Determine average and maximum execution time of a task by using ftrace/perf
Clash Royale CLAN TAG#URR8PPP
I've gathered some traces containing scheduling events ('sched:*') by using ftrace and perf record. By analyzing the results many of my questions could already be answered.
However, I was wondering if there is a practical way to use the results of ftrace or perf to determine the average execution time of a process and its maximum execution time before the respective process is blocked or preempted.
The output of perf script contains timestamps of the collected events but I cannot find an option to easily analyze time intervals like the time between wakeup and preemption/blocking...
linux process scheduling perf tracing
edited Jan 22 at 17:21
Rui F Ribeiro
40k1479135
asked Jan 22 at 17:05
Iniesta8Iniesta8
61
add a comment |
I've gathered some traces containing scheduling events ('sched:*') by using ftrace and perf record. By analyzing the results many of my questions could already be answered.
However, I was wondering if there is a practical way to use the results of ftrace or perf to determine the average execution time of a process and its maximum execution time before the respective process is blocked or preempted.
The output of perf script contains timestamps of the collected events but I cannot find an option to easily analyze time intervals like the time between wakeup and preemption/blocking...
linux process scheduling perf tracing
edited Jan 22 at 17:21
Rui F Ribeiro
40k1479135
asked Jan 22 at 17:05
Iniesta8Iniesta8
61
add a comment |
I've gathered some traces containing scheduling events ('sched:*') by using ftrace and perf record. By analyzing the results many of my questions could already be answered.
However, I was wondering if there is a practical way to use the results of ftrace or perf to determine the average execution time of a process and its maximum execution time before the respective process is blocked or preempted.
The output of perf script contains timestamps of the collected events but I cannot find an option to easily analyze time intervals like the time between wakeup and preemption/blocking...
linux process scheduling perf tracing
edited Jan 22 at 17:21
Rui F Ribeiro
40k1479135
asked Jan 22 at 17:05
Iniesta8Iniesta8
61
I've gathered some traces containing scheduling events ('sched:*') by using ftrace and perf record. By analyzing the results many of my questions could already be answered.
However, I was wondering if there is a practical way to use the results of ftrace or perf to determine the average execution time of a process and its maximum execution time before the respective process is blocked or preempted.
The output of perf script contains timestamps of the collected events but I cannot find an option to easily analyze time intervals like the time between wakeup and preemption/blocking...
linux process scheduling perf tracing
linux process scheduling perf tracing
edited Jan 22 at 17:21
Rui F Ribeiro
40k1479135
asked Jan 22 at 17:05
Iniesta8Iniesta8
61
edited Jan 22 at 17:21
Rui F Ribeiro
40k1479135
asked Jan 22 at 17:05
Iniesta8Iniesta8
61
edited Jan 22 at 17:21
Rui F Ribeiro
40k1479135
edited Jan 22 at 17:21
Rui F Ribeiro
40k1479135
edited Jan 22 at 17:21
Rui F Ribeiro
40k1479135
40k1479135
asked Jan 22 at 17:05
Iniesta8Iniesta8
61
asked Jan 22 at 17:05
Iniesta8Iniesta8
61
asked Jan 22 at 17:05
Iniesta8Iniesta8
61
61
add a comment |
add a comment |
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