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How to profile the IO activities triggered by the java process?

Currently, I know there are some tools for profiling the CPU/memory for the java process.

When I wanted to track how the java process interacts with IO, I didn't find any tool for checking the details, especially for which threads/call-stacks, usages, and files.

The tools I can use are some OS-level commands like dstat.

Is there any tool for profiling DISK IO for java?

Solution

  • Is there any tool for profiling DISK IO for java?

    Some JVM profilers have probes that deal with file access. JProfiler for example has a file probe that measures read and write operations for both java.io and java.nio.

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    Measurements are resolved by file:

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    For performance considerations, the hot spots view of the file probe shows which files are responsible for most of the time spent in disk I/O and gives you expandable back traces for each file.

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    Disclaimer: My company develops JProfiler