forkrun
Shares rank 42 of 86 privilege escalation tools by recommenders
People recommend forkrun as a fast shell parallelizer that cuts overhead without script rewrites; the main caveat is that it relies on Linux-only system calls.
People recommend forkrun as a fast shell parallelizer that cuts overhead without script rewrites; the main caveat is that it relies on Linux-only system calls.
10 people gave an opinion
- recommend it
- 8
- criticize it
- 2
- approval share
- 80%
Recommended in 2 of 13 months
- November 2025: not recommended
- December 2025: not recommended
- January 2026: not recommended
- February 2026: not recommended
- March 2026: recommended
- April 2026: recommended
- May 2026: not recommended
- June 2026: not recommended
- July 2026: not recommended
- August 2026: not recommended
- September 2026: not recommended
- October 2026: not recommended
- November 2026: not recommended (month in progress)
Why it doesn’t carry the badge
- 8 people recommend itNeeds 10 or more, not met.
- 4 recommenders for every criticNeeds 2 to 1 or better, met.
- Recommended in 2 of 13 monthsNeeds 4 or more, not met.
The same three rules apply to every product, and the badge can’t be bought. How the badge works
What people say about it
The reasons people give, with the number of comments that give each one. Open a reason to read what they said.
Why people recommend it
Each mark is one comment
Fast with little parallelization overhead
“in its fastest mode, forkrun gets very close to the practical dispatch limit for this kind of workload.”
Comment from 2 Apr 2026 in “Show HN: Forkrun – NUMA-aware shell parallelizer (50×–400× faster than parallel)” “forkrun is optimized for plowing through MASSIVE amount of very fast running inputs”
Comment from 2 Apr 2026 in “Show HN: Forkrun – NUMA-aware shell parallelizer (50×–400× faster than parallel)” “you could eliminate a HUGE amount of the overhead of parallelizing things in shell”
Comment from 31 Mar 2026 in “Show HN: Forkrun – NUMA-aware shell parallelizer (50×–400× faster than parallel)” - Comment from 31 Mar 2026 in “Show HN: Forkrun – NUMA-aware shell parallelizer (50×–400× faster than parallel)”
Keeps CPU cores busy and balanced
“which gives a pretty straightforward story - forkrun is 300x faster here because it is utilizing 300x more CPU for actually doing work.”
Comment from 1 Apr 2026 on Hacker News “I am using a 9950x3D processor and didn't see any slow-down nor cpu sitting idle”
Comment from 31 Mar 2026 in “Show HN: Forkrun – NUMA-aware shell parallelizer (50×–400× faster than parallel)” “It is pretty darn good at dynamically pinning these down pretty quickly”
Comment from 1 Apr 2026 in “Show HN: Forkrun – NUMA-aware shell parallelizer (50×–400× faster than parallel)” Places memory on the right NUMA node
“forkrun immediately puts it on the correct numa node's memory when it comes in”
Comment from 1 Apr 2026 in “Show HN: Forkrun – NUMA-aware shell parallelizer (50×–400× faster than parallel)” “It is pretty darn good at dynamically pinning these down pretty quickly”
Comment from 1 Apr 2026 in “Show HN: Forkrun – NUMA-aware shell parallelizer (50×–400× faster than parallel)” Ten years of focused development
“forkrun is the culmination of a 10-year-long journey focused on "how to make shell parallelization fast"”
Comment from 27 Mar 2026 in “Show HN: Forkrun – NUMA-aware shell parallelizer (50×–400× faster than parallel)” “Given the expertise at display and the 10yr on/off journey in building Forkrun”
Comment from 1 Apr 2026 in “Show HN: Forkrun – NUMA-aware shell parallelizer (50×–400× faster than parallel)” “I can appreciate your craft”
Comment from 31 Mar 2026 in “Show HN: Forkrun – NUMA-aware shell parallelizer (50×–400× faster than parallel)”
What people warn about
Each mark is one comment
Relies on Linux-only system calls
“forkrun makes heavy use of linux-only syscalls”
Comment from 1 Apr 2026 in “Show HN: Forkrun – NUMA-aware shell parallelizer (50×–400× faster than parallel)”
Other privilege escalation tools people recommend
The four most recommended other privilege escalation tools, with the same counts for each, so you can compare like for like. The tick on each bar marks the 2 to 1 line the badge needs.
See all 86 privilege escalation tools, rankedWhat people said
All 21 comments that mention it, newest first. Each links to the original comment.
“in its fastest mode, forkrun gets very close to the practical dispatch limit for this kind of workload.”
“forkrun is optimized for plowing through MASSIVE amount of very fast running inputs”
“Setting -j doesn't seem to help any.”
“Given the expertise at display and the 10yr on/off journey in building Forkrun”
“forkrun immediately puts it on the correct numa node's memory when it comes in”
“forkrun makes heavy use of linux-only syscalls”
“forkrun takes over the "last mile" of actually running things on a given single node”
“It is pretty darn good at dynamically pinning these down pretty quickly”
“which gives a pretty straightforward story - forkrun is 300x faster here because it is utilizing 300x more CPU for actually doing work.”
“part of a vanishingly small number of projects written since the 1990s that get real work done”
“This is a solid two times slower than `rush` in my test case.”
“FWIW, I actually did play with Forkrun now, and it seems pretty neat!”
“forkrun takes it so much further”
“I like it, and I hope it's soon going to be available in various Linux distributions”
“you could eliminate a HUGE amount of the overhead of parallelizing things in shell”
“extreme performance without needing to rewrite anything”
“I can appreciate your craft”
“I am using a 9950x3D processor and didn't see any slow-down nor cpu sitting idle”
“Thank you, I'm installing this right now while I read the rest of your comment.”
“Nobody should install something that new”
“forkrun is the culmination of a 10-year-long journey focused on "how to make shell parallelization fast"”
Counts come from 1,795,640 Hacker News comments, November 2025 to November 2026. How we count. Report a mistake.