Emulator stopping during mnesia writes

[Sean Hinde]

> Growing a table from scratch at full transaction rate used to 
> run at max 400 per second with pauses in the emulator of up 
> to 7 seconds. With Veritas File system it now runs at 2000 
> per second while another node is doing 100 remote reads per 
> second, and the longest read delay was 150mS.

I knew it was too good to be true. That was for a ram_copies typo, er table.

The real result was 1000 per second, with the longest read delay less than a
second. Still a massive improvement. It almost meets the "soft real time"
spec..

Sean