Mediapipe graph process time metric #2942
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bstrzele
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| @@ -196,6 +203,9 @@ class MediapipeGraphExecutor { | |||
| INCREMENT_IF_ENABLED(this->mediapipeServableMetricReporter->getGraphErrorMetric(executionContext)); | |||
| } | |||
| MP_RETURN_ON_FAIL(status, "graph wait until done", mediapipeAbslToOvmsStatus(status.code())); | |||
| timer.stop(PROCESS); | |||
| double processTime = timer.template elapsed<std::chrono::microseconds>(PROCESS); | |||
| OBSERVE_IF_ENABLED(this->mediapipeServableMetricReporter->getProcessingTimeMetric(executionContext), processTime); | |||
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It is not clear to me if we want or don't want to register processing times of failed execution @dtrawins @bstrzele
In either way, I don't think this is correct because:
a) we do not register time in all error return codepaths
b) we do register time in one specific error return codepath (when if (outputPollers.size() != outputPollersWithReceivedPacket.size()) {)
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docs/metrics.md
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| @@ -241,6 +241,7 @@ For [MediaPipe Graphs](./mediapipe.md) execution there are 4 generic metrics whi | |||
| | counter | ovms_responses | Useful to track number of packets generated by MediaPipe graph. Keep in mind that single request may trigger production of multiple (or zero) packets, therefore tracking number of responses is complementary to tracking accepted requests. For example tracking streaming partial responses of LLM text generation graphs. | | |||
| | gauge | ovms_current_graphs | Number of graphs currently in-process. For unary communication it is equal to number of currently processing requests (each request initializes separate MediaPipe graph). For streaming communication it is equal to number of active client connections. Each connection is able to reuse the graph and decide when to delete it when the connection is closed. | | |||
| | counter | ovms_graph_error | Counts errors in MediaPipe graph execution phase. For example V3 LLM text generation fails in LLMCalculator due to missing prompt - calculator returns an error and graph cancels. | | |||
| | histogram | ovms_graph_processing_time_us | Time for which mediapipe graph was opened. | | |||
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Please explain more - for successful only? for failed as well? which fails count?
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🛠 Summary
CVS-160188
A Prometheus metric ovms_graph_processing_time_us for tracking graph processing of histogram type.
Uses the same buckets like for single model execution metric.
The metric tracks time allocated by the graph to serve a single user request for unary calls or the session time for the stream requests.
🧪 Checklist
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