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- Iozone: Performance Test of File I/O
- Version $Revision: 3.420 $
- 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,
- Vangel Bojaxhi, Ben England, Vikentsi Lapa.
- Run began: Sat Nov 23 10:10:22 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 /tmp/0 /tmp/1 /tmp/2 /tmp/3 /tmp/4 /tmp/5 /tmp/6 /tmp/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 = 2108641.94 KB/sec
- Parent sees throughput for 8 initial writers = 1893354.91 KB/sec
- Min throughput per process = 225765.97 KB/sec
- Max throughput per process = 285415.06 KB/sec
- Avg throughput per process = 263580.24 KB/sec
- Min xfer = 13271168.00 KB
- CPU Utilization: Wall time 63.542 CPU time 63.298 CPU utilization 99.62 %
- Children see throughput for 8 rewriters = 1926105.30 KB/sec
- Parent sees throughput for 8 rewriters = 1852127.04 KB/sec
- Min throughput per process = 219884.30 KB/sec
- Max throughput per process = 283911.31 KB/sec
- Avg throughput per process = 240763.16 KB/sec
- Min xfer = 12993664.00 KB
- CPU utilization: Wall time 59.096 CPU time 55.340 CPU utilization 93.64 %
- Children see throughput for 8 readers = 3436913.00 KB/sec
- Parent sees throughput for 8 readers = 3436634.99 KB/sec
- Min throughput per process = 417521.41 KB/sec
- Max throughput per process = 444066.66 KB/sec
- Avg throughput per process = 429614.12 KB/sec
- Min xfer = 15774336.00 KB
- CPU utilization: Wall time 37.783 CPU time 63.669 CPU utilization 168.51 %
- Children see throughput for 8 re-readers = 3551873.88 KB/sec
- Parent sees throughput for 8 re-readers = 3549485.86 KB/sec
- Min throughput per process = 429263.75 KB/sec
- Max throughput per process = 463978.19 KB/sec
- Avg throughput per process = 443984.23 KB/sec
- Min xfer = 15526656.00 KB
- CPU utilization: Wall time 36.170 CPU time 61.719 CPU utilization 170.63 %
- Children see throughput for 8 reverse readers = 3486933.75 KB/sec
- Parent sees throughput for 8 reverse readers = 3485538.01 KB/sec
- Min throughput per process = 420652.06 KB/sec
- Max throughput per process = 448605.41 KB/sec
- Avg throughput per process = 435866.72 KB/sec
- Min xfer = 15732224.00 KB
- CPU utilization: Wall time 37.416 CPU time 62.406 CPU utilization 166.79 %
- Children see throughput for 8 stride readers = 3304420.69 KB/sec
- Parent sees throughput for 8 stride readers = 3304169.20 KB/sec
- Min throughput per process = 408330.91 KB/sec
- Max throughput per process = 414873.69 KB/sec
- Avg throughput per process = 413052.59 KB/sec
- Min xfer = 16512640.00 KB
- CPU utilization: Wall time 40.440 CPU time 79.247 CPU utilization 195.96 %
- Children see throughput for 8 random readers = 1829319.41 KB/sec
- Parent sees throughput for 8 random readers = 1829193.33 KB/sec
- Min throughput per process = 226749.11 KB/sec
- Max throughput per process = 229466.92 KB/sec
- Avg throughput per process = 228664.93 KB/sec
- Min xfer = 16578688.00 KB
- CPU utilization: Wall time 73.115 CPU time 34.592 CPU utilization 47.31 %
- Children see throughput for 8 mixed workload = 661635.17 KB/sec
- Parent sees throughput for 8 mixed workload = 603956.55 KB/sec
- Min throughput per process = 8979.32 KB/sec
- Max throughput per process = 162288.03 KB/sec
- Avg throughput per process = 82704.40 KB/sec
- Min xfer = 928384.00 KB
- CPU utilization: Wall time 110.897 CPU time 28.993 CPU utilization 26.14 %
- Children see throughput for 8 random writers = 596152.74 KB/sec
- Parent sees throughput for 8 random writers = 552922.17 KB/sec
- Min throughput per process = 69219.80 KB/sec
- Max throughput per process = 79797.17 KB/sec
- Avg throughput per process = 74519.09 KB/sec
- Min xfer = 14553344.00 KB
- CPU utilization: Wall time 225.669 CPU time 74.003 CPU utilization 32.79 %
- Children see throughput for 8 pwrite writers = 1014321.10 KB/sec
- Parent sees throughput for 8 pwrite writers = 961102.04 KB/sec
- Min throughput per process = 116531.62 KB/sec
- Max throughput per process = 137000.52 KB/sec
- Avg throughput per process = 126790.14 KB/sec
- Min xfer = 14270464.00 KB
- CPU utilization: Wall time 127.746 CPU time 64.938 CPU utilization 50.83 %
- Children see throughput for 8 pread readers = 3666070.88 KB/sec
- Parent sees throughput for 8 pread readers = 3661134.10 KB/sec
- Min throughput per process = 315554.53 KB/sec
- Max throughput per process = 544557.19 KB/sec
- Avg throughput per process = 458258.86 KB/sec
- Min xfer = 9723776.00 KB
- CPU utilization: Wall time 30.868 CPU time 43.161 CPU utilization 139.82 %
- Children see throughput for 8 fwriters = 1888017.75 KB/sec
- Parent sees throughput for 8 fwriters = 1748797.56 KB/sec
- Min throughput per process = 223181.62 KB/sec
- Max throughput per process = 256585.09 KB/sec
- Avg throughput per process = 236002.22 KB/sec
- Min xfer = 16777216.00 KB
- CPU utilization: Wall time 75.173 CPU time 66.390 CPU utilization 88.32 %
- Children see throughput for 8 freaders = 3401337.72 KB/sec
- Parent sees throughput for 8 freaders = 3367719.72 KB/sec
- Min throughput per process = 420973.69 KB/sec
- Max throughput per process = 429304.81 KB/sec
- Avg throughput per process = 425167.21 KB/sec
- Min xfer = 16777216.00 KB
- CPU utilization: Wall time 39.853 CPU time 74.073 CPU utilization 185.86 %
- "Throughput report Y-axis is type of test X-axis is number of processes"
- "Record size = 128 Kbytes "
- "Output is in Kbytes/sec"
- " Initial write " 2108641.94
- " Rewrite " 1926105.30
- " Read " 3436913.00
- " Re-read " 3551873.88
- " Reverse Read " 3486933.75
- " Stride read " 3304420.69
- " Random read " 1829319.41
- " Mixed workload " 661635.17
- " Random write " 596152.74
- " Pwrite " 1014321.10
- " Pread " 3666070.88
- " Fwrite " 1888017.75
- " Fread " 3401337.72
- "CPU utilization report Y-axis is type of test X-axis is number of processes"
- "Record size = 128 Kbytes "
- "Output is in CPU%"
- " Initial write " 99.62
- " Rewrite " 93.64
- " Read " 168.51
- " Re-read " 170.63
- " Reverse Read " 166.79
- " Stride read " 195.96
- " Random read " 47.31
- " Mixed workload " 26.14
- " Random write " 32.79
- " Pwrite " 50.83
- " Pread " 139.82
- " Fwrite " 88.32
- " Fread " 185.86
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