Dropped K8S events in controller logs

[Kretikus]

Hi,

we have problems scaling up a specific workflow which iteself has dynamically parallel workflow nodes. When increasing the paralellisation, some workflow nodes are marked as failed.

Now, we saw in the workflow controller following messages:
E0309 07:01:58.457340 1 event.go:468] "Unable to record event: too many queued events, dropped event" event="&Event{ObjectMeta:{test-b5g7g.189b1a3adf4d4921 workflows 0 0001-01-01 00:00:00 +0000 UTC <nil> <nil> map[] map[workflows.argoproj.io/node-id:test-b5g7g-331028202 workflows.argoproj.io/node-name:test-b5g7g.test(13:file-name:chunk-13.parquet).select-artifact-for-test workflows.argoproj.io/node-start-time:1773038844000000000 workflows.argoproj.io/node-type:Pod] [] [] []},InvolvedObject:ObjectReference{Kind:Workflow,Namespace:workflows,Name:test-b5g7g,UID:fe0bc401-0ccf-4167-b0a6-e7d7a4bb2d8c,APIVersion:argoproj.io/v1alpha1,ResourceVersion:150546526,FieldPath:,},Reason:WorkflowNodeRunning,Message:Running node test-b5g7g.test(13:file-name:chunk-13.parquet).select-artifact-for-test,Source:EventSource{Component:workflow-controller,Host:,},FirstTimestamp:2026-03-09 07:01:58.457231649 +0000 UTC m=+310240.163275487,LastTimestamp:2026-03-09 07:01:58.457231649 +0000 UTC m=+310240.163275487,Count:1,Type:Normal,EventTime:0001-01-01 00:00:00 +0000 UTC,Series:nil,Action:,Related:nil,ReportingController:workflow-controller,ReportingInstance:,}"

It looks like this message comes from the k8s client library handling the k8s events.
https://github.com/kubernetes/kubernetes/blob/d0bd636b3e3c1ea7e7d732cb2c20616b0052829c/staging/src/k8s.io/client-go/tools/record/event.go#L468

Are those messages just informal or might they indicate a problem with our setup?
Is there a way to increase the event queue size?