Hi Aryan, you should be able to see proxy performance 1 of 2 ways -- via the Management UI or via our API. If you are seeing something different or unusual in viewing this data, please advise and we can have someone follow-up with you directly.
From Management UI (enterprise.apigee.com), you can get this from the Analytics-Proxy Performance dropdown. Assuming you have some historical traffic, you will see Traffic and Average Response Time by Proxy in graphical format. You can also write custom reports via Analytics-Reports and view by a variety of different dimensions.
From the API, you can get further breakdown on Response/Processing time by Request Processing Time, Response Processing Time, Target Response Time and Total Response Time. Proxy performance of Apigee is a combination of the Request and Response Processing time. Here is a sample Analytics API call that will provide you this data summarized hourly by App for Feb. 13-14. Output will be in JSON format, so you will need to convert to whichever format you prefer. Substitute [OrgName] and [Environment] for your actual Org and Environment names.
https://api.enterprise.apigee.com/v1/o/[OrgName]/environments/[Environment]/stats/apps?&select=sum(m...
Substitute "apiproxy" for "apps" in above and you will see data by API Proxy.
Analytics API documentation can be found at: http://apigee.com/docs/analytics-services/content/use-analytics-api-measure-api-program-performance
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