cost (cycles + cache) of setup and use of IPC mechanisms
Zenaan Harkness
zen at freedbms.net
Sat Sep 15 06:08:53 CEST 2018
Establishing any IPC communication channel has setup costs and per
message or per "message batch" usage costs:
(CPU cycles + context switches) / channel setup
(CPU cycles + context switches) / msg[-batch]
Further, as recent Linux kernel network stack work has discovered,
cache effects strongly proscribe batch processing rather than per-msg
(or per packet) processing (seems obvious, I guess "in hindsight") to
make 10G and above network links work well:
Batch processing of network packets
https://lwn.net/Articles/763056/
and see also:
User-space networking with Snabb
https://lwn.net/Articles/713918/
Is there a paper quantifying and comparing various IPC mechanism
costs?
Specifically and separately, is there a paper quantifying the setup
and use costs of shared memory IPC (possibly in comparison with
any other IPC mechanism)?
TIA,
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