|
wait...so I should add 62,500 k to machine pool from the 1 gig? andy?????????????? >From: "Charly Jones" <charly301@hotmail.com> >Reply-To: midrange-l@midrange.com >To: midrange-l@midrange.com >Subject: RE: We've Added more memory...but I can't remember! >Date: Wed, 10 Jul 2002 18:27:26 +0000 > > >> > If it does, any GENERAL rule of thumb to follow for incrementing the >> > MACHINE pool? > >Rick -- > >I disagree with Andy on a couple of points. First, unless IBM has made >some >major architectural changes that I don't know about, the VAT (virtual >address translator) mechanism requires some pinned memory in the machine >pool to keep track of what "real" address is stored in each memory frame. >If I remember correctly - when you add 16 gigabytes of memory to a system >you need to put 1 gigabyte of additional memory in the machine pool just >for >that purpose alone. The rule of thumb is one sixteenth of the memory added >needs to be added to the machine pool. > >Second, the "guidelines" for acceptable faulting are totally bogus. It is >not "OK" to have hundreds of non-database faults per second. Every fault >requires something to be brought from the disks into memory. These poor >disks are busy enough (don't get me started on the disk problem.) If you >have a performance problem you can either keep buying hardware until the >performance improves enough, or you can take action to reduce the >unnecessary faulting. > >-- Charly > > >>From: "Andy Nolen-Parkhouse" <aparkhouse@attbi.com> >> >>Rick, >> >>Yes, if you do not have performance adjustment turned on, then all >>additional memory will go to *base. No, you don't need to make the >>machine pool bigger because you've added additional memory. Best bet >>would be to examine the faulting rates in your various pools, including >>the machine pool. The work management manual will provide guidelines >>for acceptable levels depending on the power of the machine. Only older >>manuals are available in any depth, perhaps there is something in >>InfoCenter. >> >>If you have oodles of memory now, why not just turn on the automatic >>adjustment and see where the pools settle. The auto tuning works much >>better than it did in the older releases and might just make your life >>easier and your users happier. >> >>Regards, >>Andy Nolen-Parkhouse >> >> > On Behalf Of Rick Rayburn >> > Subject: We've Added more memory...but I can't remember! >> > >> > ...if I need to "goose" up the machine pool with additional "wattage". >> > >> > the memory was added because we got a great deal on the chips NOT >>because >> > we >> > were experiencing problems. I believe all of the additional "K" was >>dumped >> > into *BASE but I'm not certain. >> > Does anyone remember/know if memory additions ALWAYS dump into Base? >> > If it does, any GENERAL rule of thumb to follow for incrementing the >> > MACHINE >> > pool? I believe I OVER-allocated memory to the "SPOOL POOL" by >>granting an >> > average of 300 K per active writer. Any thoughts on that as well...or >> > anything else memory-pool related? >> > >> > Thanks all. >> > >> > Rick Rayburn >> > > >"Nothing would please me more than being able to hire ten programmers and >deluge the hobby market with good software." - Bill Gates in 1976 > >"We are still waiting..." - Alan Cox in 2002 > >"Linux is only free if your time is worthless." > > >Charly Jones >253 265-6244 >Gig Harbor >Washington USA > > > >_________________________________________________________________ >Chat with friends online, try MSN Messenger: http://messenger.msn.com > >_______________________________________________ >This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing list >To post a message email: MIDRANGE-L@midrange.com >To subscribe, unsubscribe, or change list options, >visit: http://lists.midrange.com/cgi-bin/listinfo/midrange-l >or email: MIDRANGE-L-request@midrange.com >Before posting, please take a moment to review the archives >at http://archive.midrange.com/midrange-l. _________________________________________________________________ MSN Photos is the easiest way to share and print your photos: http://photos.msn.com/support/worldwide.aspx
As an Amazon Associate we earn from qualifying purchases.
This mailing list archive is Copyright 1997-2024 by midrange.com and David Gibbs as a compilation work. Use of the archive is restricted to research of a business or technical nature. Any other uses are prohibited. Full details are available on our policy page. If you have questions about this, please contact [javascript protected email address].
Operating expenses for this site are earned using the Amazon Associate program and Google Adsense.