lttng−iolatencystats−mi − LTTng analyses IO latency statistics machine interface
usage: lttng−iolatencystats−mi [−h] [−r REFRESH] [−−gmt] [−−skip−validation]
[−−begin BEGIN] [−−end END] [−−period PERIOD]
[−−period−captures PERIOD_CAPTURES] [−−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] [−−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 PERIOD
Period definition
−−period−captures PERIOD_CAPTURES
Period captures definition
−−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
−−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