[Haskell-cafe] GDB and ticks

Brandon Allbery allbery.b at gmail.com
Mon Oct 18 14:31:49 UTC 2021

Sadly, it also comes with a price: everything including GCs runs at every
context switch instead of waiting for an appropriate number of ticks to
pass. (That said, I've also been bitten by the interrupt issue.)

On Mon, Oct 18, 2021 at 10:28 AM Donn Cave <donn at avvanta.com> wrote:

> quoth Henning Thielemann <lemming at henning-thielemann.de>
> > On Mon, 18 Oct 2021, Sylvain Henry wrote:
> > > The timer isn't only used for profiling, it is used for scheduling
> too.
> > > You can disable it with `+RTS -V0` (cf
> > >
> https://ghc.gitlab.haskell.org/ghc/doc/users_guide/debug-info.html#tutorial
> )
> >
> > Cool, this works!
> What does it break?  Just about anything I'd run that was written in
> Haskell must run this way, to avoid fatal interrupts in things like
> socket I/O, so it's essentially a default - everything must be built
> with -rtsopts, and run with GHCRTS=-V0 environment.
>         Donn
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brandon s allbery kf8nh
allbery.b at gmail.com
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