Hey Chuck,
It is painful, too painful. The entire value proposition of RDMA is
low-latency and waiting for the extra HW round-trip for a local
invalidation to complete is unacceptable, moreover it adds a huge loads
of extra interrupts and cache-line pollutions.
The killer is the extra context switches, I’ve found.
That too...
I’ve noticed only a marginal loss of performance on modern
hardware.
Would you mind sharing your observations?
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