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Re: Can't change kern.mbuf.nmbclusters on evbarm? (Andy Ruhl) writes:

>sysctl: kern.mbuf.nmbclusters: sysctl() failed with Invalid argument

There is a limit to the number of nmbclusters, on your system
this should be half of the kernel map which for arm32 spans 7MB.

And indeed 1792*2048 == 3.5MB.

You can override the sizing limits with the config option NKMEMPAGES_MAX
but I don't know wether this is really supported by the code. For a test
you might chose a value of 2048 (== 8MB).

                                Michael van Elst
                                "A potential Snark may lurk in every tree."

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