Subject: kern/31966: scheduler multiprocessor problem
To: None <kern-bug-people@netbsd.org, gnats-admin@netbsd.org,>
From: None <yamt@mwd.biglobe.ne.jp>
List: netbsd-bugs
Date: 11/01/2005 09:28:00
>Number: 31966
>Category: kern
>Synopsis: scheduler multiprocessor problem
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: kern-bug-people
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Tue Nov 01 09:28:00 +0000 2005
>Originator: YAMAMOTO Takashi <yamt@mwd.biglobe.ne.jp>
>Release: NetBSD 3.99.10
>Organization:
>Environment:
System: NetBSD kaeru 3.99.10 NetBSD 3.99.10 (build.kaeru.xen.nodebug) #21: Tue Nov 1 15:52:04 JST 2005 takashi@kaeru:/home/takashi/work/kernel/build.kaeru.xen.nodebug i386
Architecture: i386
Machine: i386
>Description:
- decay of p_estcpu is a function of loadavg, which is
independent from number of cpus.
- p_estcpu is increased on each cpus by a constant.
assuming enough number of runnable lwps,
the above two get more imbalanced if a system has more cpus.
>How-To-Repeat:
>Fix:
make runqueue and loadavg per-cpu?
>Unformatted: