Messages in this thread | | | Date | Wed, 20 Feb 2008 18:49:03 +0900 | From | "minchan Kim" <> | Subject | Re: [RFC][PATCH] the proposal of improve page reclaim by throttle |
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On Feb 20, 2008 6:24 PM, KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> wrote: > Hi Kim-san > > Do you adjust hackbench parameter? > my parameter adjust my test machine(8GB mem), > if unchanged, maybe doesn't works it because lack memory.
I already adjusted it. :-) But, In my desktop, I couldn't make to consune my swap device above half. (My swap device is 512M size) Because my kernel almost was hang before happening many swapping. Perhaps, it might be a not hang. However, Although I wait a very long time, My box don't have a any response. I will try do it more.
> > I am a many interested in your patch. so I want to test it with exact > > same method as you did. > > I will test it in embedded environment(ARM 920T, 32M ram) and my > > desktop machine.(Core2Duo 2.2G, 2G ram) > > Hm > I don't have embedded test machine. > but I can desktop. > I will test it about weekend. > if you don't mind, could you please send me .config file > and tell me your test kernel version?
I mean I will test your patch by myself. Because I already have a embedded board and Desktop.
> Thanks, interesting report. > > > > I guess this patch won't be efficient in embedded environment. > > Since many embedded board just have one processor and don't have any > > swap device. > > reclaim conflict rarely happened on UP. > thus, my patch expect no improvement.
I agree with you.
> but (of course) I will fix regression.
I didn't say your patch had a regression. What I mean is just that I am concern about it. Actually, Many VM guys is working on server environment. They didn't try to do performance test in embedde system. and that patch was submitted in mainline.
Actually, I am concern about it.
> > So, How do I evaluate following field as you did ? > > > > * elapse (what do you mean it ??) > > * major fault > > /usr/bin/time command output that. > > > > * max parallel reclaim tasks: > > * max consumption time of > > try_to_free_pages(): > > sorry, I inserted debug code to my patch at that time. >
Could you send me that debug code ? If you will send it to me, I will test it my environment (ARM-920T, Core2Duo). And I will report test result.
-- Thanks, barrios
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