Mon system shows high CPU

I recently set up a FreeAXP system running OpenVMS 8.3, SRI-IDLE and all the current 8.3 ECOs.

I am noticing that the CPU BUSY in monitor system is showing around 60% to 80% busy, even with 0 processes in COM state.

I try to do a Monitor process/TOPC to get more detail and it crashes with %SYSTEM-F-HPARITH.

I have a DS-10 that is not up to date with the ECOs and I can do Monitor Process/TOPcpu with no problems.

Is there a known fix for this issue?

I also have a SimH VAX/VMS 7.3 node in a cluster with this system, but this problem occurs when only the FreeAXP node is booted.

I did find a HP document stating that this crash could occur with the MONITOR cluster command if the versions of VMS in a cluster did not match, and that the only fix was to upgrade the other nodes.

1. Since this happens on a different screen and with out the VAX node ever being present since the FreeAXP node was present, it is clearly not the issue here.

Environment is a Macbook Pro with Virtual Box with FreeAXP running under Windows XP and optionally SimH running under Ubuntu as a satellite node.<hr>

John,

I started FreeAXP (.271) on my notebook with V7.3-2 and don't see much CPU usage with MONI SYSTEM. MONI PROC/TOPC does not fail.

In your case, what does MONITOR MODE report ?

Use PC sampling to find out, where the CPU time is being spent:

$ ANAL/SYS
SDA&gt; PCS LOAD
SDA&gt; PCS START TRACE
...
SDA&gt; PCS STOP TRACE
SDA&gt; PCS SHOW TRACE/STAT
SDA&gt; PCS UNLOAD

To find out about the %SYSTEM-F-HPARITH problem, can you create a process dump ? Issue $ SET PROC/DUMP before running MONITOR PROC/TOPCPU.

Both of these problems could be OpenVMS problems or emulator problems. Could you post the full error message ?

Volker.

Monitor mode is showing:

between 43 and 54 % Interrupt state,
6% Kernel
18% to 49% Kernel
6 to 30% idle time.

PC sampler information:

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Timestamp CPU PC IPL M Pid Routine
Module

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2-JUN 07:05:32.313574 00 FFFFFFFF.805B0C38 8 I 20200141 SYS$PEDRIVER+20C38
SYS$PEDRIVER
2-JUN 07:05:32.312692 00 FFFFFFFF.80A918B8 0 U 20200116 PTHREAD$RTL+718B8
PTHREAD$RTL
2-JUN 07:05:32.311826 00 FFFFFFFF.805B0C30 8 I 20200141 SYS$PEDRIVER+20C30
SYS$PEDRIVER
2-JUN 07:05:32.310928 00 FFFFFFFF.80038C48 0 U 20200141 EXE$CBB_REBUILD_C+00
1F8 SYSTEM_PRIMITIVES_MIN
2-JUN 07:05:32.310031 00 FFFFFFFF.805B0C3C 8 I 20200141 SYS$PEDRIVER+20C3C
SYS$PEDRIVER
2-JUN 07:05:32.309149 00 FFFFFFFF.80A68428 0 U 20200116 PTHREAD$RTL+48428
PTHREAD$RTL
2-JUN 07:05:32.308267 00 FFFFFFFF.805B0C2C 8 I 20200116 SYS$PEDRIVER+20C2C
SYS$PEDRIVER
2-JUN 07:05:32.307401 00 FFFFFFFF.8005901C 8 I 20200116 EXE$INIT_CPU_CONTEXT
_C+0069C SYSTEM_PRIMITIVES_MIN
2-JUN 07:05:32.306503 00 FFFFFFFF.805B0C3C 8 I 20200116 SYS$PEDRIVER+20C3C
SYS$PEDRIVER
2-JUN 07:05:32.305621 00 00000000.7C0CB67C 0 U 20200116 ADARTL+3567C
ADARTL
2-JUN 07:05:32.304739 00 FFFFFFFF.805B0C38 8 I 20200116 SYS$PEDRIVER+20C38
SYS$PEDRIVER
2-JUN 07:05:32.303857 00 FFFFFFFF.80A5D150 0 U 20200116 PTHREAD$RTL+3D150
PTHREAD$RTL
2-JUN 07:05:32.302991 00 FFFFFFFF.805B0C2C 8 I 20200116 SYS$PEDRIVER+20C2C
SYS$PEDRIVER
2-JUN 07:05:32.302078 00 FFFFFFFF.8005A824 8 I 20200116 SYSTEM_PRIMITIVES_MI
N+2C824 SYSTEM_PRIMITIVES_MIN
2-JUN 07:05:32.301212 00 FFFFFFFF.8005A148 8 I 20200141 SYSTEM_PRIMITIVES_MI
N+2C148 SYSTEM_PRIMITIVES_MIN
2-JUN 07:05:32.300314 00 FFFFFFFF.80038BB4 0 U 20200141 EXE$CBB_REBUILD_C+00
164 SYSTEM_PRIMITIVES_MIN

%NONAME-W-NOMSG, Message number 00000000 | | | |
%SYSTEM-F-HPARITH, high performance arithmetic trap, Imask=00000000, Fmask=00001
000, summary=01, PC=000000000005481C, PS=0000001B

Improperly handled condition, image exit forced.
Signal arguments: Number = 0000000000000006
Name = 0000000000000504
0000100000000000
0000000000001000
0000000000000001
000000000005481C
000000000000001B

Register dump:
R0 = 00000000001186F0 R1 = 0000000000000000 R2 = 00000000000113E8
R3 = 0000000000000000 R4 = 0000000000023078 R5 = 0000000000000000
R6 = 00000000000DE250 R7 = 00000000000A0048 R8 = 0000000000000001
R9 = 0000000000104CD0 R10 = 0000000000000000 R11 = 0000000000104D0C
R12 = 0000000000000001 R13 = 0000000000104CD0 R14 = 0000000000000000
R15 = 000000007AEF0670 R16 = 0000000000023078 R17 = 0000000000000000
R18 = 000000000002C2C8 R19 = 00000000001187F0 R20 = 000000000002C2C4
R21 = 0000000000104D03 R22 = 0000000000000000 R23 = 0000000000000001
R24 = 0000000000000000 R25 = 00A9E5AAFEA52F92 R26 = 00A9E5AAFEA52F92
R27 = 0000000000011278 R28 = 0000000000064D94 R29 = 000000007AE29500
SP = 000000007AE29500 PC = 000000000005481C PS = 000000000000001B

Where can I put the MONITOR.DMP file?