Hackers' Pub

Syntax	Description	Examples
`"` keyword `"`	Finds the string within quotes, including spaces. Case-insensitive. (Escape quotes inside with `\"`)	`"Hackers' Pub"`
`from:` handle	Finds content written by the specified user.	`from:hongminhee` `from:hongminhee@hollo.social`
`lang:` ISO 639-1	Finds content written in the specified language.	`lang:en`
`#` tag	Finds content with the specified tag. Case-insensitive.	`#HackersPub`
condition condition	Finds content that satisfies both conditions on either side of the space (logical AND).	`"Hackers' Pub" lang:en`
condition `OR` condition	Finds content that satisfies at least one of the conditions on either side of the OR operator (logical OR).	`#HackersPub OR "Hackers' Pub" lang:en`
`(` condition `)`	Combines the operators within the parentheses first.	`(#HackersPub OR "Hackers' Pub" OR "Hackers Pub") lang:en`

Hacker News 100 @hn100@social.lansky.name

1/14/2026, 1:40:09 AM

Public

A 40-line fix eliminated a 400x performance gap

Link: https://questdb.com/blog/jvm-current-thread-user-time/
Discussion: https://news.ycombinator.com/item?id=46609630

How a 40-Line Fix Eliminated a 400x Performance Gap | QuestDB

A deep dive into an OpenJDK commit that replaced slow /proc file parsing with a single syscall, revealing obscure Linux kernel internals and a 20-year-old optimization opportunity.

questdb.com · QuestDB

If you have a fediverse account, you can quote this note from your own instance. Search https://social.lansky.name/users/hn100/statuses/115890900805988885 on your instance and quote it. (Note that quoting is not supported in Mastodon.)