good effective_io_concurrency for FusionIO drives?

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От Richard Yen
Тема good effective_io_concurrency for FusionIO drives?
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Msg-id E302F8A8-8762-40F3-9DA2-268210EFE52A@richyen.com
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Список pgsql-performance
Hello,

Wondering what's a good value for effective_io_concurrency when dealing with FusionIO drives...anyone have any
experiencewith this? 

I know that SSDs vary from 10 channels to 30, and that 1 SSD about as fast as a 4-drive RAID, but I can't seem to
settleon a good value to use for effective_io_concurrency.  Has anyone done any performance testing/metrics with the
value? Any recommendations or thoughts? 

--Richard

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