Today Tntteam wrote: > Hey,, > > " > note that the gain will drop as your rrd files are filling with > actual data ... so make sure you have plenty of free space on that > system ! > " > > > So when the rrd"s are full, the gain of space will be like how many % ? Any > idea ?
I don't know for sure but since there is no padding in the rrd format I would guess that the compressibility is pretty low unless you have data with long stretches of repetitive values ... try gziping a full rrd file and you will see ... cheers tobi > > > Thanks > > 2011/2/20 Tobias Oetiker <t...@oetiker.ch> > > > Steve, > > > > note that the gain will drop as your rrd files are filling with > > actual data ... so make sure you have plenty of free space on that > > system ! > > > > cheers > > tobi > > > > Yesterday Bernard Li wrote: > > > > > 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 > > > <kill...@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 > > > > > > > > ================================================ > > > > This e.mail is private and confidential between Multiplay (UK) Ltd. and > > the person or entity to whom it is addressed. In the event of misdirection, > > the recipient is prohibited from using, copying, printing or otherwise > > disseminating it or any information contained in it. > > > > > > > > In the event of misdirection, illegible or incomplete transmission > > please telephone +44 845 868 1337 > > > > or return the E.mail to postmas...@multiplay.co.uk. > > > > > > > > _______________________________________________ > > > > rrd-users mailing list > > > > rrd-users@lists.oetiker.ch > > > > https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users > > > > > > > > > > _______________________________________________ > > > rrd-users mailing list > > > rrd-users@lists.oetiker.ch > > > https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users > > > > > > > > > > -- > > Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten, Switzerland > > http://it.oetiker.ch t...@oetiker.ch ++41 62 775 9902 / sb: -9900 > > _______________________________________________ > > rrd-users mailing list > > rrd-users@lists.oetiker.ch > > https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users > > > > > -- Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten, Switzerland http://it.oetiker.ch t...@oetiker.ch ++41 62 775 9902 / sb: -9900 _______________________________________________ rrd-users mailing list rrd-users@lists.oetiker.ch https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
