On 2013-05-22 19:07, Konrad Neuwirth wrote:
Hello everyone,
we are currently facing severe problems with nmbclusters on a NetBSD
6.0 generic system (amd64). We're running short of nmbclusters, and I
do not understand how I can increase them.
sysctl kern.mbuf.nmbclusters
kern.mbuf.nmbclusters = 16384
I see that this number is both derived at boot time (writing another
value into the kernel has no effect), but I also cannot turn that
knob. The only value that doesn't lead to an 'invalid argument' error
is 16384. I have no idea what a better value is, but we've outages of
up to ten minutes that take down all network interfaces on that
system
(and we're at six networking interfaces, one with three vlans -- and
they're mostly well-used).
So: What can I do to get that value up, to make the system more
stable?
Thank you,
Konrad
I am pretty sure you will need to compile this into a new kernel.
I have used:
options NKMEMPAGES=98352
options NMBCLUSTERS=65568
in my kernel config file in the past...pretty sure I remember it not
being configurable at runtime.
The actual number used is of course up to you and the system resources
you have available.
--gene
