Skip to content

Instantly share code, notes, and snippets.

@hfm
Created January 30, 2013 07:38
Show Gist options
  • Select an option

  • Save hfm/4671472 to your computer and use it in GitHub Desktop.

Select an option

Save hfm/4671472 to your computer and use it in GitHub Desktop.
A benchmark test for SD card "Lexar SDHCcard Class10 UHS-1 32GB LSD32GBJ200"
$ iozone -t 2 -s 512M -r 128K -i 0 -i 1 -i 2
Iozone: Performance Test of File I/O
Version $Revision: 3.413 $
Compiled for 64 bit mode.
Build: macosx
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: Tue Jan 29 23:00:04 2013
File size set to 524288 KB
Record Size 128 KB
Command line used: iozone -t 2 -s 512M -r 128K -i 0 -i 1 -i 2
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.
Throughput test with 2 processes
Each process writes a 524288 Kbyte file in 128 Kbyte records
Children see throughput for 2 initial writers = 29047.11 KB/sec
Parent sees throughput for 2 initial writers = 26677.55 KB/sec
Min throughput per process = 14307.64 KB/sec
Max throughput per process = 14739.47 KB/sec
Avg throughput per process = 14523.56 KB/sec
Min xfer = 508928.00 KB
Children see throughput for 2 rewriters = 30469.63 KB/sec
Parent sees throughput for 2 rewriters = 28157.35 KB/sec
Min throughput per process = 12306.44 KB/sec
Max throughput per process = 18163.20 KB/sec
Avg throughput per process = 15234.82 KB/sec
Min xfer = 405760.00 KB
Children see throughput for 2 readers = 9793642.50 KB/sec
Parent sees throughput for 2 readers = 9765756.47 KB/sec
Min throughput per process = 4874730.50 KB/sec
Max throughput per process = 4918912.00 KB/sec
Avg throughput per process = 4896821.25 KB/sec
Min xfer = 519680.00 KB
Children see throughput for 2 re-readers = 9261350.00 KB/sec
Parent sees throughput for 2 re-readers = 9236118.61 KB/sec
Min throughput per process = 4560983.50 KB/sec
Max throughput per process = 4700366.50 KB/sec
Avg throughput per process = 4630675.00 KB/sec
Min xfer = 508928.00 KB
Children see throughput for 2 random readers = 10001251.00 KB/sec
Parent sees throughput for 2 random readers = 9971483.59 KB/sec
Min throughput per process = 4963845.00 KB/sec
Max throughput per process = 5037406.00 KB/sec
Avg throughput per process = 5000625.50 KB/sec
Min xfer = 516736.00 KB
Children see throughput for 2 random writers = 2108.68 KB/sec
Parent sees throughput for 2 random writers = 799.42 KB/sec
Min throughput per process = 277.28 KB/sec
Max throughput per process = 1831.40 KB/sec
Avg throughput per process = 1054.34 KB/sec
Min xfer = 130560.00 KB
iozone test complete.
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment