Recent questions tagged profiling

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profiling - Good profiler for Fortran and MPI

Which profiler do you use for Fortran code base with MPI in it? gprof doesn't seem to be working correctly ... of the fortran functions appear. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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profiling - How to profile a bash shell script slow startup?

My bash shell takes up to 3-4 seconds to start up, while if I start it with --norc it runs immediately. ... take the most time to execute? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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profiling - Tool for analyzing large Java heap dumps

I have a HotSpot JVM heap dump that I would like to analyze. The VM ran with -Xmx31g, and the heap dump ... other tools that work on the pre-structured data. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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profiling - How can I profile Python code line-by-line?

I've been using cProfile to profile my code, and it's been working great. I also use gprof2dot.py to visualize the ... the "func(a)" call. Does that make sense? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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448 views

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profiling - Simplest way to profile a PHP script

What's the easiest way to profile a PHP script? I'd love tacking something on that shows me a dump of all ... lot of trouble to sprinkle that all over my code. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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580 views

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profiling - Is it possible to collect performance metrics in CUDA per region inside the kernel?

I have the following fragment of code for which I want to count the number of executed instructions. #include < ... -collect-performance-metrics-in-cuda-per-region-inside-the-kern...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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profiling - Large gaps in chrome profiler flame chart

I am trying to speed up a slow three.js based app. Here's Chrome's flame chart for 2 frames: I ... //stackoverflow.com/questions/65892507/large-gaps-in-chrome-profiler-flame-chart...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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446 views

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profiling - Tool for analyzing large Java heap dumps

I have a HotSpot JVM heap dump that I would like to analyze. The VM ran with -Xmx31g, and the heap dump file is ... -java-heap-dump-when-local-memory-is-less-than-the-size-of-the...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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499 views

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profiling - Interactive Python: cannot get `%lprun` to work, although line_profiler is imported properly

Problem Most iPython "magic functions" work fine for me right off the bat: %hist, %time, %prun, etc. However, I ... -python-cannot-get-lprun-to-work-although-line-profiler-is-impor...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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647 views

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profiling - Interactive Python: cannot get `%lprun` to work, although line_profiler is imported properly

Problem Most iPython "magic functions" work fine for me right off the bat: %hist, %time, %prun, etc. However, I ... -python-cannot-get-lprun-to-work-although-line-profiler-is-impor...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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604 views

1 answer

profiling - Java Flight Recorder - no Live Objects

I'm running JFR on JDK 1.8_261. I'm running my application using those VM options: -XX:+UseG1GC -XX:+ ... screenshot. What do I need to do to enable Live Objects?...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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536 views

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profiling - Java Flight Recorder - no Live Objects

I'm running JFR on JDK 1.8_261. I'm running my application using those VM options: -XX:+UseG1GC -XX:+ ... screenshot. What do I need to do to enable Live Objects?...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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540 views

1 answer

profiling - Java Flight Recorder - find file descriptor leak

M Java application probably has a file descriptor leak, since I'm getting a Too many open files exception. I'm ... JFR for finding code which open files but not closes them?...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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534 views

1 answer

profiling - How to find out which services consume most of connections in Spring data jpa application Using HikariCP

I am using Spring Data in my spring boot application and my data base is postgreSQL, I have some jobs ... /profiling tool for showing which service consumes which connection ?...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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655 views

1 answer

profiling - Linux perf call-graph max-stack does not work properly

As discussed in Profiling my program with linux perf and different call graph modes gives different results, sometime when the ... why this happens? My perf version is 4.15.18...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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