Any reasons to change BSD scheduler: SCHED_4BSD to SCHED_ULE?

[Eric Anderson]

Nuno Teixeira wrote:

>Hello to all,
>
>I'm using 5.2 RC and I'd like to know if are good reasons to change my
>sheduler to the new one on a UP machine.
>  
>
Well, just my $0.02, but last night, while doing some heavy cpu/io 
stuff, I noticed that _ULE is in action - I was running mencoder, xmms, 
ftp'ing a file locally (100mbit), using a handful of xterm's, and my 
usual batch of stuff (netscape/mozilla, gaim, etc) - and I noticed the 
machine (even though it was heavily loaded) was VERY responsive, and I 
hardly even noticed any load on it at all.  Now, under SCHED_4BSD, I 
definitely would have noticed..  I know because I went back to 4BSD for 
a few days when trying to hunt down a bug, and that's when I realized 
there really is a difference..

But, ymmv..

Eric


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Eric Anderson	   Systems Administrator      Centaur Technology
All generalizations are false, including this one.
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