* Brian O'Shea <[EMAIL PROTECTED]> [010807 23:33] wrote:
> Hello,
>
> I am using a PIII 550MHz UP system running FreeBSD 4.1-RELEASE. It has
> a 3c905B-TX Fast Etherlink XL card.
[snip]
> I increased maxusers to 128 (2560 mbuf clusters) and it ran out of mbuf
> clusters again. Then I increased it to 256 (4608 mbuf clusters), with
> the same results. I don't have any sense of what is reasonable mbuf
> cluster usage for the application that I am running, but the system
> never seems to recover from the condition, which would seem to point to
> an mbuf cluster leak.
>
> Does this sound like a problem with the driver (mbuf cluster leak), or
> with the way that I have tuned this system? (the kernel config file for
> this system is attached)
>
> I compiled a debug kernel and panicked the system while it was in the
> state described above, in case that is any use. I don't know how to
> analyze the crash dump to determine where the problem is. Any
> suggestions are welcome.
Your system isn't configured for high network throughput, you
want to put something like:
kern.ipc.nmbclusters=32768
this might also help:
net.inet.tcp.tcbhashsize=32768
put those into /boot/loader.conf
-Alfred
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