>>> On 1/25/2008 at 7:21 PM, in message <[EMAIL PROTECTED]>, "Jesse Becker" <[EMAIL PROTECTED]> wrote: > On Jan 25, 2008 9:06 PM, Bernard Li <[EMAIL PROTECTED]> wrote: >> Hi Jesse: >> >> On 1/25/08, Jesse Becker <[EMAIL PROTECTED]> wrote: >> >> > Interesting. >> > >> > How about introducing a new metric: cpu_speed_current. For systems >> > without cpuscaling, it is forced to the same value of cpu_speed, or >> > not sent at all, since it is completely redundant. Otherwise, it >> > reports the current CPU speed, as determined by /proc or /sys. >> >> I believe the CPU speed is collected once at startup -- what if the >> CPU speed was clocked down (or up) after gmond started and this >> "current" speed was collected -- then it no longer is current. > > That's my point. The current behavior is collect the speed once, and > if it potentially variable, report the maximum speed. That's fine > behavior. > >> The other option is to collect this metric periodically, but probably >> only do this if scaling is enabled. > > Yep, that works too. It certainly doens't need to be collected/sent > frequently. I'd think that once a minute is probably ample. > >> But do people really need this feature? :) > > Actually, I can think of a good use for it: proving reduced power > consumption. If you can point to a chart that shows you are actively > throttling CPUs, that's a bonus for the people with clipboards and > checkbooks. :-) > > This is all pretty minor stuff though.
Sounds like a fairly simply python module to write. Just check for the scaling_max_freq file existence and then read it and report it. If it doesn't exist then either just return 0 or default to cpuinfo. Any takers? Brad ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Ganglia-general mailing list Ganglia-general@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ganglia-general
