Seastar: C++ framework for high-performance servers

Re:Seastar: C++ framework for high-performance servers by seastarer on Sunday April 26, 2015 @09:58AM (#9441758)

Do you have a link to this cluster-on-die mode?

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Re:Seastar: C++ framework for high-performance servers by virtuallynathan on Sunday April 26, 2015 @10:06AM (#9441785)

This document from Intel covers CoD mode (Pg. 28) and optimal DIMM sizes (Pg. 37), etc. https://drive.google.com/file/d/0B21tKtZ3UOQNdWtJZW9XekFCZ3M...

You should also disable C-States (e.g. lock to C0) - https://rhsummit.files.wordpress.com/2013/06/shak-jeder-summ... covers the performance impact of CPU states.

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Re:Seastar: C++ framework for high-performance servers by seastarer on Sunday April 26, 2015 @10:11AM (#9441806)

Thanks. We "disable" C-states by polling -- the cpu never goes idle. This is partly because dpdk doesn't support interrupts, and partly because using interrupts is a major performance hit. We have plans to improve this, but nothing committed yet.

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