On Wed, Jan 06, 2021 at 12:06:27PM -0600, Don Seiler wrote: > On Wed, Jan 6, 2021 at 10:51 AM Joshua Drake <jd@xxxxxxxxxxxxxxxxx> wrote: > > Looking at the Azure portal metric, we are nowhere close to the advertised > maximum IOPS or MB/s throughput (under half of the maximum IOPS and under a > quarter of the MB/s maximum). So there must be some other bottleneck in > play. The IOPS limit on this VM size is even higher so that shouldn't be it. > Hi Don, I may just be re-stating common knowledge, but the available IOPS would be constrained by how tightly coupled the storage is to the CPU. Even a small increase can limit the maximum IOPS unless you can issue multiple relatively independent queries at one. I know no details of how Azure implements their storage tiers. Regards, Ken
