Re: MPS: commit limit

[Helmut Eller]

On Tue, Jul 16 2024, Eli Zaretskii wrote:

>> This patch adds a igc--set-commit-limit function.  It doesn't fix the
>> problem with the assertion.  People who use the hot MPS build will
>> probably see a normal memory full error and probably have to quit soon
>> after that.  The others see the failed assertion and abort immediately.
>> So the end result will not be much different.
>
> Is this a debugging aid?

Yes, that too.

> If so, please say that in the doc string.

It's an internal function.  Only people who know what they're doing
should use it.

> If that's not the reason, then why would we need to limit the amount
> of memory MPS can commit?  I think we generally let Emacs use as much
> memory as the system is prepared to give it, no?

It also helps to avoid thrashing on machines that don't have many GB of
unused RAM.