fio Documentation, Release 3.27-43-g9ce6-dirty
; -- start job file including.fio --
[global]
filename=/tmp/test
filesize=1m
include glob-include.fio
[test]
rw=randread
bs=4k
time_based=1
runtime=10
include test-include.fio
; -- end job file including.fio --
; -- start job file glob-include.fio --
thread=1
group_reporting=1
; -- end job file glob-include.fio --
; -- start job file test-include.fio --
ioengine=libaio
iodepth=4
; -- end job file test-include.fio --
Settings pulled into a section apply to that section only (except global section). Include directives may be nested in
that any included file may contain further include directive(s). Include files may not contain [] sections.
1.11.1 Environment variables
Fio also supports environment variable expansion in job files. Any sub-string of the form ${VARNAME} as part of an
option value (in other words, on the right of the ‘=’), will be expanded to the value of the environment variable called
VARNAME. If no such environment variable is defined, or VARNAME is the empty string, the empty string will be
substituted.
As an example, let’s look at a sample fio invocation and job file:
$ SIZE=64m NUMJOBS=4 fio jobfile.fio
; -- start job file --
[random-writers]
rw=randwrite
size=${SIZE}
numjobs=${NUMJOBS}
; -- end job file --
This will expand to the following equivalent job file at runtime:
; -- start job file --
[random-writers]
rw=randwrite
size=64m
numjobs=4
; -- end job file --
Fio ships with a few example job files, you can also look there for inspiration.
12 Chapter 1. fio - Flexible I/O tester rev. 3.27
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