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<== Date ==> <== Thread ==>

Subject: vxWorks stat through EPICS records
From: jbk@aps.anl.gov (Jim B. Kowalkowski)
To: tech-talk@aps.anl.gov
Date: Tue, 12 Mar 1996 11:01:24 -0600
Everyone,

I've put together ai/ao device support that efficiently gives access to the
following vxWorks statistics:

    ai:
        free_bytes       - number of bytes in IOC not allocated
        allocated_bytes  - number of bytes allocated
        load             - estimated percent CPU usage by tasks
        tcp_connections  - number of TCP connection currently in use
    ao:
        memoryScanRate   - max rate at which new memory stats can be read
        tcpScanRate      - max rate at which TCP connections can be calculated
        loadScanRate     - max rate at which load can be calulated
 
        loadSampleRate   - vxWorks spy facility samples-per-second for load
        loadSampleLength - length of time in second that samples for load
                           calculation are taken.

Get the source code from the APS ftp server:
	epics.aps.anl.gov:pub/epics/extensions/devAiStats.c

A sample database and doc are included as a comment in the source code
along with the devSup.ascii modifications needed.

Jim


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