Re: kern/39242: NetBSD 4.0 will start busy-loop an hang on machines with more than 4 GB memory

[Wolfgang Stukenbrock <Wolfgang.Stukenbrock%nagler-company.com@localhost>]

The following reply was made to PR kern/39242; it has been noted by GNATS.

From: Wolfgang Stukenbrock <Wolfgang.Stukenbrock%nagler-company.com@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: kern/39242: NetBSD 4.0 will start busy-loop an hang on machines 
with more than 4 GB memory
Date: Tue, 29 Jul 2008 09:14:27 +0200

 Hi again,
 
 sorry I've failed to insert the requested output ov vmstat ...
 
 here it is:
 
 
 s040# vmstat -s | grep colors
 
         96 page colors
 
 s040#
 
 Simon Burge wrote:
 
 > The following reply was made to PR kern/39242; it has been noted by GNATS.
 > 
 > From: Simon Burge <simonb%NetBSD.org@localhost>
 > To: Wolfgang.Stukenbrock%nagler-company.com@localhost, 
 > 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/39242: NetBSD 4.0 will start busy-loop an hang on machines 
 > with more than 4 GB memory 
 > Date: Tue, 29 Jul 2008 14:19:17 +1000
 > 
 >  Wolfgang.Stukenbrock%nagler-company.com@localhost wrote:
 >  
 >  > >Synopsis:       NetBSD 4.0 will start busy-loop an hang on machines with 
 > more than 4 GB memory
 >  
 >  What does "vmstat -s | grep colors" show on this machine?  If it's a
 >  reasonably recent Intel CPU with 6MB or 12MB of L2 cache, this will
 >  probably not be a power of two and would explain what you're seeing.
 >  
 >  In -current this was fixed by both fixing the cache detection stuff
 >  and rev 1.32 of sys/arch/x86/x86/cpu.c.
 >  
 >  Cheers,
 >  Simon.
 >  
 >