4 ms·
The shape of the first chart is really interesting to me. The M1 has a positive linear slope from 1 to 4 clients. Then from 4 to 8 clients the slope is essentia
by nknealk 6y ago
The shape of the first chart is really interesting to me. The M1 has a positive linear slope from 1 to 4 clients. Then from 4 to 8 clients the slope is essentially zero, maybe slightly positive. And then beyond 8 the slope goes negative.
This seems to imply the four efficiency cores really are “efficiency” cores and don’t have much computing horsepower at all.
- phonon 6y agoOr there is a bug, and it's not even running on those cores in the benchmark. In SPECint2017, performance goes from 21.60 to 28.85 when going from 4->8 threads. https://www.anandtech.com/show/16252/mac-mini-apple-m1-tested/5 https://www.anandtech.com/show/16252/mac-mini-apple-m1-teste... (https://images.anandtech.com/graphs/graph16252/119365.png https://images.anandtech.com/graphs/graph16252/119365.png)
- plaur782 6y agoThere is a bit more background on the approach and toolchain here: https://info.crunchydata.com/blog/postgresql-benchmarks-apple-intel-macbook-pro-2011-2019 https://info.crunchydata.com/blog/postgresql-benchmarks-appl... https://github.com/gregs1104/pgbench-tools https://github.com/gregs1104/pgbench-tools