Hey,,<br><br>"<br>
note that the gain will drop as your rrd files are filling with<br>
actual data ... so make sure you have plenty of free space on that<br>
system !<br>"<br><br><br>So when the rrd"s are full, the gain of space will be like how many % ? Any idea ?<br><br><br>Thanks<br><br><div class="gmail_quote">2011/2/20 Tobias Oetiker <span dir="ltr"><<a href="mailto:tobi@oetiker.ch">tobi@oetiker.ch</a>></span><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">Steve,<br>
<br>
note that the gain will drop as your rrd files are filling with<br>
actual data ... so make sure you have plenty of free space on that<br>
system !<br>
<br>
cheers<br>
tobi<br>
<div><div></div><div class="h5"><br>
Yesterday Bernard Li wrote:<br>
<br>
> Hi Steve:<br>
><br>
> Thanks for sharing this!<br>
><br>
> Have you also tried using rrdcached on top of your ZFS setup? I<br>
> wonder if that would provide any additional benefits.<br>
><br>
> Cheers,<br>
><br>
> Bernard<br>
><br>
> On Sat, Feb 19, 2011 at 10:54 AM, Steven Hartland<br>
> <<a href="mailto:killing@multiplay.co.uk">killing@multiplay.co.uk</a>> wrote:<br>
> > Just wanted to share our experience with using zfs compression<br>
> > on FreeBSD for our rrds.<br>
> ><br>
> > We're seen a fantastic 21.41x compression ratio on our 46k rrds<br>
> > stored on a zfs volume compressed with gzip. This means meaning<br>
> > we're saving 93GB of space by doing this :)<br>
> ><br>
> > The gzip compression is CPU heavy so if you want to use this<br>
> > you need a good amount of CPU available but if your short on<br>
> > IO throughput which tends to be the case when updating this<br>
> > many rrds it also a great way to improve performance.<br>
> ><br>
> > Regards<br>
> > Steve<br>
> ><br>
> > ================================================<br>
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</div></div><font color="#888888">--<br>
Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten, Switzerland<br>
<a href="http://it.oetiker.ch" target="_blank">http://it.oetiker.ch</a> <a href="mailto:tobi@oetiker.ch">tobi@oetiker.ch</a> ++41 62 775 9902 / sb: -9900</font><br>_______________________________________________<br>
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