 37427.73 KB/sec
Max throughput per process = 43884.37 KB/sec
Avg throughput per process = 40347.23 KB/sec
Min xfer = 14308864.00 KB
CPU utilization: Wall time 382.336 CPU time 213.565 CPU utilization 55.86 %
Children see throughput for 8 readers = 512608.18 KB/sec
Parent sees throughput for 8 readers = 512546.56 KB/sec
Min throughput per process = 57375.52 KB/sec
Max throughput per process = 68847.92 KB/sec
Avg throughput per process = 64076.02 KB/sec
Min xfer = 13981568.00 KB
CPU utilization: Wall time 243.708 CPU time 142.324 CPU utilization 58.40 %
Children see throughput for 8 re-readers = 512178.48 KB/sec
Parent sees throughput for 8 re-readers = 512133.55 KB/sec
Min throughput per process = 60422.52 KB/sec
Max throughput per process = 66913.14 KB/sec
Avg throughput per process = 64022.31 KB/sec
Min xfer = 15150080.00 KB
CPU utilization: Wall time 250.751 CPU time 153.099 CPU utilization 61.06 %
Children see throughput for 8 reverse readers = 601956.09 KB/sec
Parent sees throughput for 8 reverse readers = 601941.13 KB/sec
Min throughput per process = 63409.06 KB/sec
Max throughput per process = 83636.63 KB/sec
Avg throughput per process = 75244.51 KB/sec
Min xfer = 12719872.00 KB
CPU utilization: Wall time 200.601 CPU time 98.322 CPU utilization 49.01 %
Children see throughput for 8 stride readers = 520877.82 KB/sec
Parent sees throughput for 8 stride readers = 520738.82 KB/sec
Min throughput per process = 64537.12 KB/sec
Max throughput per process = 65805.98 KB/sec
Avg throughput per process = 65109.73 KB/sec
Min xfer = 16453760.00 KB
CPU utilization: Wall time 254.953 CPU time 113.887 CPU utilization 44.67 %
Children see throughput for 8 random readers = 524543.39 KB/sec
Parent sees throughput for 8 random readers = 524534.18 KB/sec
Min throughput per process = 64954.17 KB/sec
Max throughput per process = 66153.70 KB/sec
Avg throughput per process = 65567.92 KB/sec
Min xfer = 16472960.00 KB
CPU utilization: Wall time 253.611 CPU time 115.681 CPU utilization 45.61 %
Children see throughput for 8 mixed workload = 278617.52 KB/sec
Parent sees throughput for 8 mixed workload = 118726.60 KB/sec
Min throughput per process = 19902.38 KB/sec
Max throughput per process = 49650.50 KB/sec
Avg throughput per process = 34827.19 KB/sec
Min xfer = 6727808.00 KB
CPU utilization: Wall time 787.832 CPU time 1224.430 CPU utilization 155.42 %
Children see throughput for 8 random writers = 98646.83 KB/sec
Parent sees throughput for 8 random writers = 97500.60 KB/sec
Min throughput per process = 12166.53 KB/sec
Max throughput per process = 12476.86 KB/sec
Avg throughput per process = 12330.85 KB/sec
Min xfer = 16359936.00 KB
CPU utilization: Wall time 1354.977 CPU time 3285.416 CPU utilization 242.47 %
Children see throughput for 8 pwrite writers = 342540.44 KB/sec
Parent sees throughput for 8 pwrite writers = 332509.02 KB/sec
Min throughput per process = 41696.94 KB/sec
Max throughput per process = 43907.32 KB/sec
Avg throughput per process = 42817.56 KB/sec
Min xfer = 15932672.00 KB
CPU utilization: Wall time 393.036 CPU time 526.982 CPU utilization 134.08 %
Children see throughput for 8 pread readers = 514918.66 KB/sec
Parent sees throughput for 8 pread readers = 514869.55 KB/sec
Min throughput per process = 59256.34 KB/sec
Max throughput per process = 71075.32 KB/sec
Avg throughput per process = 64364.83 KB/sec
Min xfer = 13987584.00 KB
CPU utilization: Wall time 236.074 CPU time 132.592 CPU utilization 56.17 %