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Hello Darryl,
Am 06.05.2021 um 13:34 schrieb a4g atl <a4ginatl2@xxxxxxxxx>:
I know what the file is used for, but the question is why is the system doing so much I/O on this file?
Sorry, I can't help you from experience here.
Out of curiosity: How big is that LF? On a mostly bored 7.2 install, it's 184KB with 2900 rows, on my old 150, it's 112KB with 1900 rows. I expect that files that small fit in RAM with no efforts. I remember somehow that LFs are for reading only, so I don't expect that your observation relates to direct changes to this file, but maybe access path updates through changes of the accompanying PF. Does your QADBXREF encounter heavy I/O also? Does your system create and delete a lot of temporary (SQL) table objects?
In addition, you can try to use the iACS Database SQL debugging features on that file to see if you can get more information on what's going on.
:wq! PoC
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