Questions tagged [profiling]
The profiling tag has no summary.
71 questions
0 votes
1 answer
517 views
how to generate a flamegraph when using jeprof
I am using this command to generate jemolloc output svg file: jeprof --svg texhub-server --base=texhub.out.1.0.i0.heap texhub.out.1.* > output.svg I read document from here(https://github.com/...
- 791
9 votes
1 answer
2k views
Does mtrace() still work in modern distros?
tldr: Does mtrace still work or am I just doing it wrong? I was attempting to use mtrace and have been unable to get it to write data to a file. I followed the instructions in man 3 mtrace: t_mtrace.c:...
- 265
0 votes
1 answer
249 views
Which tools for micro-benchmarking?
I'm not sure which tool to use for micro-benchmarking a C program. I would like to measure both: Memory usage, RSS ( Resident Set Size ) CPU cycles I did use perf record -g and perf script piped ...
0 votes
1 answer
234 views
How to measure mmap I/O latency?
I have an application which appears to be slowing/blocking at the same time there's a lot of disk I/O going on, so I suspect it's I/O operations within the application which are blocking. I can't ...
- 73.9k
1 vote
0 answers
274 views
How do I report the max RSS of a cgroup?
I would like to monitor the peak RSS a cgroup has used since it was created. By "peak RSS" I mean: the sum of all processes' RSS at the point in time where that sum is the greatest. I ...
2 votes
1 answer
350 views
How can I profile virtual memory accesses made in user mode and kernel mode?
I would like to generate a log of all virtual memory accesses performed in user mode and kernel mode as a result of running some program. Besides collecting memory access locations, I also want to ...
- 21
2 votes
1 answer
392 views
How do I profile a real world application?
I run Debian 10 and since two weeks or so the PDF reader Atril (a fork of Evince) takes 25 seconds to start. Previously it started almost instantly. Now I'm trying to find out what causes the delay. I ...
- 1,988
0 votes
1 answer
671 views
thread profiling and monitoring
how can I get lock time values specifically of the threads of any process? in linux.. I was using the command /proc/pid/stat but I am unable to determine which values are of lock time.
3 votes
1 answer
2k views
Strace shows that the time spent in syscalls is much longer than the total time elapsed. Why?
I am running an AI inference program based on Tensorflow-gpu. By running /usr/bin/strace -c -f /usr/bin/time ./program, I got the following output: <my program's output> 367.91user 1032.14system ...
- 73
4 votes
0 answers
410 views
What are profiling tools available for bash/shell script [duplicate]
I have a project which is entirely written in shell scripts. I find some of the modules in my code takes a lot of time, I need to reduce it functionality wise. What are profiling tools available for ...
- 203
1 vote
0 answers
476 views
How can I measure time spent in child processes?
I have a command which invokes another command (synchronously) a couple of times. Is there a way to get the total time spent in the subcommand? In other words, is there a command similar to time but ...
- 1,988
3 votes
4 answers
3k views
How to profile wall-clock time?
In my program, real time duration is sometimes as much as 3 times that of cpu time. This is a single thread application that does a lot of memory allocation and NFS base read/write. So my doubt is ...
- 3,093
2 votes
0 answers
602 views
How to take stack samples using `perf` based on wall-clock time
I am trying to use Linux's perf_events framework to investigate an issue with an application on one of our servers. Based on my reading about the perf tool, collecting stacks is relatively ...
- 121
0 votes
0 answers
944 views
High-frequency performance counter sampling using perf record/report
I want to retrieve performance counter counts at a high frequency (i.e. 100-200Hz) using the perf tool (similar in functionality to https://github.com/RRZE-HPC/likwid/wiki/likwid-perfctr#the-timeline-...
- 121
1 vote
2 answers
1k views
profiling a linux command to get metrics
I am trying to unzip a huge .gz file. I would like to know if there is a way we could profile this command to get the CPU utilization while the command is executing I am looking for something like ...
- 111