The thread log traces the history of when threads start, as well as how many times a thread has failed and been restarted by Thread Manager. By default, the log file is named arthread.log.
Each transaction begins with the <THRD> prefix, followed by a time stamp. Following the time stamp is detailed information about the started thread.
The format for the thread log file is as follows:
<THRD> /* <ddd mmm dd yyyy hh:mm:ss:nnnn> */ Thread Id <threadID> (thread number <threadNumber>) on <queueType> <tStatus>.
The following table explains the possible values for the entries in a thread log file.
Possible values for thread log file entries
Identifier of the server running thread (fixed-size, 10-digit number)
A sequential number assigned to the thread. This number helps recognize the thread from Windows Performance Monitor
The queue this thread lives on (for example, admin, alert, fast, list, escalation, or private)
A value of "started," "died," or "restarted"
The following are sample thread log entries:
<THRD> <0000000031> /* Thu Jan 05 2017 01:42:29.7800*/ Group/User Change Received: tid=31 lastGroupChangeTime=Thu Jan 05 01:25:09 EST 2017, Add request to Admin Queue <THRD> <0000000662> /* Thu Jan 05 2017 01:42:34.8120 */ GroupChangeRecache: tid=662 delayRecacheTime=lastGroupChangeTime=Thu Jan 05 01:25:09 EST 2017, Add request to Admin thread <THRD> <0000000023> /* Thu Jan 05 2017 01:42:56.3070 */ Group/User Change Received: tid=23 lastGroupChangeTime=Thu Jan 05 01:42:34 EST 2017, Add request to Admin Queue