xstack

Passive eBPF Linux stack profiling without tracepoints. I just added another tool into my 0x.tools toolset: With xstack, you can passively sample both kernel stacks and user stacks (as long as framepointers are present) with a pretty minimalistic tool, with no direct impact to your critical application processes! While xstack itself is just a data extraction tool, you probably want to summarize/profile all those thread states and stack profiles. Here’s an example of piping xstack output to flamelens to immediately display a (terminal) flamegraph from the sampled data: - Linux, Oracle, SQL performance tuning and troubleshooting training & writing. Here's the latest eBPF performance tool of mine - xstack.

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