Path: utzoo!utgpu!water!watmath!clyde!rutgers!sri-spam!ames!pasteur!ucbvax!MIPL3.JPL.NASA.GOV!kka059
From: kka059@MIPL3.JPL.NASA.GOV
Newsgroups: comp.os.vms
Subject: Process Page Table Quota Errors
Message-ID: <880209191033.00h@Mipl3.JPL.Nasa.Gov>
Date: 10 Feb 88 03:10:33 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 40

Here's the second attempt to get this up onto the net:


  Has anybody out there observed anything similar to the following condition:

1) $CRMPSC a disk file section (in our case it's about 12000 blocks in size)
	[the available PTE count (watched with SDA) drops by about 12000
	 blocks],

2) Use the section for a little while,

3) $DELTVA the section to release the virtual memory, but the available PTE
	count does *not* go back up!

This is an intermittant problem which, when it strikes, causes the progam
to eventually die with a SYSTEM-F-VASFULL error, since the program eventually
tries to map in 48000 pages of disk file sections against a VIRTPAGCNT of
50000.  If the process page table thinks that it has one or two extra 12000 
pages pieces of disk file section(s), this exceeds the VIRTPAGCNT by at
least 10000 pages.

  If anyone has any suggestions or has observed this themselves, 
please let me know.

  P.S. We're still running VMS 4.4 :-(

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|    Kurt Andersen           |       Jet Propulsion Laboratory          |
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