I think there's already a ticket for slow RTS startup, although I didn't find it on a quick search, and that time looks similar to the examples I saw (around a tenth of a second). On Fri, Aug 23, 2024 at 2:50 PM amindfv--- via Haskell-Cafe < haskell-cafe@haskell.org> wrote:
I'm working on a small program that has to run many, many times, as quickly as possible (yes, it needs to be a standalone program).
I've optimized it in many ways, but I seem to have a time floor, observable with "Hello, world"
$ cat Hello.hs main = putStrLn "Hello world" $ ghc -O2 Hello.hs $ time ./Hello Hello world
real 0m0.150s user 0m0.117s sys 0m0.032s
The equivalent program in C takes only 0.002s (75x faster).
What is taking the extra time? Is it the RTS "booting"? Is there any way to speed this up?
Thanks, Tom _______________________________________________ Haskell-Cafe mailing list To (un)subscribe, modify options or view archives go to: http://mail.haskell.org/cgi-bin/mailman/listinfo/haskell-cafe Only members subscribed via the mailman list are allowed to post.
-- brandon s allbery kf8nh allbery.b@gmail.com