mpd success stories, anyone?

[Alexander Motin]

Alex Povolotsky wrote:
> Thanks, it seems to be more or less stable; however, throughput is quite 
> little, lots of packets lost and "No buffer space available" on attempt 
> to ping VPN addresses (only VPN is affected).

Have you tried to disable PPTP windowing in mpd config? ENOBUFS is the 
errno used by ng_pptp node's windowing code when outgoing window is 
full. It is not related to any system tunables. Maximum window size in 
current ng_pptp is 16 packets. It can be small for LFNs and can reduce 
speed.

> I guess I should tune some kernel tunable, but what specific one?

I can recomend you to set
net.graph.maxdgram=524288 

net.graph.recvspace=524288 

to make 'ngctl list' command work, but it is not critical.

-- 
Alexander Motin mav at alkar.net
Optima Telecom