On Wed, May 16, 2012 at 12:45 PM, David Boreham <david_list@xxxxxxxxxxx> wrote: > On 5/16/2012 11:01 AM, Merlin Moncure wrote: >> >> Although your assertion 100% supported by intel's marketing numbers, >> there are some contradicting numbers out there that show the drives >> offering pretty similar performance. For example, look here: >> http://www.anandtech.com/show/4902/intel-ssd-710-200gb-review/4 and >> you can see that 4k aligned writes are giving quite similar results >> (14k iops) even though the 710 is only rated for 2700 iops while the >> 320 is rated for 21000 IOPS. Other benchmarks also show similar >> results. > > Actually I said the same thing you're saying : that the two series will > deliver similar performance. > > The spec numbers however would be for worst case conditions (in the case of > the 710). > I'm not convinced that those tests were exercising the worst case part of > the envelope. Yeah -- you might be right -- their numbers are based on iometer which looks like it runs lower than other tests (see here: http://www.storagereview.com/intel_ssd_710_series_review_200gb). I still find it interesting the 320 is spec'd so much higher though. I guess I spoke to soon -- it looks it has to do with the life extending attributes of the drive. Benchmarks are all over the place though. merlin -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
