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Subject: question regarding VxStats-1-7-2h (doesn't seem to measure CPU load properly)
From: Jay Steele <[email protected]>
To: "[email protected]" <[email protected]>
Date: Mon, 25 Jul 2011 19:49:10 -0700

Hi EPICS folks,

     I tried using VxStats-1-7-2h to diagnose a VxWorks problem that it turned out was caused by a State Notation Language (SNL) transition that returned back to the same state without any delays continuously. This seemed to take so much CPU time that the VxWorks Channel Access Server just froze up.

 

    When I checked the VxStats $(P)Load PV when (1) the Channel Access Server was working just fine and when (2) it was frozen, the value was 11.8 both times. Am I correct in assuming that the $(P)Load PV should have caught this problem and showed something like 100 when the VxWorks Channel Access Server was frozen?

 

Here’s the $(P)Load PV when everything is working.

 

dbpr "21:D3:Load",10

 

ACKS: NO_ALARM      ACKT: YES           ADEL: 0

ALST: 11.4260407440213                  AOFF: 0             ASG:

ASLO: 1             ASP: 0x0            BKPT: 00            DESC: CPU Load

DISA: 0             DISP: 0             DISS: NO_ALARM      DISV: 1

DPVT: 0x1dff0ff0    DSET: 0x1ec4ce48    DTYP: VX stats      EGU: %

EGUF: 0             EGUL: 0             EOFF: 0             ESLO: 1

EVNT: 0             FLNK:CONSTANT 0     HHSV: MAJOR         HIGH: 50

HIHI: 80            HOPR: 100           HSV: MINOR          HYST: 0

INIT: 0             INP:INST_IO @cpu    LALM: 11.4260407440213

LBRK: 0             LCNT: 0             LINR: NO CONVERSION LLSV: NO_ALARM

LOLO: 0             LOPR: 0             LOW: 0              LSET: 0x1df4b6a0

LSV: NO_ALARM       MDEL: 0

MLIS: 00 00 00 00 00 00 00 00 00 00 00 00                   MLOK: 1e 1f a7 a0

MLST: 11.4260407440213                  NAME: 21:D3:Load    NSEV: NO_ALARM

NSTA: NO_ALARM      ORAW: 0             PACT: 0             PBRK: 0x0

PHAS: 0             PINI: NO            PPN: 0x0            PPNR: 0x0

PREC: 0             PRIO: LOW           PROC: 0             PUTF: 0

RDES: 0x1ed80310    ROFF: 0             RPRO: 0             RSET: 0x1ec52624

RVAL: 0             SCAN: I/O Intr      SDIS:CONSTANT       SEVR: NO_ALARM

SIML:CONSTANT       SIMM: NO            SIMS: NO_ALARM      SIOL:CONSTANT

SMOO: 0             SPVT: 0x1defdc00    STAT: NO_ALARM      SVAL: 0

TIME: 1990-01-01 18:34:43.880000000     TPRO: 0             TSE: 0

TSEL:CONSTANT       UDF: 0              VAL: 11.4260407440213

 

Thanks,

Jay Steele

Xradia Corporation



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Replies:
Re: question regarding VxStats-1-7-2h (doesn't seem to measure CPU load properly) Ralph Lange

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