[rrd-users] Performance over NFS

[Tobias Oetiker]

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 ?

cheers
tobi

>
>

-- 
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