[lkml]   [2007]   [May]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [patch] CFS scheduler, -v8
On Thu, May 03, 2007 at 10:50:15AM +0200, Ingo Molnar wrote:
> - EEVDF concentrates on real-time (SCHED_RR-alike) workloads where they
> know the length of work units

This is what I was thinking when I wrote earlier that EEVDF expects each
task will specify "length of each new request"

The other observation that I have of EEVDF is that it tries to be fair
in the virtual time scale (each client will get 'wi' real units in 1
virtual unit), whereas sometimes fairness in real-time scale also matters?
For ex: a multi-media app would call scheduler fair to it, it it recvs
atleast 1 ms cpu time every 10 *real* milleseconds (frame-time). A rogue
user (or workload) that does a fork bomb may skew this fairness for that
multi-media app in real-time scale under EEVDF?

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: 2007-05-03 16:25    [W:0.237 / U:0.636 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site