TCP packet out-of-order problem
rwatson at FreeBSD.org
Mon Jan 5 13:13:25 UTC 2009
On Fri, 2 Jan 2009, Lin Jui-Nan Eric wrote:
> After running "netstat -s -p tcp", we found that lots of packets are
> discarded due to memory problems. We googled for it, and found that sysctl
> oid "net.inet.tcp.reass.maxsegments" became 0, therefore packets never
> Then we checked our /boot/loader.conf and /etc/sysctl.conf, and found that
> setting kern.ipc.nmbclusters="0" makes net.inet.tcp.reass.maxsegments=0.
> After setting net.inet.tcp.reass.maxsegments="1600" in /boot/loader.conf,
> the network works perfectly now.
Was it set to 0 through a configuration error, or did the system auto-tune
Robert N M Watson
University of Cambridge
> Thank you all for the help!
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