>> 
> 
> Hi Nico,
> 
> No one has mentioned the elephant in the room, but a database can
> be very I/O intensive and you may not be getting the performance
> you need from your virtual disk running on your VMware disk subsystem.
> What do IOmeter or other disk performance evaluation software report?
> 
> Regards,
> Ken

Anecdatum: 

Moving from a contended VMware hard-disk based filesystem running over the 
network, to a bare metal RAID10 SSD, resulted in many DB operations running 
20-30x faster.

Table sizes circa 10-20G, millions of rows. 

Graeme.

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