opendc.git - The OpenDC repository.

Age	Commit message (Collapse)	Author
2021-04-07	utils: Prevent use of Intrinsics.areEqual in scheduler hot path	Fabian Mastenbroek
	This change changes the TimerScheduler implementation to prevent calling Intrinsics.areEqual in the hot path. Profiling shows that especially this call has a high overhead.
2021-04-07	utils: Cache variables in TimerScheduler's hot paths	Fabian Mastenbroek
	This change updates the TimerScheduler implementation to cache several variables in the hot paths of the implementation.
2021-03-27	compute: Migrate compute service simulator to OpenTelemetry	Fabian Mastenbroek
	This change updates the compute service simulator to use OpenTelemetry for reporting metrics of the (simulated) hosts as opposed to using custom event flows. This approach is more generic, flexible and possibly offers better performance as we can collect metrics of all services in a single sweep, as opposed to listening to several services and each invoking the handlers.
2021-03-22	simulator: Re-design consumer interface to support capacity negotiation	Fabian Mastenbroek
	This change re-designs the SimResourceConsumer interface to support in the future capacity negotiation. This basically means that the consumer will be informed directly when not enough capacity is available, instead of after the deadline specified by the consumer.
2021-03-17	simulator: Make hypervisors generic for the resource type	Fabian Mastenbroek
	This change moves the hypervisor implementations to the opendc-simulator-resources module and makes them generic to the resource type that is being used (e.g., CPU, disk or networking).
2021-03-16	utils: Prevent memory leakage in TimerScheduler	Fabian Mastenbroek
	This change fixes a possible memory leakage issue in TimerScheduler when a large number of timers was scheduled for the same timestamp.
2021-03-16	simulator: Add generic framework for resource consumption modeling	Fabian Mastenbroek
	This change adds a generic framework for modeling resource consumptions and adapts opendc-simulator-compute to model machines and VMs on top of this framework. This framework anticipates the addition of additional resource types such as memory, disk and network to the OpenDC codebase.
2021-03-09	utils: Remove unused StateFlow	Fabian Mastenbroek
	This change removes the unused StateFlow from the utils module. It has been replaced by the proper implementation in the kotlinx-coroutines library.
2021-03-07	compute: Separate cloud compute layer from bare-metal layer	Fabian Mastenbroek
	This change separates the cloud compute layer in OpenDC (e.g., Server) from the bare-metal layer (e.g., Node), such that Node and BareMetalDriver are unaware of the existence of Server and co.
2021-01-11	Convert to pull-based workload model	Fabian Mastenbroek
	This change converts the low-level workload model to be pull-based. This reduces the overhead that we experienced with our previous co-routine based approach.
2020-10-01	Move OpenDC modules into simulator root	Fabian Mastenbroek
	This change moves the OpenDC modules previously living in the simulator/opendc directory to the simulator directory itself given that we do not make a distinction between OpenDC and odcsim anymore.