Subject: How do I change the size of msgbuf? (dmesg buffer)
To: None <>
From: None <>
List: tech-kern
Date: 12/10/2007 10:51:36
Hello NetBSD kernel gurus,

I am in the midst of porting a driver from FreeBSD to NetBSD.  It would
be real helpful if I could increase the size of the DMESG buffer (msgbuf).
I'm building/testing under the AMD64 platform.  I found 'msgbuf_p_cnt' in
/usr/src/sys/arch/amd64/amd64/machdep.c which appears to be what controls
the size of msgbuf, but it's initialized to 0 and I don't see it ever set
or referenced anyplace else in the kernel!  Obviously, I'm missing something.

I even tried adding the line 'kern.msgbufsize=131000' to /etc/sysctl.conf
and rebooting, but the size always shows up at 16352.  What am I not seeing??


Patrick Klos
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    Patrick Klos                           Email:
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