Collecting SBUs now

Adam Trilling agt10 at
Thu May 30 12:00:10 PDT 2002

On Thu, 30 May 2002, Ian Molton wrote:

> Thats not quite true.
> I find -j4 is moticably quicker on my UNI-processor box.
> doing a 1-process make leaves the box doing only about 50-75% work -
> lots of gaps with little load.

i agree.  i did some kernel hacking on a dual-processor box for a class
last semester and make -j 4 took about 15 seconds less than make -j 2 to
compile the kernel (about 105 seconds vs about 90 seconds).  i think with
more processes than processors, the processors will still have work to do
while they're waiting on disk accesses, hence the speedup.

Adam Trilling
agt10 at

char m[9999],*n[99],*r=m,*p=m+5000,**s=n,d,c;main(){for(read(0,r,4000);c=*r;

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