On 08/31/2015 01:16 PM, Josh Berkus wrote:
> All, Bruce:
>
> I'm also going to pontificate that, for a future solution, we should not
> focus on write *IO*, but rather on CPU and RAM. The reason for this
> thinking is that, with the latest improvements in hardware and 9.5
> improvements, it's increasingly rare for machines to be bottlenecked on
> writes to the transaction log (or the heap). This has some implications
> for system design. For example, solutions which require all connections
> to go through a single master node do not scale sufficiently to be worth
> bothering with.
We see this already, under very high concurrency (lots of connections,
many cores) we often see a significant drop in performance that is not
related to IO in any meaningful way.
JD
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