I was having identical issues. I used your patch with the exception that I bumped up buffer size first to 10M from 1M you had. There was a massive improvement but still was seeing some drops so I just decided to bump it up to 30M and it's even better although I still see occasional drops.
To really see the effect you need to in addition to rcvbuffer track udp_inerrors. Vladimir On Mon, 23 Apr 2012, Ramon Bastiaans wrote: > Ah ok. Before you sent your email I had already created a small patch for > myself. It almost seems that APR ignores the OS settings (i.e.: > net.core.rmem_default) and creates a socket with it's own default (receive) > buffer size. > > Attached is a patch against 3.3.6 for lib/apr_net.c that stops the receive > buffers errors for me. > > The patch sets the buffer size a bit bigger, although I'm not sure what would > be a sensible size for gmond. I would think if you have a large cluster with > lots of UDP traffic you would need a bigger receive buffer than for smaller > systems. > > I will try out 3.3.7 and see what it's debug output says on buffer size's. ------------------------------------------------------------------------------ For Developers, A Lot Can Happen In A Second. Boundary is the first to Know...and Tell You. Monitor Your Applications in Ultra-Fine Resolution. Try it FREE! http://p.sf.net/sfu/Boundary-d2dvs2 _______________________________________________ Ganglia-developers mailing list Ganglia-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ganglia-developers
