In order for the Polar Signals Agent to be able to profile .NET code, the
DOTNET_PerfMapEnabled=1 environment variable needs to be set.
Below are some situations and how to troubleshoot them. If you've tried these and still haven't been able to resolve the issue, please contact support.
All I can see is memory addresses
First make sure the .NET process is started with the
DOTNET_PerfMapEnabled=1 environment variable set.
Then check that the process is successfully writing a perfmap. By default, perfmaps are written to
On Kubernetes for example this can be checked with:
kubectl exec --namespace <namespace-name> <pod-name> -- ls -la /tmp
$ kubectl exec -n default dotnet-demo -- ls -la /tmp
drwxrwxrwt 1 root root 4096 Jul 12 08:59 .
drwxr-xr-x 1 root root 4096 Jul 12 08:59 ..
-rw-r--r-- 1 root root 131811 Jul 12 08:59 perf-1.map
In this example the file we're looking for is the
For you it should be called something similar.