On Fri, 20 Dec 1996 16:43:44 -0500 (EST) 
 Clarence Wilkerson <wilker@hopf.math.purdue.edu> wrote:

 > My recent current kernel, ( supped sources this AM ) panics
 > on boot, with the message after boot of
 > 
 > real mem  = 4......
 > panic: me_alloc : all pmegs gone
 > halted

Can you try this patch, please?

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

 ----- snip -----

Index: machdep.c
===================================================================
RCS file: /mastersrc/netbsd/src/sys/arch/sparc/sparc/machdep.c,v
retrieving revision 1.5
diff -c -r1.5 machdep.c
*** machdep.c	1996/11/12 06:24:38	1.5
--- machdep.c	1996/12/20 22:42:00
***************
*** 337,342 ****
--- 337,350 ----
  		if (nbuf < 16)
  			nbuf = 16;
  	}
+ 
+ 	/*
+ 	 * XXX stopgap measure to prevent wasting too much KVM on
+ 	 * the sparsely filled buffer cache.
+ 	 */
+ 	if (nbuf > 128)
+ 		nbuf = 128;
+ 
  	if (nswbuf == 0) {
  		nswbuf = (nbuf / 2) &~ 1;	/* force even */
  		if (nswbuf > 256)