Time, Clocks, and the Ordering of Events in a Distributed System A distributed sys consists m ofacollection ofdistinct processes which are spatially separat.

# Story of the Chandy-Lamport algorithm according to Lamport’s website. # Assumption: a process can record its own state and the msgs. it sends and receives, nothing else! # A …

In 1978 the American computing scientist Leslie Lamport published a paper [2] in which he introduced so-called logical clocks to synchronize processes in a distributed system.

CMSC 714 Lecture 17 Lamport Clocks and Race Conditions Alan Sussman (with thanks to Chris Ackermann) Notes

Lamport Clocks and Causality Lamport clock timestamps do not capture causality Given two timestamps C(a) and C(z), want to know whether there’s a chain of events linking them:

Lamport paper discussion What happens when we need to add a process? How can we separate out concurrent events that just happened to have a certain ordering for their times?

Our technique is based on Lamport’s logical clocks, which were originally used in distributed systems. We make modest extensions to Lamport’s logical clocking scheme to assign …