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1 points·by perfsea·2 tahun yang lalu·0 comments

[untitled]

1 points·by perfsea·2 tahun yang lalu·0 comments

Flamegraphs, Now What?

perfsea.com
1 points·by perfsea·2 tahun yang lalu·1 comments

Ask HN: What is your go to performance optimization?

31 points·by perfsea·2 tahun yang lalu·46 comments

Show HN: Perf Sea – performance engineering for everyone

perfsea.com
3 points·by perfsea·2 tahun yang lalu·0 comments

comments

perfsea
·2 tahun yang lalu·discuss
After years of repeatedly struggling with vtune installs in cloud environments just to get a few specific hw metrics only to fall back on manually building some perf stat events from Perfmon, I finally just built the functionality I always wanted. It automatically generates the set of hardware counters required for your requested metrics, formats it, and then parses the output to evaluate the metric formulas on the raw events
perfsea
·2 tahun yang lalu·discuss
Despite flamegraphs being very intuitive I still have people ask me, what do I look at? Instead of explaining my usual cmd+f's over an over I made a tool which can annotate flamegraphs.

Another downside of flamegraphs is you cannot easily aggregate across multiple stacks without multiple cmd+f's.

The backend is a git repo anyone can add their cmd+f's and optimizations they look for. https://github.com/perfsea/optimizations/blob/main/data/flam...
perfsea
·2 tahun yang lalu·discuss
better than transparent?
perfsea
·2 tahun yang lalu·discuss
I'm conflicted about this one. march native definitely. Have you seen substantial gains from omitting frame pointers?
perfsea
·2 tahun yang lalu·discuss
lol never knew about this thanks. Has this actually slowed down someone's code?
perfsea
·2 tahun yang lalu·discuss
also less logging. Seen this pop up way too many times
perfsea
·2 tahun yang lalu·discuss
I like the idea. Small nit: the scrolling is a little unintuitive.
perfsea
·2 tahun yang lalu·discuss
I wonder how effectively it can utilize all of its execution units for common workloads. Frontend boundedness is often a big issue especially with jit
perfsea
·2 tahun yang lalu·discuss
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