How to profile ReSharper backend process

Question

How to profile the ReSharper backend process when ReSharper is in out-of-process mode?

Answer

In order to get a performance snapshot for the ReSharper backend process using dotTrace, follow these steps:

1. Download and install dotTrace Performance profiler and Select 64-bit version;
2. Start dotTrace. The dotTrace Home window will open.
3. Under Choose a preset select General;
4. Run Visual Studio with ReSharper with "out of process" mode enabled;
5. Under Running Process click on ReSharper backend exe (ReSharper.Backend64c.exe - for x64, ReSharper.Backend64ac.exe - for ARM-based systems, ReSharper.Backend32c.exe - for x32).
6. Make sure the following options are set in Profiler Options:
   1. Profiling type: Timeline (or Tracing or Sampling if you have been asked to collect exactly Tracing/Sampling snapshot).
   2. Collect profiling data from start: on (to start profiling immediately) or off otherwise.
7. Click Start.
8. If profiling starts immediately, then:
   1. Reproduce the issue;
   2. Click the Get Snapshot button in the profiling controller window.
9. Otherwise:
   1. Click the Start recording (Start) button in the profiling controller window;
   2. Perform actions which are slow with ReSharper (typing, switching between documents, building etc);
   3. Click the Get Snapshot button in the profiling controller window.
10. In dotTrace Performance Viewer, save the resulting snapshot using the File | Save Snapshot... menu.
11. Compress the snapshot file using Zip.
12. Upload the file to the JetBrains server, copy the Upload ID.
13. Create a new issue in the ReSharper issue tracker. In the issue, provide a short description of the performance problems you're experiencing and share the Upload ID.