Home · Articles · Downloads · Hobby Wear · Forums · Web Links · News CategoriesThursday, October 28, 2021
Navigation
Home
Articles
Downloads
Hobby Wear
FAQ
Forums
Web Links
News Categories
Contact Us
Photo Gallery
OpenVMS Bigot
Search
Users Online
Guests Online: 6
No Members Online

Registered Members: 7,599
Newest Member: DrFalken
Sponsors
Island Computer
View Thread
OpenVMS Hobbyist Program | VAX Systems Forums | Emulated VAX Forum
Author sys slower and slower: Is something building up over time
cmethot
Member

User Avatar

Posts: 23
Location: Calgary, Canada
Joined: 13.06.08
Posted on April 30 2010 07:05
HI!
I'm running a Compiler under a virtualed VMS 4.5 (yep) hosted on a UNIX system.

When we fire up the system in February, one of our biggest compile projects was taking 2.5 hours to compile
a great upscale from our original VAXStation II, It was taking 4 days then...)

The problem, is, that it is slightly increasing over time.
Now we are at 6 hours compiling time..(v/s 2.5 in fesmiley
no code were change in the compile task

I did re-installed the February VMS image and the compile is down to 3-4 hrs.. (Still not our original 2.5h)

I cannot reload the UNIX host system nor do I have access to it
I'm suspecting that it is a combine issues (UNIX and VMS) but cannot put the finger on it.
Anybody have idea?
VMS swapfile, dump, ?
UNIX swapfile?
UNIX defrag?
.
Author RE: sys slower and slower: Is something building up over time
VolkerHalle
Member

User Avatar

Posts: 103
Location: Germany
Joined: 02.04.10
Posted on April 30 2010 20:27
Hi,

if restarting the emulator (SIMH, I assume) or the OpenVMS system itself didn't help, the 'problem' might be on the disks (container files ?) used by the emulated system. They could have been fragmented and causing the disk-IOs to become slower. You could run MONI FCP and check for Window Turn Rate. If this seems to be the problem, defragmentation needs to be run from OpenVMS (probabaly a BACKUP/IMAGE and restore).

On OpenVMS, problems are NOT being solved by re-installing the operating system. We leave this 'troubleshooting method' to other operating systems...

Consider to record the resource usage of your compiles (CPU, DIRIO, BUFIO, Pagefaults, elapsed time) using IMAGE accounting or batch job accounting. If compiles then take longer, compare the various resources being used.

Volker.
http://www.invenate.de
Jump to Forum:
Login
Username

Password



Not a member yet?
Click here to register.

Forgotten your password?
Request a new one here.
Member Poll
Are you going to OpenVMS Boot Camp 2016?

Yes

No

You must login to vote.
Shoutbox
You must login to post a message.

gtackett
October 27 2021
Make that DECdfs _2.1A_ for Vax

gtackett
October 27 2021
I'm looking for DECdfs V2.4A kit for VAX. Asking here just in case anyone is still listening.

MarkRLV
September 17 2021
At one time, didn't this web site have a job board? I would love to use my legacy skills one last time in my career.

malmberg
January 18 2021
New Hobbyist PAKs for VAX/VMS are no longer available according to reports. Only commercial licenses are reported to be for sale from HPE

dfilip
January 16 2021
Can someone please point me to hobbyist license pak? I'm looking for VAX/VMS 7.1, DECnet Phase IV, and UCX/TCPIP ... have the 7.1 media, need the license paks ... thanks!

Bart
October 16 2020
OpenVMS, and this website!

malmberg
September 05 2020
VSI community non-commercial licenses for AXP/IA64 are available now.

malmberg
September 05 2020
See the forum about licensing. Don't know if HPE hobby licenses still being issued. Commercial licenses still being sold.

silfox70
September 01 2020
I need the license for OpenVMS7.3. Where can I find them?

malmberg
August 29 2020
Eisner, which is currently being moved, got an SSH update and the keys were updated to more modern encryption standards.

jiml
July 11 2020
ssh to eisner is now giving (on linux) "WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!" , Has the server key in fact changed ? Of WHO can we ask that somewhere on the eisner webpage they

wyan
May 06 2020
Turns out I had an account here, it still was set to my location a decade ago, so hey, I'm back after over a decade!

Hein
April 21 2020
Hi all, haven't been here in years. Good to see it is all there still. I'm looking around at the forum to stop/start msipcap - 'could not be stopped' - for now. I'll shutdown FreeA

EstesDave
January 09 2020
does anyone have or know of DRB32 manuals

romaxmaniax
November 04 2019
V6.1

Shoutbox Archive