[lkml]   [2001]   [Oct]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: VM: 2.4.10 vs. 2.4.10-ac2 and qsort()
> I'm not sure either, since qsort doesn't really have much
> locality of reference but just walks all over the place.

qsort can be made to perform reasonably well providing you try to cache
colour the objects you sort and try to use prefetches a bit.

> I wonder how eg. merge sort would perform ...

Generally better but thats seperate to the VM issues.

> One thing which could make 2.4.10 faster for this single case
> is the fact that it doesn't keep any page aging info, so IO
> clustering won't be confused by the process accessing its
> pages ;)

I don't think that is too unusual a case. If the smarter vm is making poorer
I/O clustering decisions it wants investigating
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-03-22 13:03    [W:0.039 / U:1.328 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site