4 ms·
Late reply but noted this now. We disagree. Perfect clock obviates the need for protocol based consensus mechanism. Paxos & friends have substantial latency co
by eternalban 11y ago
Late reply but noted this now.
We disagree. Perfect clock obviates the need for protocol based consensus mechanism. Paxos & friends have substantial latency costs. Secondary effects of protocol based approach include NAK storms, reduction of available bandwidth (consumed by the chatty consensus protocol packets). Tertiary effects include triggering of congestion control mechanisms.
There is zero question that a distributed system built on high fidelity clocks will mop the proverbial floor in terms of performance.
- jasonwatkinspdx 11y agoA couple responses: Even with the hardware, google can't shrink the window past 7ms or so, based on published reports. To preserve consistency there are situations where you need to wait out the clock uncertainty. Spanner still uses paxos for replication because ordering is only part of the problem consensus solves.