Error log

Use the -L flag to p4d or the environment variable P4LOG to specify the Helix Core Server error output file. If no error output file is defined, errors are dumped to the p4d process' standard error. Although p4d tries to ensure that all error messages reach the user, if an error occurs and the user application disconnects before the error is received, p4d also logs these errors to its error output.

Helix Core Server also supports trace flags used for debugging. See Diagnostic flags for monitoring the server for details.