- [Creating Fast and Lean Code](https://github.com/istio/istio/wiki/Writing-Fast-and-Lean-Code) - performance-oriented advice and guidelines for the code base

You'll find many other useful documents on our [Wiki](https://github.com/istio/istio/wiki).

## Introduction

namespace. It then executes a series of queries per requested workload to
find the following top-level workload metrics: total requests per second,
error rate, and request latency at p50, p90, and p99 percentiles. The
query results are printed to the console, organized by workload name.

All metrics returned are from server-side reports. This means that latencies
and error rates are from the perspective of the service itself and not of an

	return func() (*istioVersion.MeshInfo, error) {
		remInfo, err := getRemoteInfo(ctx, *opts)
		if err != nil {
			fmt.Fprintf((*pc).OutOrStderr(), "%v\n", err)
			// Return nil so that the client version is printed
			return nil, nil
		}
		if remInfo == nil {
			fmt.Fprintf((*pc).OutOrStderr(), "Istio is not present in the cluster with namespace %q\n", ctx.IstioNamespace())
		}
		return remInfo, err
	}
}