gnurizen

5 ms·

1.
by gnurizen 3mo ago
A lot of times the performance is data dependent, like randomized data can result in poor warp utilization where as sorted data can be much more efficient because you have less warps sitting around idle. We have an upcoming blog post on dec
2.
by gnurizen 3mo ago
Thanks! I think most performance debugging happens during development, what we're bringing to the table is exposure of system behavior in production which often diverges because of changes in the shape of workloads from dev, which are
3.
Show HN: Continuous Nvidia CUDA PC Sampling Profiler(polarsignals.com)
14 points by gnurizen 3mo ago|6 comments
4.
Bringing USDT Power to Parca(polarsignals.com)
5 points by gnurizen 9mo ago|1 comments
5.
by gnurizen 9mo ago
Details of how we integrated USDT support in Parca modeled after libbpf.
6.
by gnurizen 11mo ago
CUPTI is kind of a choose your own adventure thing, as you subscribe to more stuff the overhead goes up, this is kind of minimalist profiler that just subscribes to the kernel launches and nothing else. Still to your point depending on ker
7.
by gnurizen 11mo ago
This profiler is focused on kernel execution but we do scrape high level metrics ( https://www.polarsignals.com/blog/posts/2025/06/04/latest-in... which is based on https://github.com&#x2F
8.
by gnurizen 11mo ago
Yeah the quickstart guide covers docker, k8s and "raw" binary options: https://www.parca.dev/docs/quickstart/
9.
by gnurizen 11mo ago
Author here, would be happy to field any questions or feedback!
10.
Show HN: eBPF memory profiling at OOM kill time(polarsignals.com)
6 points by gnurizen 1y ago|1 comments
11.
by gnurizen 2y ago
It should work to profile neovim, does it use the luajit shared library or is it statically linked? You could run parca-agent and set up a filter to discard all non-neovim samples and leave a parca instance running locally and just restart
12.
by gnurizen 2y ago
I wrote the code and the blog, happy to answer any questions/comments. Very eager to have folks try it out and give feedback! Like is my meme game strong or very strong? J/K There's some missing bits around FFI and callbacks
13.
by gnurizen 2y ago
Thanks for the kind words Mike, will correct ASAP! Kinda surprised that’s the only thing I got wrong, thanks for taking the time to read it.
14.
by gnurizen 3y ago
The answer you are looking for is no. No one can translate this into what humans should eat to avoid heart disease, that will require a ton more research. We still haven't even figured out whether eggs are good or bad for you.
15.
by gnurizen 3y ago
I would bet a dollar inhibiting TOR via protein restriction turns out to be one of those things thats good for mice but bad for humans. Whatever aging gains you get are probably over-ridden by earlier onset of sarcopenia. Too many studies s
16.
by gnurizen 5y ago
Anybody else chuckling at the irony here that eBPF is inspired by dtrace which was invented by Cantrill?