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AST RESEARCH, INC.        TECHNICAL BULLETIN # 1332                 7-31-95

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                           DPT3224 WITH DPTCOM.NLM


PROBLEM

Under NetWare 4.X, DPTCOM.NLM occupies a large portion of the server 
CPU utilization.


CAUSE

Do not be alarmed by the high utilization.  The system is operating as 
designed. 

"When DPTCOM.NLM is loaded, the system starts some threads to look for 
incoming connection requests.  These polling threads check for a connection 
request and return control back to NetWare.  NetWare will then determine 
which thread should be given control next.  If there are very few threads 
active on the server (very little activity), DPTCOM.NLM will be given 
control quite frequently and thus will be occupying a good proportion of the 
server utilization.  However, if there are many other active threads on the 
server, DPTCOM.NLM will be given control less frequently.

Please keep in mind that an 80% utilization by DPTCOM.NLM (or any other 
NetWare NLM) does not mean that it requires 80% of the server's CPU 
bandwidth to operate.  It simply means that NetWare is currently allowing 
DPTCOM.NLM to consume 80% of the CPU bandwidth based on the current 
activity occurring on the server.


SOLUTION

Distributed Processing Technology (DPT) has released the latest NetWare 
driver , NW386.ZIP, on DPT's BBS.  File NW386.ZIP contains the modified 
DPTCOM.NLM which occupies less CPU utilization even during periods of 
inactivity under NetWare 4.X.

To obtain the above mentioned file, contact Distributed Processing 
Technology's (DPT) BBS (407) 831-6432 / (407) 830-1070.


SYSTEMS AFFECTED
AST PART NUMBER AND DESCRIPTION

All servers systems.