[rrd-users] Sanity checks on Buffer Cache and I/O at peak aggregation times

[Derek Haynes]

Steve,

> Which OS are you using?  If you're using a 64bit Linux then you'll get better memory handling and use with >4GB of memory.

Linux 64 bit (Ubuntu).

> Also, are you using rrdcached?  This can make a significant benefit on disk IO if you tune it aggressively.

We've started using it on a small sample of files - working well.
Another big advantage I see with RRDCached is the ability to spread
out the updates around peak aggregation times (like the 00:00 UTC).
I'm still not clear on why there is an increase in reads during those
times.

-Derek


On Sun, Sep 18, 2011 at 3:13 PM, Steve Shipway <s.shipway at auckland.ac.nz> wrote:
> Which OS are you using?  If you're using a 64bit Linux then you'll get better memory handling and use with >4GB of memory.
>
> Also, are you using rrdcached?  This can make a significant benefit on disk IO if you tune it aggressively.
>
> Steve
>
>
> Steve Shipway
> ITS Unix Services Design Lead
> University of Auckland, New Zealand
> Floor 1, 58 Symonds Street, Auckland
> Phone: +64 (0)9 3737599 ext 86487
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>
>



-- 
Derek Haynes
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