The Apps Manager Accounting Report page is missing the Service Usage dashboard

Products

• VMware Tanzu Application Service

Issue/Introduction

The Accounting Report shows the App Statistics dashboard, but the Service Usage dashboard is missing.

When calling the /system_report/service_usages endpoint, the app-usage-server responds with a 502 error code.

$ curl -k -H "Authorization: $(cf oauth-token)" https://app-usage.system.example.com/system_report/service_usages -i -vvv
*   Trying 10.x.x.x...
* TCP_NODELAY set
* Connected to app-usage.system.example.com (10.x.x.x) port 443 (#0)
...
> GET /system_report/service_usages HTTP/2
> Host: app-usage.system.example.com
> User-Agent: curl/7.61.1
...
< HTTP/2 502
HTTP/2 502
...
< content-length: 67
content-length: 67

<
502 Bad Gateway: Registered endpoint failed to handle the request.

 

While calling the above endpoint, the memory usage of the app instance goes up significantly to almost 1GB:

$ cf app app-usage-server
Showing health and status for app app-usage-server in org system / space system as admin...

name:              app-usage-server
requested state:   started
routes:            app-usage.system.example.com
last uploaded:     Mon 15 Dec 12:43:21 UTC 2025
stack:             cflinuxfs4
buildpacks:
        name             version   detect output   buildpack name
        ruby_buildpack   1.10.31   ruby            ruby

type:           web
sidecars:
instances:      2/2
memory usage:   1024M
     state     since                  cpu     memory         disk           logging          cpu entitlement   details
#0   running   2025-12-15T12:44:52Z   21.8%   141.8M of 1G   237.7M of 1G   28B/s of 16K/s   82.7%
#1   running   2025-12-17T04:19:51Z   70.2%   998.6M of 1G   237.7M of 1G   40B/s of 16K/s   265.9%

Environment

TPCF v6.0.17

Cause

The service_instance_usages table grew to a point where it has 130K rows.  This volume causes the high memory usage by the app-usage-server when it tries to generate the report.

 

Resolution

Scale up the memory of the app-usage-server to 2GB.

cf scale app-usage-server -m 2G

 

Some enhancements will be included in a future release.  There are optimizations developed that should significantly reduce the memory consumption.  The app-usage-server memory setting would also be user-configurable.