[rrd-users] Re: Announce RRDtool Performance Tester

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

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


> -----Original Message-----
> From: Tobias Oetiker [mailto:tobi@oetiker.ch]
> Sent: 30 November 2006 19:31
> To: Johannes Huettemeister
> Cc: Richard Burton; rrd-users@list.ee.ethz.ch;
> rrd-developers@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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