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тАО12-29-2006 08:04 AM
тАО12-29-2006 08:04 AM
Process doing bunch of DIO, but to what device?
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тАО12-29-2006 08:31 AM
тАО12-29-2006 08:31 AM
Re: Process doing bunch of DIO, but to what device?
Depending on how busy your system is, you might consider:
$ monitor disk
$ show dev $1$dga32: /file
$ pipe show dev $1$dga32: /file | sea sys$pipe andyb
Andy
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тАО12-29-2006 09:22 AM
тАО12-29-2006 09:22 AM
Re: Process doing bunch of DIO, but to what device?
SDA> SHOW PROC/CHAN process
Look for the 'busy' channel(s)
Now doublecheck with SHOW MEMORY/CACHE=TOPQ (check spelling)
RMS Indexed file?
Contact Hein for Help :-)
Regards,
Hein van den Heuvel
HvdH Performance Consulting.
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тАО12-29-2006 08:09 PM
тАО12-29-2006 08:09 PM
Re: Process doing bunch of DIO, but to what device?
you can also use the IO$SDA extension to trace information about all IOs in the system.
$ ANAL/SYS
SDA> IO ! displays short help information
SDA> IO LOAD
SDA> START TRACE/NOBIO/DIO
... wait a while ...
SDA> STOP TRACE
SDA> IO SHOW TRACE/DIO
...
You can also use
SDA> IO START COLLECT/DIO /PROC (or /DEV)
SDA> IO SHOW COLLECT
SDA> IO STOP COLLECT
SDA> IO UNLOAD
SDA> EXIT
The SDA extension routines are very powerful tools for debugging.
Volker.
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тАО12-31-2006 04:01 AM
тАО12-31-2006 04:01 AM
Re: Process doing bunch of DIO, but to what device?
I'll look into SHOW MEMORY/CACH... it sounds interesting and may lead to something.
I'll also look into the IO$SDA extension; it too sound interesting and may lead to something. I'll update the thread the next time I have that process go loopy.
Thanks!
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тАО01-02-2007 09:10 AM
тАО01-02-2007 09:10 AM
Re: Process doing bunch of DIO, but to what device?
/Guenther
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тАО01-02-2007 09:20 AM
тАО01-02-2007 09:20 AM
Re: Process doing bunch of DIO, but to what device?
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тАО01-02-2007 10:39 AM
тАО01-02-2007 10:39 AM
Re: Process doing bunch of DIO, but to what device?
if the process had any INET or NTY or BG devices you may want to do SHOW DEV/FUL on them and look at the OP count
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тАО01-22-2007 02:19 AM
тАО01-22-2007 02:19 AM