On 2007-07-14T20:52:43, Alan Robertson <[EMAIL PROTECTED]> wrote:
> a random collection of mostly old cast-off computers. They range
> between 300mhz and 2.4 ghz, and have disks ranging from
> 5200 to 7200 RPM with significantly different seek times.
> Some support DMA, and I believe some of them don't, and the
> amount of RAM also varies.
That cluster is possessed, but in a useful way.
I'd be interested in recreating those properties though, or making them
tunables in CTS.
If the most likely theory is that this is because of the timing
differences, that should be possible to simulate. On a virtualized
cluster, it's quite simple to limit CPU and memory assignments
accordingly. Or, within CTS, create an additional system load instead of
just running heartbeat.
I think those should help reduce the reliance on magic smoke ;-)
Regards,
Lars
--
Teamlead Kernel, SuSE Labs, Research and Development
SUSE LINUX Products GmbH, GF: Markus Rex, HRB 16746 (AG Nürnberg)
"Experience is the name everyone gives to their mistakes." -- Oscar Wilde
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