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.)
quoth Henning Thielemann <lemming@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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