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[untitled]

1 points·by perfsea·2 năm trước·0 comments

[untitled]

1 points·by perfsea·2 năm trước·0 comments

Flamegraphs, Now What?

perfsea.com
1 points·by perfsea·2 năm trước·1 comments

Ask HN: What is your go to performance optimization?

31 points·by perfsea·2 năm trước·46 comments

Show HN: Perf Sea – performance engineering for everyone

perfsea.com
3 points·by perfsea·2 năm trước·0 comments

comments

perfsea
·2 năm trước·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 năm trước·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 năm trước·discuss
better than transparent?
perfsea
·2 năm trước·discuss
I'm conflicted about this one. march native definitely. Have you seen substantial gains from omitting frame pointers?
perfsea
·2 năm trước·discuss
lol never knew about this thanks. Has this actually slowed down someone's code?
perfsea
·2 năm trước·discuss
also less logging. Seen this pop up way too many times
perfsea
·2 năm trước·discuss
I like the idea. Small nit: the scrolling is a little unintuitive.
perfsea
·2 năm trước·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 năm trước·discuss
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