TraceVersion1.md

Note: for new work, we strongly recommend using the version 2 or version 3 traces, which are more recent, more comprehensive, and provide much more data.

This trace was first announced in this January 2010 blog post.

The first dataset provides traces from a Borg cell that were taken over a 7 hour period. The workload consists of a set of tasks, where each task runs on a single machine. Tasks consume memory and one or more cores (in fractional units). Each task belongs to a single job; a job may have multiple tasks (e.g., mappers and reducers).

The trace data is available here. (SHA1 checksum: 98c87f059aa1cc37f1e9523ac691ee0fd5629188.)

The data have been anonymized in several ways: there are no task or job names, just numeric identifiers; timestamps are relative to the start of data collection; the consumption of CPU and memory is obscured using a linear transformation. However, even with these transformations of the data, researchers will be able to do workload characterizations (up to a linear transformation of the true workload) and workload generation.

The data are structured as blank-separated columns. Each row reports on the execution of a single task during a five minute period.

• Time (int) - time in seconds since the start of data collection
• JobID (int) - Unique identifier of the job to which this task belongs (may be called ParentID)
• TaskID (int) - Unique identifier of the executing task
• Job Type (0, 1, 2, 3) - class of job (a categorization of work)
• Normalized Task Cores (float) - normalized value of the average number of cores used by the task
• Normalized Task Memory (float) - normalized value of the average memory consumed by the task

The data and trace documentation are made available under the CC-BY license. By downloading it or using them, you agree to the terms of this license.

Questions? Send email or peruse the discussion group.