Date: Wed, 7 Apr 1999 20:17:22 +0200 From: Arjan de Vet <Arjan.deVet@adv.iae.nl> To: hackers@freebsd.org Subject: Increasing both NBUF and NMBCLUSTERS leads to panics (solved) Message-ID: <199904071817.UAA25325@adv.iae.nl>
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I wrote:
>Besides increasing the NBUF parameter I also want to increase
>NMBCLUSTERS of course because the machine will handle quite some network
>traffic. But for some reason increasing both NBUF and NMBCLUSTERS only
>leads to panics :-(.
Based on some reactions I got I took the following 4.0-current changes and
ported them to 3.1-stable:
dg 1999/03/11 10:28:47 PST
Modified files:
sys/i386/conf Makefile.i386 kernel.script
sys/i386/include pmap.h
Log:
Increased kernel virtual address space to 1GB. NOTE: You MUST have fixed
bootblocks in order to boot the kernel after this! Also note that this
change breaks BSDI BSD/OS compatibility.
Also increased default NKPT to 17 so that FreeBSD can boot on machines
with >=2GB of RAM. Booting on machines with exactly 4GB requires other
patches, not included.
Revision Changes Path
1.141 +2 -2 src/sys/i386/conf/Makefile.i386
1.2 +1 -1 src/sys/i386/conf/kernel.script
1.59 +4 -4 src/sys/i386/include/pmap.h
tegge 1999/02/15 09:36:59 PST
Modified files:
sys/boot/common load_elf.c
Log:
Enable load of i386 ELF kernels with larger KVA range (e.g. starting
at
0xe0100000u or 0xc0100000u instead of the usual 0xf0100000u).
Revision Changes Path
1.11 +2 -2 src/sys/boot/common/load_elf.c
After recompiling the kernel and recompiling/reinstalling the bootblocks
I was able to load a kernel with increased NBUF and NMBCLUSTERS
settings.
I was going to suggest that these changes be merged in 3.1-stable but I
just saw that Peter Wemm merged the load_elf.c change today. I suppose
we'll see a 'HEADS UP' warning on freebsd-stable and in the UPDATING
file somewhere in the future urging everybody to recompile and install
their bootblocks after which the other change can be merged (I thought
the BSD/OS compatibility was fixed somewhere else already).
Thank you all for your suggestions and remarks.
Arjan
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