Hacker News: Replies to Uptrenda

New comment by Asmod4n in "Epoll vs. io_uring in Linux"

Asmod4n — Sun, 21 Jun 2026 05:15:46 +0000

The main reason why it gets disabled is fixed now, the latest RC got cBPF support and as such you can restrict what OPs can be run now instead of just fully disabling it.

New comment by Cloudef in "Epoll vs. io_uring in Linux"

Cloudef — Sun, 21 Jun 2026 03:02:06 +0000

Quite depends, I had times when my posix emulation of io_uring (with poll, not epoll) was faster than io_uring. For large zero-copy buffers, io_uring is king however. Also io_uring is useful even for non asynchronous IO as it can implement chain of operations as single atomic operation (mkdir + open it for example).

For something like networking, if you are maximizing packets per second, you'll hit kernel limits[1] very quickly and instead have to start leveraging features like GSO/GRO or completely bypass the network stack.

1: https://github.com/axboe/liburing/discussions/1346

New comment by csdreamer7 in "Epoll vs. io_uring in Linux"

csdreamer7 — Sun, 21 Jun 2026 01:23:26 +0000

RHEL 9 and 10 now fully support io_uring by default. It is very recent, but this covers a lot of corporate Linux installs. Gemini 'said' Ubuntu and SuSE support it as well, but did not provide any links to prove it.

https://access.redhat.com/solutions/4723221

Go should reconsider support. They should have a 'go' at it.

New comment by omcnoe in "Epoll vs. io_uring in Linux"

omcnoe — Sun, 21 Jun 2026 01:11:35 +0000

For a project like Go, wouldn't it be an option to do one-time iouring feature detection in the runtime startup? Exploits are an issue for the entire OS, not the program choosing to use iouring, yeah?

New comment by happyPersonR in "Epoll vs. io_uring in Linux"

happyPersonR — Sun, 21 Jun 2026 00:31:23 +0000

Any kind of poll mode networking:

Rdma, dpdk, io_uring it’s really kind of up to the user to do the memory isolation

In io_urings case tho, you can’t do much because the rings are in the kernel.

I’m hopeful though that with Llm things will get better.

But it’s just hard problem to solve . Very difficult to do in the kernel itself, and folks don’t really even understand tuning for it.

New comment by devin in "Ask HN: Will programmers write more efficient code during the memory shortage?"

devin — Fri, 19 Jun 2026 23:01:43 +0000

I can refer you to some documentation on the topic. ;)

New comment by matthewbarras in "Show HN: FablePool – pool money behind a prompt, and Fable builds it in public"

matthewbarras — Fri, 12 Jun 2026 00:32:17 +0000

there's a job going if you fancy it... pool steersman

New comment by byzantinegene in "OpenAI mulls slashing prices as it competes with Anthropic for users"

byzantinegene — Thu, 11 Jun 2026 09:22:58 +0000

you're not a corporation, corporations are price-sensitive and the decision-makers are typically not the end-users.

New comment by mentalgear in "OpenAI mulls slashing prices as it competes with Anthropic for users"

mentalgear — Thu, 11 Jun 2026 06:49:43 +0000

And openAI's discounts are not enforcing that it is a quality product.

New comment by philipwhiuk in "Show HN: Gitdot – A better GitHub. Open-source, written in Rust"

philipwhiuk — Tue, 09 Jun 2026 12:41:09 +0000

Be honest and transparent about who you are what you have and what you did. If it took you a year of solid development, it'll probably look like it did. If it took you 15 minutes in Claude... well it probably looks like it did too.

If you are YC backed then say "YC Winter 2026" or whatever in your title frankly - people will work it out anyway.

They said it was a better GitHub, which is a very high bar (despite the regular complaints about GitHub). They also said it was anti-AI, despite it being vibe-coded.

Also, know your competitive space. Posting on HN is like pitching - not knowing about your competitors is not really going to work - you need an answer for, for example, why someone picks Gitdot over SourceHut.

New comment by ericyd in "Show HN: Gitdot – A better GitHub. Open-source, written in Rust"

ericyd — Tue, 09 Jun 2026 11:48:15 +0000

If you aren't willing to be ripped apart then posting isn't the right move, simple as that. Public critique is part of sharing your work in any space, HN included.

New comment by tuxxin in "The complete IPv4 address space, mapped"

tuxxin — Tue, 09 Jun 2026 04:28:11 +0000

Yes, currently 12 POP's. See worldip.io/infrastructure

New comment by chris_money202 in "Claude Code as a Daily Driver: Claude.md, Skills, Subagents, Plugins, and MCPs"

chris_money202 — Wed, 27 May 2026 13:03:19 +0000

I agree, I find that just telling claude to use the CLIs I would have used anyway in the prompt works just fine. Use gh to do X, use az to do Y, build using Z. The harness handles the rest. All these MCPs, Skills, plugins, etc are just noise

New comment by 0xpgm in "--dangerously-skip-reading-code"

0xpgm — Sun, 24 May 2026 12:20:15 +0000

Still more to come I think. Until all the major AI companies IPO starting this year.