Guru: Single Threading A Program Execution

June 15, 2026 Chris Ringer

A paceline in cycling is a formation where all the cyclists ride in a single file line and the lead bike is pulling the group along as everyone else is drafting behind. Eventually the lead bike will drift to the side and to the back of the line, and the next bike will take the lead for the group.

If a spirited cyclist leaves the paceline and goes alone, all the aerodynamic benefits of drafting are lost.

Likewise, at my organization, we have a CL job that is submitted hourly throughout the day every day. Normally the submitted job completes …