[DRBD-user] Use secondary for read I/O too ?
reg at elconas.de
Mon Aug 25 18:39:35 CEST 2008
While reading your answer I realize that I may have not thought about
the consequences well enough :)
However, thanks the for detailed explaination.
Lars Ellenberg schrieb:
> right. short acces times for reads.
> low latency for small, random, reads.
> and you want to add in network latency,
> where you now have only "local disk" latency.
> especially for latency, it is best to stay on "local disk" for reads.
> unless your network latency is neglectable in comparison with your
> local disk latency. which is not the case in my experience.
> with typical GbE latency, it will rather double the "access time".
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