[Haskell-cafe] GDB and ticks

Donn Cave donn at avvanta.com
Mon Oct 18 14:27:28 UTC 2021

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.


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