Actually, when "EBS-Optimized" is on, then the instance gets dedicated bandwidth to EBS.
Rayson ================================================== Open Grid Scheduler - The Official Open Source Grid Engine http://gridscheduler.sourceforge.net/ http://gridscheduler.sourceforge.net/GridEngine/GridEngineCloud.html On Wed, May 25, 2016 at 7:56 PM, Yves Dorfsman <y...@zioup.com> wrote: > Indeed, old-style disk EBS vs new-style SSd EBS. > > Be aware that EBS traffic is considered as part of the total "network" > traffic, and each type of instance has different limits on maximum network > throughput. Those difference are very significant, do tests on the same > volume > between two different type of instances, both with enough cpu and memory > for > the I/O to be the bottleneck, you will be surprised! > > > On 2016-05-25 17:02, Rayson Ho wrote: > > There are many factors that can affect EBS performance. For example, the > type > > of EBS volume, the instance type, whether EBS-optimized is turned on or > not, etc. > > > > Without the details, then there is no apples to apples comparsion... > > > > Rayson > > > > ================================================== > > Open Grid Scheduler - The Official Open Source Grid Engine > > http://gridscheduler.sourceforge.net/ > > http://gridscheduler.sourceforge.net/GridEngine/GridEngineCloud.html > > > > > > > > On Wed, May 25, 2016 at 6:34 PM, Tory M Blue <tmb...@gmail.com > > <mailto:tmb...@gmail.com>> wrote: > >> > >> We are starting some testing in AWS, with EC2, EBS backed setups. > >> > >> What I found interesting today, was a single EBS 1TB volume, gave me > >> something like 108MB/s throughput, however a RAID10 (4 250GB EBS > >> volumes), gave me something like 31MB/s (test after test after test). > >> > >> I'm wondering what you folks are using inside of Amazon (not > >> interested in RDS at the moment). > >> > >> Thanks > >> Tory > >> > >> > >> -- > >> Sent via pgsql-performance mailing list ( > pgsql-performance@postgresql.org > > <mailto:pgsql-performance@postgresql.org>) > >> To make changes to your subscription: > >> http://www.postgresql.org/mailpref/pgsql-performance > > > -- > http://yves.zioup.com > gpg: 4096R/32B0F416 > > > > -- > Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) > To make changes to your subscription: > http://www.postgresql.org/mailpref/pgsql-performance >
