I could post the Excel sheet, etc. but it's basically the same pattern over 24 hours yesterday.
I looked in the machine's system log to see what else was happening, and here is an example:
Mar 13 08:10:39 home IndigoServer[59884]: Error reflector connection test failed: Reflector connection is currently down.
Mar 13 08:10:39 home IndigoServer[59884]: Error reflector reconnection scheduled in 5 seconds
Mar 13 08:11:23 home IndigoServer[59884]: Error "MUD, Keypad" off (scene 45 cleanup); send failed (no acknowledgment)
Mar 13 08:13:42 home com.apple.xpc.launchd[1] (com.apple.WebKit.Networking.B8EE0159-AA6F-495C-BB87-DF90F896B38D[66937]): Service did not exit 5 seconds after SIGTERM. Sending SIGKILL.
Mar 13 08:21:04 home syslogd[55]: ASL Sender Statistics
Mar 13 08:21:05 home IndigoServer[59884]: Error reflector connection test failed: Reflector connection is currently down.
Mar 13 08:21:05 home IndigoServer[59884]: Error reflector reconnection scheduled in 5 seconds
Mar 13 08:28:49 home com.apple.xpc.launchd[1] (com.apple.WebKit.Networking.7A283C03-DA9E-43E0-A7CE-B1732B7AD035[67691]): Service did not exit 5 seconds after SIGTERM. Sending SIGKILL.
Mar 13 08:31:30 home syslogd[55]: ASL Sender Statistics
Mar 13 08:31:30 home IndigoServer[59884]: Error reflector connection test failed: Reflector connection is currently down.
Mar 13 08:31:30 home IndigoServer[59884]: Error reflector reconnection scheduled in 5 seconds
Mar 13 08:41:38 home timed[102]: settimeofday({0x5e6b7f82,0x967fa}) == 0
Mar 13 08:41:38 home syslogd[55]: ASL Sender Statistics
Mar 13 08:41:57 home IndigoServer[59884]: Error reflector connection test failed: Reflector connection is currently down.
Mar 13 08:41:57 home IndigoServer[59884]: Error reflector reconnection scheduled in 5 seconds
Mar 13 08:43:51 home com.apple.xpc.launchd[1] (com.apple.WebKit.Networking.C6ABF51E-07E9-44A7-ADBF-172435639FFB[68430]): Service did not exit 5 seconds after SIGTERM. Sending SIGKILL.
Mar 13 08:51:59 home syslogd[55]: ASL Sender Statistics
Mar 13 08:52:23 home IndigoServer[59884]: Error reflector connection test failed: Reflector connection is currently down.
Mar 13 08:52:23 home IndigoServer[59884]: Error reflector reconnection scheduled in 5 seconds
Mar 13 08:58:54 home com.apple.xpc.launchd[1] (com.apple.WebKit.WebContent.D6B9A830-C6E6-49DA-B212-4A2883655094[69144]): Service exited with abnormal code: 1
Mar 13 08:58:59 home com.apple.xpc.launchd[1] (com.apple.WebKit.Networking.37FF0E5B-D2A4-40AF-93E1-B26C293C8921[69145]): Service did not exit 5 seconds after SIGTERM. Sending SIGKILL.
Mar 13 09:02:48 home syslogd[55]: ASL Sender Statistics
Mar 13 09:02:49 home IndigoServer[59884]: Error reflector connection test failed: Reflector connection is currently down.
Mar 13 09:02:49 home IndigoServer[59884]: Error reflector reconnection scheduled in 5 seconds
Mar 13 09:07:53 home kcm[69575]: DEPRECATED USE in libdispatch client: Setting timer interval to 0 requests a 1ns timer, did you mean FOREVER (a one-shot timer)?; set a breakpoint on _dispatch_bug_deprecated to debug
I don't know if the "Service did not exit 5 seconds after SIGTERM" events are relevant, but perhaps, as the reflector reconnections are being scheduled (somehow) for 5 seconds.