KNative Serving-istio Ingress data size limit.

[msgurikar]

Hi,
We are using Knative serving with Istio ingress to auto scale our grpc service based on the number of requests in Azure Kubernetes Cluster. I wanted to know what is the input data size limit in GB ingress istio load balancer is capable of handling at a time. If i send data more than 4GB at once to cluster ingress, i get very high chance of RST_STREAM error that is because of iam getting below error from queue-proxy

{"severity":"ERROR","timestamp":"2023-10-02T20:35:34.900035605Z","logger":"queueproxy","caller":"network/error_handler.go:33","message":"error reverse proxying request; sockstat: sockets: used 13\nTCP: inuse 1 orphan 0 tw 6 alloc 185 mem 17\nUDP: inuse 0 mem 1\nUDPLITE: inuse 0\nRAW: inuse 0\nFRAG: inuse 0 memory 0\n","commit":"f60eb32","knative.dev/key":"testsvc/test-service-latest","knative.dev/pod":"test-service-latest-deployment-c95d68dd8-xtsns","error":"context canceled","stacktrace":"knative.dev/pkg/network.ErrorHandler.func1\n\tknative.dev/[email protected]/network/error_handler.go:33\nnet/http/httputil.(*ReverseProxy).ServeHTTP\n\tnet/http/httputil/reverseproxy.go:475\nknative.dev/serving/pkg/queue.(*appRequestMetricsHandler).ServeHTTP\n\tknative.dev/serving/pkg/queue/request_metric.go:199\nknative.dev/serving/pkg/queue/sharedmain.mainHandler.ProxyHandler.func3.2\n\tknative.dev/serving/pkg/queue/handler.go:65\nknative.dev/serving/pkg/queue.(*Breaker).Maybe\n\tknative.dev/serving/pkg/queue/breaker.go:155\nknative.dev/serving/pkg/queue/sharedmain.mainHandler.ProxyHandler.func3\n\tknative.dev/serving/pkg/queue/handler.go:63\nnet/http.HandlerFunc.ServeHTTP\n\tnet/http/server.go:2136\nknative.dev/serving/pkg/queue/sharedmain.mainHandler.ForwardedShimHandler.func4\n\tknative.dev/serving/pkg/queue/forwarded_shim.go:54\nnet/http.HandlerFunc.ServeHTTP\n\tnet/http/server.go:2136\nknative.dev/serving/pkg/http/handler.(*timeoutHandler).ServeHTTP.func4\n\tknative.dev/serving/pkg/http/handler/timeout.go:118"}

Any Suggestion to fix this issue is highly appreciated.

Thank you.