Re: #define HZ 1024 -- negative effects?

Rik van Riel (riel@conectiva.com.br)
Thu, 26 Apr 2001 15:31:20 -0300 (BRST)


On Thu, 26 Apr 2001, Adam J. Richter wrote:

> I have not tried it, but I would think that setting HZ to 1024
> should make a big improvement in responsiveness.
>
> Currently, the time slice allocated to a standard Linux
> process is 5*HZ, or 50ms when HZ is 100. That means that you
> will notice keystrokes being echoed slowly in X when you have
> just one or two running processes,

Rubbish. Whenever a higher-priority thread than the current
thread becomes runnable the current thread will get preempted,
regardless of whether its timeslices is over or not.

And please, DO try things before proposing a radical change
to the kernel ;)

regards,

Rik

--
Linux MM bugzilla: http://linux-mm.org/bugzilla.shtml

Virtual memory is like a game you can't win; However, without VM there's truly nothing to lose...

http://www.surriel.com/ http://www.conectiva.com/ http://distro.conectiva.com/

- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/