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lttng-schedfreq - Online in the Cloud

Run lttng-schedfreq in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command lttng-schedfreq that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

PROGRAM:

NAME


lttng-schedfreq - LTTng analyses Scheduler frequency

DESCRIPTION


usage: lttng-schedfreq [-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] [-V] [--no-progress] [--min
MIN] [--max MAX] [--procname PROCNAME] [--tid TID] [--freq] [--freq-resolution
FREQ_RESOLUTION] [--freq-uniform] [--freq-series] [--limit LIMIT] [--top] [--log]
[--stats] [--total] [--per-tid] [--per-prio] <path/to/trace>

The sched 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]

-V, --version
show program's version number and exit

--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

--procname PROCNAME
Filter the results only for this list of process names

--tid TID
Filter the results only for this list of TIDs

--freq Output the frequency distribution of sched switch latencies

--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

--limit LIMIT
Limit to top X (default = 10)

--top Output the top sched switch latencies

--log Output the sched switches in chronological order

--stats
Output sched switch statistics

--total
Group all results (applies to stats and freq)

--per-tid
Group results per-TID (applies to stats and freq) (default)

--per-prio
Group results per-prio (applies to stats and freq)

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