Re: Problems tuning kmem_map on 5.1-REL box.

On Wed, 18 Jun 2003, David Schultz wrote:

> To allow the kmem_map to exceed 200 MB, you'll also need to tweak
> VM_KMEM_SIZE_MAX to (for example) '(1024 * 1024 * 1024)'.  BTW,
> the formula, which I stole from vmparam.h, is:
>
> min(max(VM_KMEM_SIZE, Physical memory/VM_KMEM_SIZE_SCALE), VM_KMEM_SIZE_MAX)

Looks like I may have found some kind of error, adding this to my kernel
config:

# KVM
options         VM_KMEM_SIZE_SCALE="4"
options         VM_KMEM_SIZE_MAX="(1024 * 1024 * 1024)"

(1024MB of KVM, 4096MB/4, 1024MB MAX KVM size)

Cause the following warning and compile bomb:

% config KVM_FIX
WARNING: unknown option `*' removed from ../compile/KVM_FIX/opt_vm.h
Kernel build directory is ../compile/KVM_FIX
Don't forget to do a ``make depend''

-=-
cc -c -O -pipe -mcpu=pentiumpro -Wall -Wredundant-decls -Wnested-externs
-Wstrict-prototypes  -Wmissing-prototypes -Wpointer-arith -Winline
-Wcast-qual  -fformat-extensions -std=c99  -nostdinc -I-  -I. -I../../..
-I../../../dev -I../../../contrib/dev/acpica -I../../../contrib/ipfilter
-D_KERNEL -include opt_global.h -fno-common  -mno-align-long-strings
-mpreferred-stack-boundary=2 -ffreestanding -Werror
../../../kern/kern_malloc.c
../../../kern/kern_malloc.c: In function `kmeminit':
../../../kern/kern_malloc.c:430: syntax error before "vm_kmem_size"
cc1: warnings being treated as errors
../../../kern/kern_malloc.c: At top level:
../../../kern/kern_malloc.c:480: warning: function declaration isn't a
prototype
../../../kern/kern_malloc.c:502: warning: function declaration isn't a
prototype
../../../kern/kern_malloc.c:607: storage class specified for parameter
`sysctl___kern_malloc'
../../../kern/kern_malloc.c:607: parameter `sysctl___kern_malloc' is
initialized
../../../kern/kern_malloc.c:607: storage class specified for parameter
`__set_sysctl_set_sym_sysctl___kern_malloc'
../../../kern/kern_malloc.c:607: parameter
`__set_sysctl_set_sym_sysctl___kern_malloc' is initialized
../../../kern/kern_malloc.c:607: section attribute not allowed for
`__set_sysctl_set_sym_sysctl___kern_malloc'
../../../kern/kern_malloc.c:136: warning: `sysctl_kern_malloc' declared
`static' but never defined
*** Error code 1

Stop in /usr/src/sys/i386/compile/KVM_FIX.
%
-=-

Changing the options to:

# KVM
options         VM_KMEM_SIZE_SCALE="4"
options         VM_KMEM_SIZE_MAX="(1024*1024*1024)"

Configs and compiles cleanly, but panics when rebooting with the new
kernel:

kmem_suballoc: bad status return of 3.
panic: kmem_suballoc
cpuid = 0; lapic.id = 00000000
Uptime: 1s

So is there some sort of syntax error I am running over, or is this a bug?
(in either case)

Best Wishes - Peter
-- 
Peter_Losher_at_isc.org | ISC | OpenPGP 0xE8048D08 | "The bits must flow"