[rrd-users] Re: Announce RRDtool Performance Tester

[Richard Burton]

Hi Tobi/Johannes

I think a standard would be a good thing so that we can compare. However
when posting stats it would be usefull to know the types of disk and
raid configuration as I think these are as important as raw CPU power.

Tobi I assume the number of RRA's in the RRD is important as well, I'm
not sure though what the majority of people are using, I for example are
using

		"RRA:AVERAGE:0.5:1:129600",
		"RRA:AVERAGE:0.5:10:38880",	
		"RRA:AVERAGE:0.5:30:52560",		
		"RRA:MAX:0.5:1:129600",
		"RRA:MAX:0.5:10:38880",	
		"RRA:MAX:0.5:30:52560",	

but I expect this is not the norm.  

Getting that close to what the majority of people are using would make
the test more relevant to the real world but I'm not sure if making such
an assumption will be possible.

Kind Regards
 
Richard Burton
 
--
Richard Burton at Atomwide Ltd Tel 0870 236 5000 Fax 0870 236 5001
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Mailto:richard at atomwide.com               http://www.atomwide.com/


> -----Original Message-----
> From: Tobias Oetiker [mailto:tobi at oetiker.ch] 
> Sent: 30 November 2006 19:31
> To: Johannes Huettemeister
> Cc: Richard Burton; rrd-users at list.ee.ethz.ch; 
> rrd-developers at list.ee.ethz.ch
> Subject: Re: [rrd-users] Re: Announce RRDtool Performance Tester
> 
> Hi Johannes,
> 
> Your system does not seem to experiance that 'performance death'
> others see ... figures with that much ram ... you may want to try
> the new version of the script I am attaching ... it tries harder to
> figure where the limits lie ...
> 
> as comparisons go I guess we need to define some 'benchmark'
> 
> what about the following: How many rrdfiles can your maintain when
> you run at a 1s interval ... how many at a 10s interval and how
> many at a 60s interval ...
> 
> in your list below my guess is that your system would be able to
> keep 2000 rrds up todate ina 1s interval ...
> 
> cheers
> tobi
> 
> 
> 
> 
> > Hi Tobi,
> >
> > Sun V440 (4cpus, 16GB RAM, Solaris 10)
> >
> >
> > Create     10 rrds      1 c/s (0.00291 sdv)   Update     10 
> rrds    4458 u/s
> > (0.00002 sdv)
> > Create     10 rrds      1 c/s (0.00274 sdv)   Update     20 
> rrds    4363 u/s
> > (0.00003 sdv)
> > Create     20 rrds      1 c/s (0.00538 sdv)   Update     40 
> rrds    4218 u/s
> > (0.00005 sdv)
> > Create     40 rrds      1 c/s (0.01087 sdv)   Update     80 
> rrds    4073 u/s
> > (0.00009 sdv)
> > Create     80 rrds      1 c/s (0.02177 sdv)   Update    160 
> rrds    3967 u/s
> > (0.00013 sdv)
> > Create    160 rrds      1 c/s (0.11104 sdv)   Update    320 
> rrds    3800 u/s
> > (0.00019 sdv)
> > Create    320 rrds      5 c/s (0.08539 sdv)   Update    640 
> rrds    3508 u/s
> > (0.00026 sdv)
> > Create    640 rrds      1 c/s (0.24887 sdv)   Update   1280 
> rrds    3008 u/s
> > (0.00039 sdv)
> > Create   1280 rrds      2 c/s (0.29471 sdv)   Update   2560 
> rrds    2000 u/s
> > (0.00118 sdv)
> > Create   2560 rrds      1 c/s (0.29512 sdv)   Update   5120 
> rrds     816 u/s
> > (0.00225 sdv)
> > Create   1536 rrds      2 c/s (0.30246 sdv)   Update   6656 
> rrds    2140 u/s
> > (0.00072 sdv)
> >
> > Can someone give an interpretation? I don't know what to 
> think of my system
> > now:-)
> >
> > cheers Johannes.

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