Merge pull request #257890 from guywi-ms/patch-86

Update cross-workspace-query.md

Author: prmerger-automator[bot]

articles/azure-monitor/logs/cross-workspace-query.md

@@ -2,8 +2,8 @@
 title: Query across resources with Azure Monitor  | Microsoft Docs
 description: This article describes how you can query against resources from multiple workspaces and an Application Insights app in your subscription.
 ms.topic: conceptual
-author: bwren
-ms.author: bwren
+author: guywi-ms
+ms.author: guywild
 ms.date: 05/30/2023
 
 ---
@@ -30,6 +30,7 @@ There are two methods to query data that's stored in multiple workspaces and app
 ## Cross-resource query limits
 
 * The number of Application Insights components and Log Analytics workspaces that you can include in a single query is limited to 100.
+* Querying across a large number of resources can substantially slow down the query.
 * Cross-resource queries in log alerts are only supported in the current [scheduledQueryRules API](/rest/api/monitor/scheduledqueryrule-2018-04-16/scheduled-query-rules). If you're using the legacy Log Analytics Alerts API, you'll need to [switch to the current API](../alerts/alerts-log-api-switch.md).
 * References to a cross resource, such as another workspace, should be explicit and can't be parameterized. See [Gather identifiers for Log Analytics workspaces](?tabs=workspace-identifier#gather-identifiers-for-log-analytics-workspaces-and-application-insights-resources) for examples.