Re: -CURRENT kernel panic

On Thu, 4 Mar 2004, Andrew Gallatin wrote:

> Vincent Poy writes:
>  >
>  > options         VM_KMEM_SIZE_MAX=(768*1048576)
>  > options         VM_KMEM_SIZE_SCALE=2
>  >
>  > to the kernel config file to fix this.  Is this eventually going to be
>  > fixed?  I looked at the coverstation between Terry Lambert and David but

	When I did the above, the kernel panic right after this
immediately so that didn't work either:

Copyright (c) 1992-2004 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
        The Regents of the University of California. All rights reserved.
FreeBSD 5.2-CURRENT #0: Thu Mar  4 06:00:43 PST 2004
    vince_at_bigbang.DNALOGIC.NET:/usr/obj/usr/src/sys/BIGBANG
Preloaded elf kernel "/boot/kernel/kernel" at 0xc0a13000.
Preloaded elf module "/boot/kernel/snd_ich.ko" at 0xc0a131cc.
Preloaded elf module "/boot/kernel/snd_pcm.ko" at 0xc0a13278.
Preloaded acpi_dsdt "/boot/acpi_dsdt.aml" at 0xc0a13324.
Preloaded elf module "/boot/kernel/acpi.ko" at 0xc0a1336c.
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Mobile Intel(R) Pentium(R) 4 - M CPU 2.60GHz (2592.37-MHz 686-class
CPU)
  Origin = "GenuineIntel"  Id = 0xf29  Stepping = 9

Features=0xbfebf9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,P
AT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
real memory  = 2147360768 (2047 MB)
avail memory = 2095669248 (1998 MB)

> Just add vm.kmem_size=VALUE to /boot/loader.conf.  That way you don't
> need to rebuild a kernel.   I run with vm.kmem_size=429391872

	Does that actually work since I thought unless you alter the
kernel, it won't use more than 200KB for the kmem_map?

> Even after bumping the limits, I'm seeing a repeatable panic when
> allocating a large amount of kernel memory ("panic: pmap_enter:
> attempted pmap_enter on 4MB page").  See yesterday's message
> with that subject for details..

	Just checked the archives and yours seems to jhave more variables
than mines from the panic message.


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