[rrd-users] Performance over NFS

Tobias Oetiker tobi at oetiker.ch
Tue Dec 8 11:09:31 CET 2009

Hi Simon,

Today Simon Hobson wrote:

> Tobias Oetiker wrote:
> >try disabeling mmap io
> Am I right in thinking that's a compile time option ? Also, is mmap
> one of the feature that appeared in 1.3 - so version 1.2.15 won't be
> using it. Does mmap on the hosting side (rrdtool updating the file)
> have an effect ?

there was mmap in use in 1.2 as well only less ...

> >also try exporting nfs with the async option ... less of a data
> >integrity guarantee, but it should be faster ...
> As I read the man page, that'll only affect writes. I've exported the
> directory as read-only - and it doesn't appear to have any effect.

ah it is the graphing which is slow not the updating ?



Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten, Switzerland
http://it.oetiker.ch tobi at oetiker.ch ++41 62 775 9902 / sb: -9900

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