Add graph of tool usage over time to the HTML instrumentation report#204
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Add a new tool usage line graph to the instrumentation report. More generally, this commit introduces the ability to generate "usage" / "concurrency" line graphs, which can show how the number of jobs that are scheduled varies over time, partitioned by some arbitrary function. The base `ConcurrencyLineGraph` just shows how many jobs are running at one time, which isn't useful in tandem with the existing parallelism chart. But if we have metadata available, then we can instead render a `ToolUsageLineGraph`, where we partition the running jobs by tool used. This graph can be one of the largest (e.g. 2MB for 50k jobs) - in the future, it would be nice to be able to apply some sort of sensible quantization / smoothing of the graph data to reduce the resolution for the normal rendering profile, to further reduce the size of the generated report. Signed-off-by: Alex Jones <alex.jones@lowrisc.org>
This was referenced May 20, 2026
machshev
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Nice, thanks @AlexJones0!
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This PR is the eleventh of a series of PRs to introduce instrumentation reporting to DVSim.
This PR adds a 3rd instrumentation report visualization, which is a time series graph showing how tools are used over time. This graph is only created if metadata is available in the instrumentation report. At each point in time, the graph should visualize how many jobs were running that use a given tool. The motivation is to expose:
See the commit message for more info.
Here are some examples of the generated
metrics.htmlreport from runs on the OpenTitan repository: