[NFS-Ganesha-Devel] Re: nfs_rpc_process_request spends 150 seconds

150 seconds is, indeed, way to long.  I've never seen anything like this before, but Windows clients aren't well tested, since none of the developers have access to them.  Some things you can do: 1. Turn on FULL_DEBUG logging.  This will slow down normal operations, but log lines all have timestamps, so you can scan through the relevant OPs to see where there's gaps in the log messages.  This can narrow down the code locations that are causing the slowdown. 2. If logging isn't possible, you can turn on LTTng tracing. This is much lower latency, and can log at scale, but is more difficult to set up, and has fewer tracepoints.  However, I've found it useful in the past to track down timing issue, especially ones that only reproduce under load.  You can, of course, add new tracepoints if you need to further narrow down the issue. Daniel On 1/13/20 7:37 AM, QR wrote: