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

[Steven Hartland]

We do indeed use rrdcached as well as modified version of mrtg
which uses rrdcached, all works fine and performance is good.

    Regards
    Steve

----- Original Message ----- 
From: "Bernard Li" <bernard at vanhpc.org>
To: "Steven Hartland" <killing at multiplay.co.uk>
Cc: <rrd-users at lists.oetiker.ch>
Sent: Saturday, February 19, 2011 9:32 PM
Subject: Re: [rrd-users] rrd + zfs compression = massive space savings


Hi Steve:

Thanks for sharing this!

Have you also tried using rrdcached on top of your ZFS setup?  I
wonder if that would provide any additional benefits.

Cheers,

Bernard

On Sat, Feb 19, 2011 at 10:54 AM, Steven Hartland
<killing at multiplay.co.uk> wrote:
> Just wanted to share our experience with using zfs compression
> on FreeBSD for our rrds.
>
> We're seen a fantastic 21.41x compression ratio on our 46k rrds
> stored on a zfs volume compressed with gzip. This means meaning
> we're saving 93GB of space by doing this :)
>
> The gzip compression is CPU heavy so if you want to use this
> you need a good amount of CPU available but if your short on
> IO throughput which tends to be the case when updating this
> many rrds it also a great way to improve performance.
>
> Regards
> Steve
>
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