summaryrefslogtreecommitdiff
path: root/opendc-telemetry/opendc-telemetry-compute/src/main
AgeCommit message (Collapse)Author
2022-05-06refactor(compute/service): Remove OpenTelemetry from "compute" modulesFabian Mastenbroek
This change removes the OpenTelemetry integration from the OpenDC Compute modules. Previously, we chose to integrate OpenTelemetry to provide a unified way to report metrics to the users. Although this worked as expected, the overhead of the OpenTelemetry when collecting metrics during simulation was considerable and lacked more optimization opportunities (other than providing a separate API implementation). Furthermore, since we were tied to OpenTelemetry's SDK implementation, we experienced issues with throttling and registering multiple instruments. We will instead use another approach, where we expose the core metrics in OpenDC via specialized interfaces (see the commits before) such that access is fast and can be done without having to interface with OpenTelemetry. In addition, we will provide an adapter to that is able to forward these metrics to OpenTelemetry implementations, so we can still integrate with the wider ecosystem.
2022-05-06refactor(telemetry/compute): Support direct metric accessFabian Mastenbroek
This change introduces a `ComputeMetricReader` class that can be used as a replacement for the `CoroutineMetricReader` class when reading metrics from the Compute service. This implementation operates directly on a `ComputeService` instance, providing better performance.
2022-02-18fix(telemetry): Fix reporting of CPU timeFabian Mastenbroek
This change fixes an issue with the CPU time aggregation for VMs in the ComputeMetricAggregator, leading to incorrect values.
2021-10-25perf(telemetry): Prevent allocations during collection cycleFabian Mastenbroek
This change redesigns the ComputeMonitor interface to reduce the number of memory allocations necessary during a collection cycle.
2021-10-25feat(telemetry): Report provisioning time of virtual machinesFabian Mastenbroek
This change adds support for collecting the provisioning time of virtual machines in addition to their boot time.
2021-10-25perf(telemetry): Do not allocate lambda in fast-pathFabian Mastenbroek
This commit changes the lookup for host and server aggregators to use `getOrPut` instead of `computeIfAbsent`. The former will inline the lambda and not cause any memory allocation in the fast-path (e.g., the key exists), while the latter always allocates lambda for constructing the aggregator.
2021-09-28fix(telemetry): Report cause of compute exporter failureFabian Mastenbroek
2021-09-28refactor(telemetry): Do not require clock for ComputeMetricExporterFabian Mastenbroek
This change drops the requirement for a clock parameter when constructing a ComputeMetricExporter, since it will now derive the timestamp from the recorded metrics.
2021-09-17refactor(telemetry): Standardize SimHost metricsFabian Mastenbroek
This change standardizes the metrics emitted by SimHost instances and their guests based on the OpenTelemetry semantic conventions. We now also report CPU time as opposed to CPU work as this metric is more commonly used.
2021-09-17refactor(telemetry): Standardize compute scheduler metricsFabian Mastenbroek
This change updates the OpenDC compute service implementation with multiple meters that follow the OpenTelemetry conventions.
2021-09-17refactor(telemetry): Create separate MeterProvider per service/hostFabian Mastenbroek
This change refactors the telemetry implementation by creating a separate MeterProvider per service or host. This means we have to keep track of multiple metric producers, but that we can attach resource information to each of the MeterProviders like we would in a real world scenario.
2021-09-17refactor(telemetry): Simplify CoroutineMetricReaderFabian Mastenbroek
This change simplifies the CoroutineMetricReader implementation by removing the seperation of reader and exporter jobs.
2021-09-17build(telemetry): Update to OpenTelemetry 1.6.0Fabian Mastenbroek
This change updates the opentelemetry-java library to version 1.6.0.
2021-09-07refactor(capelin): Move metric collection outside Capelin codeFabian Mastenbroek
This change moves the metric collection outside the Capelin codebase in a separate module so other modules can also benefit from the compute metric collection code.