Re: kern/38792: sched_pstats takes too long

[Jason Thorpe <thorpej%shagadelic.org@localhost>]

The following reply was made to PR kern/38792; it has been noted by GNATS.

From: Jason Thorpe <thorpej%shagadelic.org@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: kern-bug-people%netbsd.org@localhost,
 gnats-admin%netbsd.org@localhost,
 netbsd-bugs%netbsd.org@localhost
Subject: Re: kern/38792: sched_pstats takes too long
Date: Thu, 29 May 2008 16:44:15 -0700

 On May 29, 2008, at 4:40 PM, ad%netbsd.org@localhost wrote:
 
 >> Maybe:
 >
 > - Make sched_pstats use a marker process so it does not hold proc_lock
 >  for so long?
 >
 > - Have two classes of callout, like Solaris. One run from a softint
 >  as we do now, and another run from a kthread, for slow items like
 >  sched_pstats.
 
 
 ...or restructure the scheduler so that you never have to pass over  
 all of the processes periodically?
 
 -- thorpej