Add more Java instructions to the profiler tutorial. (#176)

* Add more Java instructions to the profiler tutorial.

Signed-off-by: Hannah Troisi <htroisi@pixielabs.ai>

* address Omid's comments

Signed-off-by: Hannah Troisi <htroisi@pixielabs.ai>

Author: htroisi

content/en/04-tutorials/01-pixie-101/06-profiler.md

@@ -19,7 +19,11 @@ You will need a Kubernetes cluster with Pixie installed. If you do not have a cl
 
 ### Enabling Java Support
 
-Java support is a beta feature and must be manually enabled during the deployment of Pixie.
+Java support is a beta feature available in Pixie vizier version 0.10.22+, and must be manually enabled during the deployment of Pixie.
+
+<Alert variant="outlined" severity="info">
+  Instructions for identifying and updating your Pixie vizier version can be found <a href="/reference/admin/updating-pixie/#updating-pixie-cloud-and-vizier">here</a>.
+</Alert>
 
 To enable Java support when deploying Pixie with the [Pixie CLI](/installing-pixie/install-schemes/cli/), run:
 
@@ -33,6 +37,8 @@ To enable Java support when deploying Pixie with [Helm](/installing-pixie/instal
 helm install pixie pixie-operator/pixie-operator-chart --set deployKey=<deploy-key-goes-here> --set clusterName=<cluster-name> --namespace pl --create-namespace --set dataCollectorParams.customPEMFlags.PL_PROFILER_JAVA_SYMBOLS=true
 ```
 
+For best results, run Java applications with `-XX:+PreserveFramePointer`.
+
 ## Setup
 
 We are going to be working with GCP's [Online Boutique](https://github.com/GoogleCloudPlatform/microservices-demo), a microservices demo application for a web-based e-commerce app where users can browse and purchase items.