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firecracker-microvm / firecracker

Secure and fast microVMs for serverless computing.
http://firecracker-microvm.io
Apache License 2.0
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Research performance impact of different VM topologies #1599

Open andreeaflorescu opened 4 years ago

andreeaflorescu commented 4 years ago

Our setup of cache topology (at least on x86_64) is kinda dummy.

At the end of the Automated Performance TestingFor Virtualization with MMTests there are some slides with performance benchmarks where they show the difference between host, VM with no topology, VM with topology and VM with a tuned topology.

We should measure this in Firecracker as well and see if we should also tweak our cache topology.

sandreim commented 3 years ago

The benchmarks are pretty useful here just to get some head start into what to expect. We can try similar benchmarks in high density environments (1000+ uVMs) where the main focus should be CPU oversubscription.

zulinx86 commented 5 months ago

FYI: stress-ng has cpu-cache class, which might be available to measure the performance impact. https://manpages.ubuntu.com/manpages/xenial/man1/stress-ng.1.html