“gee, we have a 6-digit PID, might as well make it work to a million!”
Here’s the first of several commits to support this, and here’s the highest load averages I’ve ever seen.
15 Replies to “Over 9,000, times 100 (processes)”
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A running description of activity related to DragonFly BSD.
Erlang must be great to run on DFly given how well it runs parallel software.
Dragonfly is really beginning to shine! Congrats!
Really seems like an appropriate time for the dragonfly perf benchmarks to be updated vs other bsd/Linux.
https://www.dragonflybsd.org/performance/
@Anonymous
You’re volunteering? Great! Can’t wait to see them.
i don’t have the technical expertise to do so.
But I’m happy to donate money for someone to perform just a benchmark.
@Anonymous
Everything you need to re-create the benchmark is written in here -> http://lists.dragonflybsd.org/pipermail/users/attachments/20140310/4250b961/attachment-0002.pdf
Hacker news picked up the story and its front page.
https://news.ycombinator.com/item?id=15020622
Is this possible on FreeBSD?
Anonymous – I think FreeBSD has 5-digit process IDs, so no, it would not work. There’s probably a lot more to it than just ID length, though.
Diving through FreeBSD’s code, MAXPROC is set to (20 + 16 * maxusers), and the Handbook says “maxusers is automatically sized at boot based on the amount of memory available in the system,” with “values of 64, 128, and 256” not being uncommon. So for a system with 256 maxusers, that’d be a maxproc of 4116 if I’m understanding the documentation and doing the math right.
The sysctl(3) manpage also provides a small code example to find the maximum number of process allowed on that particular system, as well.
DragonFly on a Threadripper or EPYC build is going to be a sight to see!
Re: threadripper / epyc.
If someone wants to donate hardware to dragonflybsd, here’s how
https://www.dragonflybsd.org/donations/
Anonymous,
Is this an official request from a Dragonfly developer for hardware? Are they seeking donations for TR/Epyc hardware?
I’m the Anonymous who wrote the donation post (but a different anonymous from the previous commenters).
No, not an official request.
Just a bystander pointing out where someone can donate to dragonfly if they have the financial means to do so.