On Sun, 26 Jan 1997 14:08:44 +0100 (MET) 
 hannken@serv1.eis.cs.tu-bs.de (Juergen Hannken-Illjes) wrote:

 > Maybe the change of thorpej to sys/arch/sparc/sparc/machdep.c (Dec 22, 1996):
 > 
 >   +       /*
 >   +        * XXX stopgap measure to prevent wasting too much KVM on
 >   +        * the sparsely filled buffer cache. 
 >   +        */
 >   +       if (nbuf > 128)
 >   +               nbuf = 128;
 > 
 > If I understand the buffer management, the difference is as follows:

...Ok... I follow what you're saying...

 > My -current kernel (sun4c, Sparc2, Weitek) runs fine since I removed this
 > 'nbuf = 128' line.

...unfortunately, some systems (e.g. SS1s) crap out from the large
amount of KVA space required by the buffers.  *sigh*

I agree with you that my change should be backed out, and I guess
the SPARC port should probably back MAXBSIZE down to 32768 until
all this gets resolved.

Jason R. Thorpe                                       thorpej@nas.nasa.gov
NASA Ames Research Center                               Home: 408.866.1912
NAS: M/S 258-6                                          Work: 415.604.0935
Moffett Field, CA 94035                                Pager: 415.428.6939