topic Re: OpenVMS 7.3-2, too process in Swapped Out state in Operating System - OpenVMS

OpenVMS 7.3-2, too process in Swapped Out state

rison so_1 — Mon, 10 Jul 2006 23:54:50 GMT

Just upgrade to OpenVMS7.3-2 and found a lot of process in "Swapped Out" State. Attached the output from "show memory" and "show system"

Re: OpenVMS 7.3-2, too process in Swapped Out state

Thomas Ritter — Tue, 11 Jul 2006 00:30:22 GMT

Bit short on memory ?

Physical Memory Usage (pages): Total Free In Use Modified
Main Memory (2.00GB) 262144 5965 247692 8487

What version did you upgrade from ?

Re: OpenVMS 7.3-2, too process in Swapped Out state

Volker Halle — Tue, 11 Jul 2006 00:33:20 GMT

Your system is apparently a little 'short on memory' and OpenVMS has swapped out (inactive) processes to regain memory.

This is not a problem, if those processes remain inactive for an extended period of time. You can use MONITOR IO to see, if there is a significant Inswap rate, this would be a reason for concern.

Volker.

Re: OpenVMS 7.3-2, too process in Swapped Out state

Volker Halle — Tue, 11 Jul 2006 00:36:38 GMT

Do you have a SHOW SYSTEM or SHOW MEMORY output from before the OpenVMS upgrade ?

There are lots of SRVnn_NAVIGATO processes, is that a normal load for your system ?

Volker.

Re: OpenVMS 7.3-2, too process in Swapped Out state

rison so_1 — Tue, 11 Jul 2006 00:47:36 GMT

It was upgraded from V7.3-1 to V7.3-2.
But we didn't have this problem before the upgrade.

Re: OpenVMS 7.3-2, too process in Swapped Out state

Thomas Ritter — Tue, 11 Jul 2006 01:05:23 GMT

Rison, you clearly have a memory shortage. Check the number of process which were run before the upgrade.
62% of your processes are outswapped.

What are the 270 SRV223_NAVIGATO processes ?

Re: OpenVMS 7.3-2, too process in Swapped Out state

Volker Halle — Tue, 11 Jul 2006 01:07:51 GMT

The 264 SRVnn_NAVIGATO processes seem to consume up to 214171 Alpha pages, this would be 1.7 GB out of your total of 2 GB of physical memory.

Find out using F$GETJPI(pid,"PPGCNT") and F$GETJPI(pid,"GPGCNT") how much pages in the working of those processes are global or private.

Maybe something isn't installed /SHARED ?

Volker.

Re: OpenVMS 7.3-2, too process in Swapped Out state

rison so_1 — Tue, 11 Jul 2006 01:11:05 GMT

I did increase the MAXPROCESSCNT from 600 to 1000 after the upgrade.

Those are Attunity connect process, SEVnn_Navigator.

Re: OpenVMS 7.3-2, too process in Swapped Out state

Wim Van den Wyngaert — Tue, 11 Jul 2006 01:21:57 GMT

You have about 650 processes active.
Your old maxproc was at 600. So, this is NOT the same load. So it could be normal.

Wim

Re: OpenVMS 7.3-2, too process in Swapped Out state

Wim Van den Wyngaert — Tue, 11 Jul 2006 01:36:06 GMT

BTW : release notes 7.3-2

The Attunity Connect "On Platform" Package, part of the OpenVMS e-Business
Infrastructure CD-ROM, will not be supported after May 31, 2004.

Wim

Re: OpenVMS 7.3-2, too process in Swapped Out state

Wim Van den Wyngaert — Tue, 11 Jul 2006 01:45:45 GMT

Try diff sys$system:setparams.dat ;-3
(replace ;-3 with the version that was 7.3-1.

May be important parameters were changed during the upgrade (e.g. wsmax). Post the result of diff.

Wim

Re: OpenVMS 7.3-2, too process in Swapped Out state

rison so_1 — Tue, 11 Jul 2006 01:56:13 GMT

SETPARAMS.DAT;41 is from the 10/JUL/06 and SETPARAMS.DAT;13 is from the 11/MAY/06.

Upgrade was done on the 10/JUN/06

Re: OpenVMS 7.3-2, too process in Swapped Out state

Wim Van den Wyngaert — Tue, 11 Jul 2006 02:32:04 GMT

I only see minor differences that can't explain the swapped out unless your system was already "full as an egg" (btw : you maxproc was at 732, not 600).

But as long as you don't have performance problems, nothing is wrong. If the inswap delays the users, you can decrease the wsquota parameter of the users using navigator (e.g. by 10%). Of course you need to restart the sessions after that.

Wim

Re: OpenVMS 7.3-2, too process in Swapped Out state

rison so_1 — Tue, 11 Jul 2006 02:35:23 GMT

Thanks all for your help.

Re: OpenVMS 7.3-2, too process in Swapped Out state

rison so_1 — Tue, 11 Jul 2006 02:36:52 GMT

Re: OpenVMS 7.3-2, too process in Swapped Out state

Wim Van den Wyngaert — Tue, 11 Jul 2006 02:47:36 GMT

I assume you did an autogen and did a diff to see what VMS proposes as changes to the parameters ?

Wim

Re: OpenVMS 7.3-2, too process in Swapped Out state

rison so_1 — Tue, 11 Jul 2006 02:53:00 GMT

Yes, I did the change according to Autogen report.

Re: OpenVMS 7.3-2, too process in Swapped Out state

Robert Gezelter — Tue, 11 Jul 2006 06:20:38 GMT

Rison So,

Please take note of the comment that Volker made about the images being installed SHARED.

The INSTALL LIST command will produce a list of all installed images. If the image being used by a large number of your processes is not installed, you will be using large amounts of memory to hold identical, read-only pages.

Thus, using INSTALL to install shareable images, you may be able to reduce the amount of memory used by several orders of magnitude (factor of 1,000 to 10,1000).

- Bob Gezelter, http://www.rlgsc.com