Messages in this thread |  | | From | safemode <> | Subject | Re: graphical swap comparison of aa and rik vm | Date | Thu, 1 Nov 2001 08:47:16 -0500 |
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On Thursday 01 November 2001 07:10, Rik van Riel wrote: > On Thu, 1 Nov 2001, Mark Hahn wrote: > > also, if you merely sum the SI and SO columns for each: > > sum(SI) sum(SO) sum(SI+SO) > > Rik-VM 43564 317448 290032 > > AA-VM 118284 171748 361012 > > to me, this looks like the same point: Rik being SO-happy, > > Andrea having to SI a lot more. interesting also that Andrea wins the > > race, in spite of poorer SO choices and more swap traffic overall. > > I think this is because in safemode's test, the swap space > gets exhausted. My VM works better when there is lots of > swap space available but degrades in the (rare) case where > swap space is exhausted. > > Testing corner cases always gives interesting results ;) > > regards, > > Rik
In my previous post i mentioned something like that as to why your vm didn't perform as well. The thing isn't that you use all of my available memory (ram + swap), it's that you allocate it all, leaving nothing for the program later on. I think anything that uses almost a gig of ram outside of databases is going to be a corner case, but perhaps a better way to figure out how much memory should be allocated is needed here. Andrea's vm seems to do a good job at that. if only he could figure out a better way to swap out pages correctly the first time (as some people say his made more mistakes than yours) then i cant really find anything bad about it. And i'm trying to.
Also as others pointed out. After the process was done. You had quite a lot more swap still allocated. Why exacty? - 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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