====== Ubuntu - Benchmark - Disk Speedtest using iozone ======
**iozone** performs a large number of performance benchmark tests against a drive.
The output produced by iozone is very brief though. The default command line option **-a** is used for full automatic mode, in which iozone will test block sizes ranging from 4k to 16M and file sizes ranging from 64k to 512M.
----
Lets do a test using this -a option and see what happens.
iozone -a /dev/sda1
result:
Auto Mode
Command line used: iozone -a /dev/sda1
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.
random random bkwd record stride
KB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread
64
4
172945
581241
1186518
1563640
877647
374157
484928
240642
985893
633901
652867
1017433
1450619
64
8
25549
345725
516034
2199541
1229452
338782
415666
470666
1393409
799055
753110
1335973
2071017
64
16
68231
810152
1887586
2559717
1562320
791144
1309119
222313
1421031
790115
538032
694760
2462048
64
32
338417
799198
1884189
2898148
1733988
864568
1421505
771741
1734912
1085107
1332240
1644921
2788472
64
64
31775
811096
1999576
3202752
1832347
385702
1421148
771134
1733146
864224
942626
2006627
3057595
128
4
269540
699126
1318194
1525916
390257
407760
790259
154585
649980
680625
684461
1254971
1487281
128
8
284495
837250
1941107
2289303
1420662
779975
825344
558859
1505947
815392
618235
969958
2130559
128
16
277078
482933
1112790
2559604
1505182
630556
1560617
624143
1880886
954878
962868
1682473
2464581
128
32
254925
646594
1999671
2845290
2100561
554291
1581773
723415
2095628
1057335
1049712
2061550
2850336
128
64
182344
871319
2412939
609440
2249929
941090
1827150
1007712
2249754
1113206
1578345
2132336
3052578
128
128
301873
595485
2788953
2555042
2131042
963078
762218
494164
1937294
564075
1016490
2067590
2559306