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xxs
3y ago
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If you want to minimize latency - you got for busy waiting. It's a common thing for HFT
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yvdriess
3y ago
Not just while(true) busy wait, running the hot path continuously and keeping the 'actually send packet' flag unset. Gotta keep them caches hot.
Or, busy wait in a hardware state using MONITOR / MWAIT
hot_gril
3y ago
My memory is hazy, but I remember busy-waiting being a common theme in that code. There was no sleep. I didn't sleep either.
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