Re: tb_flush() calls causing long Windows XP boot times

[Richard Henderson]

On 6/15/21 6:58 AM, Programmingkid wrote:
> > Ahh I misread - so those are the addresses of the routines and not where
> > it's sticking the breakpoint?
> >
> > I notice from a bit of googling that there is a boot debugger. I wonder
> > if /nodebug in boot.ini stops this behaviour?
> >
> >   
> > https://docs.microsoft.com/en-us/troubleshoot/windows-server/performance/switch-options-for-boot-files
> >
> > --
> > Alex Bennée
>
> Hi Alex,
>
> I tried your suggestion of using /nodebug. It did not stop the tb_flush() 
> function from being called.

We are not expecting zero calls to tb_flush (it is used for other things, including buffer 
full), but we are hoping that it reduces the frequency of the calls.

I'm guessing you didn't immediately see the slowdown vanish, and so there was no change to 
the frequency of the calls.

FWIW, if you switch to the qemu console, you can see how many flushes have occurred with 
"info jit".


r~