A Summary of Commands

spStatus

TDM Servicings Deferred

This is the number of times that a TDM servicing was deferred because the TDM interrupt came in on top of a DSP interrupt for a time slot. It is not a serious problem. It just indicates that the hardware is busy and conflicts are being resolved. It can be a potential area of difficulty if the DSP routine is too slow and the TDM overruns while it is waiting to be serviced.

Letters Received, Letters Sent, Letters Deferred, Letters Discarded

This is the number of letters received from the PC, the number of letters sent to the PC, the number of letters going to the PC that had to be temporarily stored in the overflow area because the PC was not keeping up, and the number of letters that even the overflow area could not handle and had to be discarded. Going into the overflow area is an indication of potential trouble, but is not serious if the duration is short. If the SP code continues to generate too many letters in too short of a period of time, then it becomes a serious problem. The same thing can happen if the PC cannot keep up.

Executive Time, Idle Time, Task[]

These counts indicate the load being placed on each portion of the system. The executive time is the number of times the TDM interrupted some activity of the SP Executive that was what is considered to be the idle look-for-work activity. The idle time is the number of times the TDM interrupted the look-for- work activity. When tasks are active, a line appears for each task. The index of the task is its position in the tasks[] array found in the associated sp/config/taskTbl*.c file.

UCS 1000 R4.2 Administration 585-313-507

Issue 3 April 2000 592