Viewing profile — brancz

We write quite a bit of BPF at work for the Parca-Agent project[1]. And we find that even C is sometimes too high level of a language paired with modern optimization techniques as …

It’s about density in a datacenter. With this you have 1PB in 4 drives, fitting in a 1u rack, which is just incredible. Also these drives don’t use regular SATA or SAS, they use PC…

I also find this misleading, and could be solved so easily by just explaining that of course varints need resolving and things will just happen lazily (presumably, I didn’t read th…

Thank you! Overhead ultimately depends on the frequency, it defaults to 19hz per core, at which it’s less than 1%, which is tried and tested with all sorts of super heavy python, J…

Already been done: 1) native unwinding: https://www.polarsignals.com/blog/posts/2022/11/29/dwarf-bas... 2) python: https://www.polarsignals.com/blog/posts/2023/10/04/profiling... B…

We’re working hard to bring a lot of Strobelight to everyone through Parca[0] as OSS and Polar Signals[1] as the commercial version. Some parts already exists much to come this yea…

The point of the first one is that you can create snapshots from within the product where profiling data isn't forever. This is so you can use the pprof.me link in a GitHub issue, …

Keep an eye out on our blog we're working on some interesting things in this area!

I mentioned this on another thread as well, but the point isn't that perf can't catch something like this, but it's that having continuous profiling set up makes it way easier to m…

Nobody is saying that a regular profiling tool can't detect it. However, it's one of those things that if you don't profile it regularly then these are easy things to miss. With a …

Prometheus gives you CPU/memory total metrics, the profiler used in the article gets you much higher resolution: down to the line number of your source code. If you're looking to o…

Thank you for the feedback! Quickly worked with the S2 team to get the screenshot from the change added (it's just enabling the hardware acceleration feature in the sha2 crate)!

I'm familiar with the paper, but it doesn't improve the situation in terms of LBR availability on cloud providers, does it?

If I'm understanding correctly, this is collecting LBR data through hardware support for PGO/AutoFDO, right?

There isn’t, because the indented way to use Parca is to profile production and always-on. However, we wouldn’t be against adding a mode like this! FWIW both the server and the age…

Glad you liked it! Yeah, we worked with a customer who really needs this badly and has done some unspeakable things to get by until now.

Thanks for submitting! We know HN has a sweet spot for LuaJIT, so we figured it would eventually end up here. Quick summary: this post dives into the gory details of how we impleme…

Thanks for posting! We missed this being submitted yesterday, so let us know if you have any questions, we'll be sure to watch this thread!

There certainly are, but I’d recommend making the first priority to look for who is actually going to be your most valuable business partner, their location in my opinion doesn’t r…

Thank you!

Having gone through this a couple of times, I'll say that all of this is true, but in practice, I find the actual founding process not very complicated with neo-banks that understa…