Messages in this thread | | | Date | Wed, 9 Dec 2015 10:38:44 +0800 | From | Herbert Xu <> | Subject | Re: rhashtable: Use __vmalloc with GFP_ATOMIC for table allocation |
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On Wed, Dec 09, 2015 at 03:36:32AM +0100, Thomas Graf wrote: > > Without knowing your exact implementation plans: introducing an > additional reference indirection for every lookup will have a > huge performance penalty as well. > > Is your plan to only introduce the master table after an > allocation has failed?
Right, obviously the extra indirections would only come into play after a failed allocation. As soon as we can run the worker thread it'll try to remove the extra indirections by doing vmalloc.
Cheers, -- Email: Herbert Xu <herbert@gondor.apana.org.au> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
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