DESCRIPTION

usage: lttng-iolatencyfreq [-h] [-r REFRESH] [--gmt] [--skip-validation]

[--begin BEGIN] [--end END]

[--period-begin PERIOD_BEGIN] [--period-end PERIOD_END] [--period-begin-key PERIOD_BEGIN_KEY] [--period-end-key PERIOD_END_KEY] [--period-key-value PERIOD_KEY_VALUE] [--cpu CPU] [--timerange TIMERANGE] [--progress-use-size] [--no-intersection] [-V] [--debug] [--no-color] [--no-progress] [--procname PROCNAME] [--tid TID] [--min MIN] [--max MAX] [--log] [--limit LIMIT] [--top] [--stats] [--freq] [--freq-resolution FREQ_RESOLUTION] [--freq-uniform] [--freq-series] [--usage] [--minsize MINSIZE] [--maxsize MAXSIZE] <path/to/trace>

The I/O command.

positional arguments:

<path/to/trace>

trace path

optional arguments:

-h, --help

show this help message and exit

-r REFRESH, --refresh REFRESH

Refresh period, with optional units suffix (default units: s)

--gmt

Manipulate timestamps based on GMT instead of local time

--skip-validation

Skip the trace validation

--begin BEGIN

start time: hh:mm:ss[.nnnnnnnnn]

--end END

end time: hh:mm:ss[.nnnnnnnnn]

--period-begin PERIOD_BEGIN

Analysis period start marker event name

--period-end PERIOD_END

Analysis period end marker event name (requires --period-begin)

--period-begin-key PERIOD_BEGIN_KEY

Optional, list of event field names used to match period markers (default: cpu_id)

--period-end-key PERIOD_END_KEY

Optional, list of event field names used to match period marker. If none specified, use the same --period-begin-key

--period-key-value PERIOD_KEY_VALUE

Optional, define a fixed key value to which a period must correspond to be considered.

--cpu CPU

Filter the results only for this list of CPU IDs

--timerange TIMERANGE

time range: [begin,end]

--progress-use-size

use trace size to approximate progress

--no-intersection

disable stream intersection mode

-V, --version

show program's version number and exit

--debug

Enable debug mode (or set LTTNG_ANALYSES_DEBUG environment variable)

--no-color

Disable colored output

--no-progress

Don't display the progress bar

--procname PROCNAME

Filter the results only for this list of process names

--tid TID

Filter the results only for this list of TIDs

--min MIN

Filter out durations shorter than min usec

--max MAX

Filter out durations longer than max usec

--log

Output the I/O requests in chronological order

--limit LIMIT

Limit to top X (default = 10)

--top

Output the top I/O latencies by category

--stats

Output the I/O latency statistics

--freq

Output the I/O latency frequency distribution

--freq-resolution FREQ_RESOLUTION

Frequency distribution resolution (default 20)

--freq-uniform

Use a uniform resolution across distributions

--freq-series

Consolidate frequency distribution histogram as a single one

--usage

Output the I/O usage

--minsize MINSIZE

Filter out, I/O operations working with less that minsize bytes

--maxsize MAXSIZE

Filter out, I/O operations working with more that maxsize bytes