opendc.git - The OpenDC repository.

Age	Commit message (Collapse)	Author
2021-11-02	refactor(trace): Support gaps in trace data	Fabian Mastenbroek
	This change updates the implementation of the trace converter and SimTrace implementation to support cases where there is a gap between samples in the trace data. This change allows users to specify what to do in case samples are missing in the trace. The available options are specified in `SimTrace.FillMode`. Currently, we support either carrying the previous value forward or set the usage to zero.
2021-10-25	feat(trace): Support conversion from Azure trace format	Fabian Mastenbroek
	This change adds support for converting the Azure VM traces into the OpenDC trace format.
2021-09-21	feat(trace): Add support for writing traces	Fabian Mastenbroek
	This change adds a new API for writing traces in a trace format. Currently, writing is only supported by the OpenDC VM format, but over time the other formats will also have support for writing added.
2021-09-20	refactor(trace): Simplify TraceFormat SPI interface	Fabian Mastenbroek
	This change simplifies the TraceFormat SPI interface by reducing the number of interfaces that implementors need to implement to only TraceFormat.
2021-09-20	feat(trace): Add property for describing partition keys	Fabian Mastenbroek

2021-09-20	feat(trace): Support column lookup via index	Fabian Mastenbroek
	This change adds support for looking up the column value through the column index. This enables faster lookup when processing very large traces.
2021-09-20	refactor(trace): Unify columns of different tables	Fabian Mastenbroek
	This change unifies columns of different tables used by trace formats. This concretely means that instead of having columns specific per table (e.g., RESOURCE_ID and RESOURCE_STATE_ID), with this changes these columns are shared between the tables with a single definition (RESOURCE_ID).
2021-09-19	feat(trace): Update OpenDC VM trace format	Fabian Mastenbroek
	This change optimizes the OpenDC VM trace format by removing unnecessary columns as well as optimizing the writer settings. The new implementation still supports reading the old trace format in case users run OpenDC with older workload traces.
2021-09-12	feat(trace): Support dynamic resolving of trace formats	Fabian Mastenbroek
	This change enables users to open traces of various trace formats by dynamically specifying the format name. The trace API will use the service loader to resolve the available trace formats on the classpath.
2021-09-12	refactor(trace): Add API for accessing available table columns	Fabian Mastenbroek
	This change adds a new API to the Table interface for accessing the table columns that the table supports. This does not necessarily mean that the column will have a value for every row, but that the table format has defined this particular column.
2021-09-11	feat(trace): Add support for WfCommons (WorkflowHub) traces	Fabian Mastenbroek
	This change adds support for reading WfCommons workflow traces in OpenDC. This functionality is available in the new `opendc-trace-wfformat` module.
2021-09-11	perf(trace): Keep reader state in own class	Fabian Mastenbroek
	This change removes the external class that holds the state of the reader and instead puts the state in the reader implementation. Maintaining a separate class for the state increases the complexity and has worse performance characteristics due to the bytecode produced by Kotlin for property accesses.
2021-09-02	perf(trace): Improve performance of column lookup	Fabian Mastenbroek

2021-09-02	refactor(capelin): Migrate trace reader to new trace API	Fabian Mastenbroek
	This change updates the trace reading classes in the Capelin experiment to use the new trace API in order to re-use many of the trace reading parts.
2021-09-01	feat(trace): Add API for trace reading	Fabian Mastenbroek
	This change introduces a new OpenDC API for reading various trace formats in a streaming manner.