deferred pages

[Damian Tometzki]

Hello together,

can anyone me short explain what is deferred page(s) ?

Many thanks

Best regards
Damian

[Damian Tometzki]

On So, 28. Okt 17:33, Damian Tometzki wrote:
Hello together,

can anyone me short explain what is deferred page(s) ?

Many thanks

Best regards
Damian

[Mulyadi Santosa]

Post by Damian Tometzki
Hello together,
can anyone me short explain what is deferred page(s) ?
Many thanks
Best regards
Damian
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Hm, did you mean delayed/lazy paging?

[Cindy-Sue Causey]

Post by Mulyadi Santosa

Post by Damian Tometzki
Hello together,
can anyone me short explain what is deferred page(s) ?
Many thanks
Best regards
Damian

Hm, did you mean delayed/lazy paging?
--
regards,
Mulyadi Santosa
Freelance Linux trainer and consultant

Hi.. I just stumbled back upon this while cleaning out my inbox this
morning. There's not much mention, under 1,000 possibilities come
back, during a search for "deferred paging" in quotation marks.

These two sources sound like they might fit the question:

#1) Paging Spaces by Tom Farwell; April 2003; IBM Systems Magazine
NOTE: Appears to potentially be a popup window that search engine
perceived as a regular webpage

http://ibmsystemsmag.com/CMSTemplates/IBMSystemsMag/Print.aspx?path=/aix/administrator/systemsmanagement/Paging-Spaces-(1)

First reference is near the top under "AIX 4.3.2+ Deferred Paging
Space". This is a quick quote that sounds like it might trigger an
ah-ha moment for some: "[...] Deferred Page Space Allocation (DPSA)
policy. DPSA delays allocating paging space slots until it's necessary
to page out the frame to paging space."

"DPSA delays allocating" sounds like it falls under your
"delayed/lazy" reference. :)

And......

#2) AIX 5L Differences Guide Version 5.3 Edition
By Scott Vetter, Adrian Demeter, Shiv Dutta, Armin Röll, SeongLul Son,
IBM Redbooks

https://books.google.com/books?id=Vrq6AgAAQBAJ&pg=PA180&lpg=PA180&dq=%22deferred+paging%22&source=bl&ots=drDJODUGBq&sig=JXjFdkrGb9ioZFauAoUcRgq7MgM&hl=en&sa=X&ved=2ahUKEwih5umfjuPeAhVyx1kKHdU4DSUQ6AEwA3oECAYQAQ#v=onepage&q=%22deferred%20paging%22&f=false

Keywords that help this sound appropriate are "AIX paging space
allocation policy and management" within a section titled... "Paging
space garbage collection". That provided an explanation that was
fairly *cognitively friendly* for me, a user who has never touched on
this concept in her own computing petri dish. Well done @ the
author(s). :)

Posting for the archives. Hope it helps someone someday. :)

Cindy :)

[v***@vt.edu]

Post by Cindy-Sue Causey
First reference is near the top under "AIX 4.3.2+ Deferred Paging
#2) AIX 5L Differences Guide Version 5.3 Edition

I feel sorry for anybody still running either of these AIX versions (4.3.2
is late 1998, 5.3 is from 2005).

Word of warning - AIX is *highly* different from Linux - it's even diverged an
amazing amount internally from its SYSV Unix roots. I wouldn't take any AIX
internals documentation as helpful for Linux, unless you also found the Bach
book on the SYSV kernel and Kirk McKusic's book on the BSD4.3 kernel useful in
understanding the Linux kernel....

I've done AIX for a living from (roughly) the RT days, through AIX/370 (now
*that* was a beta test that generated a wealth of bar stories :), and AIX 3
through AIX 5 on RS6K/Power based systems.. A lot of the stuff they do doesn't
make any sense at all unless you know how IBM's mainframe systems do things
(And yes, I spent a number of years doing OS/VS1/HASP and VM (SP, HPO, and XA
variants)