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Date: | Wed, 9 Mar 2005 13:50:25 -0800 |
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Harlan,
From the help screen.........
Interval File Open Rate
Interval File Open Rate is the rate per second of the number of
files opened during the interval. Opening MPE files is a CPU
intensive operation that may be, in certain circumstances, a sign
of a possible CPU bottleneck. The File Open Rate can be used to
judge the workload characterization on the system with regards to
the opening and closing of files. A high rate of file opens may
indicate poor application design. A sustained File Open Rate of
greater than 35 per second may indicate a possible CPU bottleneck.
Are you sure you program only opens the file once? I have seen times when a program would open
the file read a record and close the file.
One trick might be to turn on system file logging (Logging events 105 and 160), using SYSLOG from
the illustrious Allegro
http://www.allegro.com/software/hp3000/stuff/SYSLOG.std
Then use FILERPT from our friends at ALLEGRO,
http://www.allegro.com/software/hp3000/stuff/FILERPT.std
to see what files are being opened. Filerpt allows sorting on the number of opens.
-Craig
--- Harlan Lassiter <[log in to unmask]> wrote:
> In GLANCE/IX on the CPU screen there is a metric called -
>
> Interval File Open Rate 0.0/sec
>
> Can someone enlighten me as to what exactly this is referring to? I can
> run one batch (only thing consuming CPU time) job and watch this item and
> it shows things like 58-68/sec. I know my application well enough to know
> that it does not specifically open/close files during it's run. Only
> IMAGE, Spool and a couple of flat files are accessed. But once open, they
> remain open for the duration.
>
> Where is that number coming from?
>
> Harlan Lassiter
> Boyle Engineering Corp
> 1501 Quail St.
> Newport Beach, Ca.
> 949-476-3534
> [log in to unmask]
>
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