.. option:: --terse-version=type
- Set terse version output format (default 3, or 2 or 4).
+ Set terse version output format (default 3, or 2 or 4 or 5).
.. option:: --version
.. option:: buffer_pattern=str
- If set, fio will fill the I/O buffers with this pattern. If not set, the
- contents of I/O buffers is defined by the other options related to buffer
- contents. The setting can be any pattern of bytes, and can be prefixed with
- 0x for hex values. It may also be a string, where the string must then be
- wrapped with ``""``, e.g.::
+ If set, fio will fill the I/O buffers with this pattern or with the contents
+ of a file. If not set, the contents of I/O buffers are defined by the other
+ options related to buffer contents. The setting can be any pattern of bytes,
+ and can be prefixed with 0x for hex values. It may also be a string, where
+ the string must then be wrapped with ``""``. Or it may also be a filename,
+ where the filename must be wrapped with ``''`` in which case the file is
+ opened and read. Note that not all the file contents will be read if that
+ would cause the buffers to overflow. So, for example::
+
+ buffer_pattern='filename'
+
+ or::
buffer_pattern="abcd"
Also you can combine everything together in any order::
- buffer_pattern=0xdeadface"abcd"-12
+ buffer_pattern=0xdeadface"abcd"-12'filename'
.. option:: dedupe_percentage=int
.. option:: ignore_error=str
Sometimes you want to ignore some errors during test in that case you can
- specify error list for each error type.
+ specify error list for each error type, instead of only being able to
+ ignore the default 'non-fatal error' using :option:`continue_on_error`.
``ignore_error=READ_ERR_LIST,WRITE_ERR_LIST,VERIFY_ERR_LIST`` errors for
given error type is separated with ':'. Error may be symbol ('ENOSPC',
'ENOMEM') or integer. Example::
ignore_error=EAGAIN,ENOSPC:122
This option will ignore EAGAIN from READ, and ENOSPC and 122(EDQUOT) from
- WRITE.
+ WRITE. This option works by overriding :option:`continue_on_error` with
+ the list of errors for each error type if any.
.. option:: error_dump=bool
changed for some reason, this number will be incremented by 1 to signify that
change.
-Split up, the format is as follows:
+Split up, the format is as follows (comments in brackets denote when a
+field was introduced or whether its specific to some terse version):
::
- terse version, fio version, jobname, groupid, error
+ terse version, fio version [v3], jobname, groupid, error
READ status::
Completion latency: min, max, mean, stdev (usec)
Completion latency percentiles: 20 fields (see below)
Total latency: min, max, mean, stdev (usec)
- Bw (KiB/s): min, max, aggregate percentage of total, mean, stdev
+ Bw (KiB/s): min, max, aggregate percentage of total, mean, stdev, number of samples [v5]
+ IOPS [v5]: min, max, mean, stdev, number of samples
WRITE status:
Total IO (KiB), bandwidth (KiB/sec), IOPS, runtime (msec)
Submission latency: min, max, mean, stdev (usec)
- Completion latency: min, max, mean, stdev(usec)
+ Completion latency: min, max, mean, stdev (usec)
Completion latency percentiles: 20 fields (see below)
Total latency: min, max, mean, stdev (usec)
- Bw (KiB/s): min, max, aggregate percentage of total, mean, stdev
+ Bw (KiB/s): min, max, aggregate percentage of total, mean, stdev, number of samples [v5]
+ IOPS [v5]: min, max, mean, stdev, number of samples
+
+ TRIM status [all but version 3]:
+
+ Fields are similar to READ/WRITE status.
CPU usage::
<=2, 4, 10, 20, 50, 100, 250, 500, 750, 1000, 2000, >=2000
- Disk utilization::
+ Disk utilization [v3]::
Disk name, Read ios, write ios,
Read merges, write merges,
For disk utilization, all disks used by fio are shown. So for each disk there
will be a disk utilization section.
+Below is a single line containing short names for each of the fields in the
+minimal output v3, separated by semicolons:
+
+terse_version_3;fio_version;jobname;groupid;error;read_kb;read_bandwidth;read_iops;read_runtime_ms;read_slat_min;read_slat_max;read_slat_mean;read_slat_dev;read_clat_max;read_clat_min;read_clat_mean;read_clat_dev;read_clat_pct01;read_clat_pct02;read_clat_pct03;read_clat_pct04;read_clat_pct05;read_clat_pct06;read_clat_pct07;read_clat_pct08;read_clat_pct09;read_clat_pct10;read_clat_pct11;read_clat_pct12;read_clat_pct13;read_clat_pct14;read_clat_pct15;read_clat_pct16;read_clat_pct17;read_clat_pct18;read_clat_pct19;read_clat_pct20;read_tlat_min;read_lat_max;read_lat_mean;read_lat_dev;read_bw_min;read_bw_max;read_bw_agg_pct;read_bw_mean;read_bw_dev;write_kb;write_bandwidth;write_iops;write_runtime_ms;write_slat_min;write_slat_max;write_slat_mean;write_slat_dev;write_clat_max;write_clat_min;write_clat_mean;write_clat_dev;write_clat_pct01;write_clat_pct02;write_clat_pct03;write_clat_pct04;write_clat_pct05;write_clat_pct06;write_clat_pct07;write_clat_pct08;write_clat_pct09;write_clat_pct10;write_clat_pct11;write_clat_pct12;write_clat_pct13;write_clat_pct14;write_clat_pct15;write_clat_pct16;write_clat_pct17;write_clat_pct18;write_clat_pct19;write_clat_pct20;write_tlat_min;write_lat_max;write_lat_mean;write_lat_dev;write_bw_min;write_bw_max;write_bw_agg_pct;write_bw_mean;write_bw_dev;cpu_user;cpu_sys;cpu_csw;cpu_mjf;pu_minf;iodepth_1;iodepth_2;iodepth_4;iodepth_8;iodepth_16;iodepth_32;iodepth_64;lat_2us;lat_4us;lat_10us;lat_20us;lat_50us;lat_100us;lat_250us;lat_500us;lat_750us;lat_1000us;lat_2ms;lat_4ms;lat_10ms;lat_20ms;lat_50ms;lat_100ms;lat_250ms;lat_500ms;lat_750ms;lat_1000ms;lat_2000ms;lat_over_2000ms;disk_name;disk_read_iops;disk_write_iops;disk_read_merges;disk_write_merges;disk_read_ticks;write_ticks;disk_queue_time;disk_util
+
Trace file format
-----------------
projects / fio.git / blobdiff