[rrd-users] rrd + zfs compression = massive space savings

[Steven Hartland]

----- Original Message ----- 
From: "Tobias Oetiker" <tobi at oetiker.ch>
To: "Steven Hartland" <killing at multiplay.co.uk>
Cc: "Bernard Li" <bernard at vanhpc.org>; <rrd-users at lists.oetiker.ch>
Sent: Monday, February 21, 2011 5:26 AM
Subject: Re: [rrd-users] rrd + zfs compression = massive space savings


> Yesterday Steven Hartland wrote:
> 
>> Quite possible but as a large portion of the rrds are over 2 years
>> old, think the saving is still pretty good :)
> 
> Indeed ... what is their structure ? For how long do they store
> data ?

Storing a mixture of cpu, memory, # servers, # players and general
mrtg network stats.

Typical server creation is:-

RRDs::create( $dbfile,
    '--start', ( $time - 10 ),
    '--step', 60, # 1 Min step
    "DS:players:GAUGE:300:0:1000", # 1000 Max players
    "DS:maxplayers:GAUGE:300:0:1000", # 1000 Max players
    "DS:mem:GAUGE:300:0:10000", # Up to 10GB RAM
    "DS:cpu:GAUGE:300:0:200", # 
    "RRA:AVERAGE:0.5:1:11520", # 8 days @ 1 min
    "RRA:AVERAGE:0.5:10:4608", # 32 days @ 10 mins
    "RRA:AVERAGE:0.5:360:1464", # 366 days @ 6 hours
    "RRA:MIN:0.5:1:11520", # 8 days @ 1 min
    "RRA:MIN:0.5:10:4608", # 32 days @ 10 mins
    "RRA:MIN:0.5:360:1464", # 366 days @ 6 hours
    "RRA:MAX:0.5:1:11520", # 8 days @ 1 min
    "RRA:LAST:0.5:10:4608", # 32 days @ 10 mins
    "RRA:LAST:0.5:360:1464", # 366 days @ 6 hours
    "RRA:LAST:0.5:1:11520", # 8 days @ 1 min
    "RRA:LAST:0.5:10:4608", # 32 days @ 10 mins
    "RRA:LAST:0.5:360:1464", # 366 days @ 6 hours
);


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