>>> On 4/11/2008 at 4:24 PM, in message <[EMAIL PROTECTED]>, "Bernard Li" <[EMAIL PROTECTED]> wrote: > Hi Brad: > > I decided to move the thread to ganglia-developers since it was > evolving into a development discussion. > > On Fri, Apr 11, 2008 at 3:18 PM, Brad Nicholes <[EMAIL PROTECTED]> wrote: > >> Yes, I think we need something like that for gmeta. What I was thinking is > to add another filter type. Somthing like ?filter=delta or something like > that, that would just project the delta since the last dump. If both gmond > and gmetad had a way to reduce the XML by just producing deltas, I think that > would speed up the XML parsing a lot and also reduce the writes on the RRDs. > > AFAIK filtering only works with gmetad's interactive port and the only > ganglia component which uses it is the web frontend. So creating this > new filter wouldn't really help with reducing the amount of XML being > tossed between the daemons unless we modify gmetad to be able to talk > to each other via the interactive port? Or am I missing something > here? >
I think what I am suggesting is that we do a couple of different things. First add the new filter type to the interactive port to allow the frontend to be more efficient. Then in addition, we allow the user to configure a different port for deltas only with the option to turn off the current 8651 port. So in other words, we could add some addition configuration to the port directive to specify it as an XML_port (currently supported) or a delta_port (new type). The other option would be to just add a delta_port configuration directive and add the functionality. I am assuming that as gmetad evolves, especially with the python rewrite, that the current XML_port would become obsolete in favor of the delta_port. The next thing to do would be to add the same type of functionality to gmond so that we aren't sending a lot of unnecessary data there as well. Brad ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone _______________________________________________ Ganglia-developers mailing list Ganglia-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ganglia-developers
