Messages in this thread | | | Date | Thu, 22 Apr 2004 15:54:25 -0400 | From | Bill Davidsen <> | Subject | Re: Benchmarking objrmap under memory pressure |
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Hugh Dickins wrote: > On Thu, 15 Apr 2004, Bill Davidsen wrote: > >>Hugh Dickins wrote: >> >>>The worst that will happen with anonmm's mremap move, is that some >>>app might go slower and need more swap. Unlikely, but agreed possible. >> >>It appears that users on small memory machines running kde are not of >>concern to you. Unfortunately that describes a fair number of people, >>not everyone has the big memory fast system. I will try to get some >>reproducible numbers, but "consistently feels faster" is a reason to >>keep running -aa even if I can't quantify it. > > > Appearances can be deceptive. Of course I care about users, > of small or large memory machines, running kde or not. > > It appears that you do not understand that we're talking about a > case so rare that we've never seen it in practice, only by testing. > > But perhaps we haven't looked out for it enough (no printk), I'd better > put something in to tell us when it does occur, thanks for the reminder. > > If -aa consistently feels faster to you, great, go with it: > but I doubt it's because of this issue we're discussing!
I don't disagree on that, but it seems that KDE developers have put some serious effort into making the software well-behaved, and unless there is some measurable benefit from the code which negates the benefits of that effort, it seems desirable to appreciate code code by letting it work.
I was more commenting on the good performance at the bottom end than addressing the large machines. All the big machines I have are in the overkill range, and finding small benefits doesn't do much with production loads, so I can't contribute any useful info at that end.
-- -bill davidsen (davidsen@tmr.com) "The secret to procrastination is to put things off until the last possible moment - but no longer" -me - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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