|
Excellent reply. Basically answered my last email! Rob Berendt ================== A smart person learns from their mistakes, but a wise person learns from OTHER peoples mistakes. James Rich <james@eaerich.com> To: <midrange-l@midrange.com> Sent by: cc: midrange-l-admin@mi Fax to: drange.com Subject: RE: Will Upgrading to V4R5 impact performance??? 10/10/2001 02:49 PM Please respond to midrange-l On Wed, 10 Oct 2001, Bale, Dan wrote: > Doggone you James, I shoulda known someone was going to mention Linux! > O.K., let's rephrase the question: Is there *any* enterprise-level > systems' OS upgrade out there (all vendors) that does *not* take more > resources to operate than the previous levels? Well I consider linux enterprise-level. I guess it depends on what "enterprise-level" means. Running on S/390 I think qualifies. > And James, I'll ask because I truly don't know. When you first > installed Linux on that "old hardware", was that system near maxxing > out? Or did you have headroom to grow? Also, specific to the question > I originally asked, do the newer Linux versions take more or less > resources than earlier versions? To answer this question we have to look at what task each machine is performing (this is true of every time one looks at matching machines to load as we have seen on this list already regarding as/400 vs. NT backends, frontends, etc.). Back when we got the machines they were loaded with Windows and there duty was as a desktop machine with client access installed. Even for these small duties I believe they were near "maxing out" (though it didn't really matter - it's just a desktop machine after all). But with linux installed they are not even close to their max under similar duties. The machine I'm currently using used to be somewhat sluggish performing its duties as a windows desktop. When I switched it to linux it sped up considerably. After upgrading the linux distribution to a later release it did not slow down. Several times after upgrading the linux kernel the machine has *sped up*, not down. This includes times when it is maxed out (i.e. swapping heavily, under large load). It runs faster on a later release under maxed out conditions than it did on older releases. Linux is the only OS I know of that has done this. Our results with desktop machines that we have converted to linux servers are even more satisfactory. But as I mentioned before, all is not rosy. Newer releases (of both the kernel source code and of OS-specific software) take up more disk space and sometimes more ram than they used to. Though the linux kernel hasn't really grown in terms of ram used by very much, the system software has grown, as has X, mozilla, gnome, kde, tn5250, emacs, windowmaker, gimp, alsa, etc. So while I can run the latest kernel on my old laptop I can't install much of the new software on it. Not enough disk or ram to run all the new, cool, and useful stuff. It could be that OS/400 is the same way, but we aren't able to seperate components of the system the same way. Maybe the V5R1 kernel runs faster, but query or pdm or something takes up more space/ram/resources/whatever. Windows is largely the same: you can't have windows without explorer anymore (or win media player now it seems) so who knows if the "kernel proper" runs faster or not? You can't upgrade just what you need - it's all or nothing. James Rich james@eaerich.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.
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.