USER PROBLEM

As part of ROX-31744 Scale testing I have been simulating clusters with thousands of VMs, and VMs with thousands of packages (not necessarily combined). I noticed the VM UI throws "There was an error loading results timeout of 10000ms exceeded" in some situations (see screenshot).

In particular it seems to happen when a few VMs (since the number of VMs is limited to 20 through pagination) have many packages (I was using 2800 when I saw this problem). In the attached screenshot it can be seen how the query to v2/virtualmachines runs for 10 s and transfers 27 MB. I have ran the same query and got a 177 MB json document (attached here), which indeed contains only 20 VMs but each of them have plenty of CVEs (total: 92k CVEs).

This may be challenging to reproduce, since the logic to run fake workloads is not checked in yet. One way is to check out master-base/gualvare/ROX-31977-vsock-loadgen-combined, adjust compliance/virtualmachines/loadgen/deploy/loadgen-config.yaml with a high number of packages (I saw this problem while testing with 2800) and run compliance/virtualmachines/loadgen/scripts/run-loadgen.sh.

CONDITIONS
User is running virtual machines with many packages installed.

ROOT CAUSE
^{What is the root cause of the bug?}

• pending

FIX
^{How was the bug fixed (this is more important if a workaround was implemented rather than an actual fix)?}

• pending