Note also - these disks are close to the performance of memory from a few generations ago (e.g. >10GB/second bulk transfers) They also have bigger/faster versions of the drives, 1.2TB each. I suspect that 5 of those would feel somewhat similar to having 6TB of memory in your db server ... :-) [better in fact, since writes are fast too] Graeme. On 04 Jun 2015, at 13:29, Dorian Hoxha <dorian.hoxha@xxxxxxxxx> wrote: > This looks great when you want in-memory (something like unlogged tables) and you also want replication. (meaning, I don't know of an alternative to get replication with unlogged than to just get faster drives + logged tables?) > > On Thu, Jun 4, 2015 at 1:23 PM, Graeme B. Bell <grb@xxxxxxxxxxxxxxxxx> wrote: > > Images/data here > > http://www.pcper.com/reviews/Storage/Five-Intel-SSD-750s-Tested-Two-Million-IOPS-and-10-GBsec-Achievement-Unlocked > > > > On 04 Jun 2015, at 13:07, Graeme Bell <grb@xxxxxxxxxxxxxxxxx> wrote: > > > I previously mentioned on the list that nvme drives are going to be a very big thing this year for DB performance. > > > > This video shows what happens if you get an 'enthusiast'-class motherboard and 5 of the 400GB intel 750 drives. > > https://www.youtube.com/watch?v=-hE8Vg1qPSw > > > > Total transfer speed: 10.3 GB/second. > > Total IOPS: 2 million (!) > > > > + nice power loss protection (Intel) > > + lower latency too - about 20ms vs 100ms for SATA3 (http://www.anandtech.com/show/7843/testing-sata-express-with-asus/4) > > + substantially lower CPU use per I/O (http://www.anandtech.com/show/8104/intel-ssd-dc-p3700-review-the-pcie-ssd-transition-begins-with-nvme/5) > > > > You're probably wondering 'how much' though? > > $400 per drive! Peanuts. > > > > Assuming for the moment you're working in RAID0 or with tablespaces, and just want raw speed: > > $2400 total for 2 TB of storage, including a good quality motherboard, with 2 million battery backed IOPS and 10GB/second bulk transfers. > > > > These drives are going to utterly wreck the profit margins on high-end DB hardware. > > > > Graeme Bell > > > > p.s. No, I don't have shares in Intel, but maybe I should... > > > > > > > > -- > Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) > To make changes to your subscription: > http://www.postgresql.org/mailpref/pgsql-performance > -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
