[Beowulf] bad bonnie++ in 14-drive RAID 10

Eugen Leitl eugen at leitl.org
Wed Sep 16 03:27:30 PDT 2009

Below bonnie++ stats are pretty bad for a RAID 10 of 14 SATA
drives (WD RE4, 2 TByte), right?

[oracle at localhost data]$ bonnie++ -d /data/blah
Writing with putc()...done
Writing intelligently...done
Reading with getc()...done
Reading intelligently...done
start 'em...done...done...done...
Create files in sequential order...done.
Stat files in sequential order...done.
Delete files in sequential order...done.
Create files in random order...done.
Stat files in random order...done.
Delete files in random order...done.
Version  1.03       ------Sequential Output------ --Sequential Input- --Random-
                    -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine        Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP  /sec %CP
localhost.lo 47320M 82406  99 466201  46 124266  17 73482  96 541644  33 415.4   0
                    ------Sequential Create------ --------Random Create--------
                    -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
              files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
                 16  5488   4 +++++ +++  4292   0  3883   3 +++++ +++  2580   1

Eugen* Leitl <a href="http://leitl.org">leitl</a> http://leitl.org
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