Build Queue_

The build queue is a list of build configurations that TeamCity will distribute to compatible build agents as they become idle. When a build is triggered, firstly it will be placed into the build queue, and, when a compatible agent becomes idle, TeamCity will run the build. You can reorder the builds by dragging them up and down in the list on the Build Queue page.

For every build in the Queue, TeamCity attempts to estimate time for build completion. Such estimates are counted basing on duration of the previous builds of the same configuration and on the duration of builds previously run on the same build agent. Build estimates are shown in a tooltip that appears if you rest on the cursor over the icon in the Time to start column.

For some builds, like builds that are part of a build chain, TeamCity can't estimate possible duration correctly, so the relevant message will be displayed in the tooltip, for example: