On Thu, 2007-01-11 at 17:31 -0800, Matthias Blankenhaus wrote: > Hello ! > > I have read through the Paper "The ganglia distributed monitoring > system..." (Massie, Chun, Culler) from 2004 and found lots of > extremely valuable information. > > I am concerned about the virtual memory utilization by gmond / > gmetad based on data provided by the paper. However, the paper also > hints at Ganglia design flaws, e.g. using more threads than necessary, > and proposes alternatives like I/O multiplexing or reducing the > thread stack size. > > My questions: > > (01) Is the data provided by this excellent paper still > up to date or are the number different (better) ?
the ganglia monitoring daemon (gmond) has been improved since that paper was written. gmond now uses i/o multiplexing (no threads!) and lighter data structures for storing data. you can easily run "top" to see just how light it really is in your deployment... > (02) Have the design issues been resolved in the meantime ? yes. however, gmetad still uses threads and it a bit of a beast but that's ok. it's not meant to be light-weight or installed on every machine (just the machine serving web pages). -- matt massie phone: 415.692.0828 x2843 fax: 415.278.0441 http://archrock.com/
