perf
Fewer than 5 people recommend it so far, so there's no written verdict. Here is what commenters said.
3recommend
1warn against
Nov 11, 2025first mention
Jul 26, 2026latest mention
Why people recommend it
“Or just run `perf top` and see if anything stands out.”
“Getting familiar with linux's perf [1] tool is also helpful”
Show 1 more
“Try the relatively new top-down microarchitectural analysis in perf”
Caveats and dissent
“GDB and perf are not even in the same league”
Threads where it came up
- I Cannot SSH into My Server Anymore (and That's Fine) 2 mentions
- Nothing works and everyone is euphoric 1 mention
- item 46259583 1 mention
- Super-Flat ASTs 1 mention
- Latency Profiling in Python: From Code Bottlenecks to Observability 1 mention
- Leaving Intel 1 mention
Data: perf.json. Quotes are verbatim; the verdict and theme labels are written by a model from these comments, and every clause links to its sources.
All comments 8
“Or just run `perf top` and see if anything stands out.”
“In this case I used `perf` utility, but only because the server does not have a proper observability tool.”
“run `perf`, generate flame graph, copy the .svg to the PC over SFTP”
“GDB and perf are not even in the same league”
“Getting familiar with linux's perf [1] tool is also helpful”
“perf is a sampling profiler, not a function tracing profiler”
“Try the relatively new top-down microarchitectural analysis in perf”
“I used perf to look at cache miss rates and memory bandwidth during runs.”