Messages in this thread | | | Date | Fri, 30 Mar 2007 19:13:23 +0100 | From | Alan Cox <> | Subject | Re: [PATCH] nommu arch dont zero the anonymous mapping by adding UNINITIALIZE flag |
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> Summary is, when I run the app "time test", > > on x86: > real 0m0.066s > user 0m0.008s > sys 0m0.058s > > on Blackfin: > real 3m 37.69s > user 0m 0.04s > sys 3m 37.58s
What would be relevant would be Blackfin with clearing and blackfin without
> --------------------------------------------------------------- > So now the question is, > Keep the same behave as MMU but with bad performance, or keep the same > performance as MMU but without the same behave, Which one is more > important?
Behaviour.
You can implement a /dev/pages that is a copy of /dev/zero in tiny amounts of code and use that for the specific problem cases.
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