Perf Tool monitoring by PID
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I'm using linux perf tool to monitor the performance of some processes. The documentation tells that you can flag it to collect profiles on per-thread, per-process and per-cpu basis.
I get that the processor would have performance registers collecting event-counts for a given physical-core and it's resources (e.g. L1-caches).
How does perf or any such performance monitoring tool, measure counters per-process or per-thread basis? For example, let's say I'm monitoring L1-cache-misses, now since the cache is shared for all processes running on that CPU, how does perf determine how many misses came from a given process or a given thread?
linux process profiling perf
edited Aug 20 at 12:55
slm♦
238k65493664
asked Aug 20 at 5:03
Nikhilesh Singh
166
add a comment |Â
up vote
3
down vote
favorite
I'm using linux perf tool to monitor the performance of some processes. The documentation tells that you can flag it to collect profiles on per-thread, per-process and per-cpu basis.
I get that the processor would have performance registers collecting event-counts for a given physical-core and it's resources (e.g. L1-caches).
How does perf or any such performance monitoring tool, measure counters per-process or per-thread basis? For example, let's say I'm monitoring L1-cache-misses, now since the cache is shared for all processes running on that CPU, how does perf determine how many misses came from a given process or a given thread?
linux process profiling perf
edited Aug 20 at 12:55
slm♦
238k65493664
asked Aug 20 at 5:03
Nikhilesh Singh
166
"How does perf or any such performance monitoring tool, measure counters per-process or per-thread basis? " this Q could be overly broad.
– slm♦
Aug 20 at 13:10
1
dtrace type monitoring was built into the Linux kernel - brendangregg.com/blog/2016-10-27/dtrace-for-linux-2016.html. Methods used to collect perf data are covered here - brendangregg.com/perf.html.
– slm♦
Aug 20 at 13:17
add a comment |Â
up vote
3
down vote
favorite
up vote
3
down vote
favorite
I'm using linux perf tool to monitor the performance of some processes. The documentation tells that you can flag it to collect profiles on per-thread, per-process and per-cpu basis.
I get that the processor would have performance registers collecting event-counts for a given physical-core and it's resources (e.g. L1-caches).
How does perf or any such performance monitoring tool, measure counters per-process or per-thread basis? For example, let's say I'm monitoring L1-cache-misses, now since the cache is shared for all processes running on that CPU, how does perf determine how many misses came from a given process or a given thread?
linux process profiling perf
edited Aug 20 at 12:55
slm♦
238k65493664
asked Aug 20 at 5:03
Nikhilesh Singh
166
I'm using linux perf tool to monitor the performance of some processes. The documentation tells that you can flag it to collect profiles on per-thread, per-process and per-cpu basis.
I get that the processor would have performance registers collecting event-counts for a given physical-core and it's resources (e.g. L1-caches).
How does perf or any such performance monitoring tool, measure counters per-process or per-thread basis? For example, let's say I'm monitoring L1-cache-misses, now since the cache is shared for all processes running on that CPU, how does perf determine how many misses came from a given process or a given thread?
linux process profiling perf
linux process profiling perf
edited Aug 20 at 12:55
slm♦
238k65493664
asked Aug 20 at 5:03
Nikhilesh Singh
166
edited Aug 20 at 12:55
slm♦
238k65493664
asked Aug 20 at 5:03
Nikhilesh Singh
166
edited Aug 20 at 12:55
slm♦
238k65493664
edited Aug 20 at 12:55
slm♦
238k65493664
edited Aug 20 at 12:55
slm♦
238k65493664
238k65493664
asked Aug 20 at 5:03
Nikhilesh Singh
166
asked Aug 20 at 5:03
Nikhilesh Singh
166
asked Aug 20 at 5:03
Nikhilesh Singh
166
166
"How does perf or any such performance monitoring tool, measure counters per-process or per-thread basis? " this Q could be overly broad.
– slm♦
Aug 20 at 13:10
1
dtrace type monitoring was built into the Linux kernel - brendangregg.com/blog/2016-10-27/dtrace-for-linux-2016.html. Methods used to collect perf data are covered here - brendangregg.com/perf.html.
– slm♦
Aug 20 at 13:17
add a comment |Â
"How does perf or any such performance monitoring tool, measure counters per-process or per-thread basis? " this Q could be overly broad.
– slm♦
Aug 20 at 13:10
1
dtrace type monitoring was built into the Linux kernel - brendangregg.com/blog/2016-10-27/dtrace-for-linux-2016.html. Methods used to collect perf data are covered here - brendangregg.com/perf.html.
– slm♦
Aug 20 at 13:17
"How does perf or any such performance monitoring tool, measure counters per-process or per-thread basis? " this Q could be overly broad.
– slm♦
Aug 20 at 13:10
"How does perf or any such performance monitoring tool, measure counters per-process or per-thread basis? " this Q could be overly broad.
– slm♦
Aug 20 at 13:10
1
1
dtrace type monitoring was built into the Linux kernel - brendangregg.com/blog/2016-10-27/dtrace-for-linux-2016.html. Methods used to collect perf data are covered here - brendangregg.com/perf.html.
– slm♦
Aug 20 at 13:17
dtrace type monitoring was built into the Linux kernel - brendangregg.com/blog/2016-10-27/dtrace-for-linux-2016.html. Methods used to collect perf data are covered here - brendangregg.com/perf.html.
– slm♦
Aug 20 at 13:17
add a comment |Â
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"How does perf or any such performance monitoring tool, measure counters per-process or per-thread basis? " this Q could be overly broad.
– slm♦
Aug 20 at 13:10
1
dtrace type monitoring was built into the Linux kernel - brendangregg.com/blog/2016-10-27/dtrace-for-linux-2016.html. Methods used to collect perf data are covered here - brendangregg.com/perf.html.
– slm♦
Aug 20 at 13:17