[lkml]   [1999]   [Jan]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: Can and should the kernel HZ value be changed?

> > The current HZ value of 100 is definitely archaic, best suitable for a
> > 386SX at 16MHz. The performance potential of increasing HZ with respect to
> > realtime and interactivite responsiveness is so huge, it simply cannot be
> > overlooked.
> could you elaborate why it makes a difference? what part of the kernel do
> you think causes the speedup?

Linux has some problems with scheduling:

If you access disks or do other similar tasks (login), and there's
background process running, you get scheduled at next timer tick - ie.
10ms later. This way, I was able to "feel" background while(1);
processes on my 486/16. I'm currently running some tests (find / in
fact), to see if this canbe measured in addition to 'felt'.


I'm really Pavel
Look at ;-).

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
Please read the FAQ at

 \ /
  Last update: 2005-03-22 13:49    [W:0.085 / U:0.892 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site