Messages in this thread |  | | | Date | Wed, 20 Feb 2008 18:24:19 +0900 | | From | KOSAKI Motohiro <> | | Subject | Re: [RFC][PATCH] the proposal of improve page reclaim by throttle | |
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 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?
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.
but (of course) I will fix regression.
> 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.
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