CFS Performance

From: Parkin Frank - fparki (fparki@acxiom.co.uk)
Date: Tue Aug 26 2003 - 09:35:06 EDT


TruCluster v5.1a / v5.1b

We are currently building and testing ES45 clusters utilising EVA storage.
We have noticed that a single "dd" can overwhelm the memory channel
inter-connect when reading/writing to a disk that is not locally served by
CFS e.g. a drop from 70mb/s to 20mb/s.

Has anyone performed any benchmarking and are willing to share?

We are particularly interested in AdvFS performance and whether more memory
will be required to buffer read/writes (when the IC is saturated) to
maintain disk performance.

Many thanks
Frank

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