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On Sat, 22 Mar 2008, Arjan van de Ven wrote: > can you document the drawback of large, frequent vmalloc() allocations at least? Ok. Lets add some documentation about this issue and some other things. A similar suggestion was made by Kosaki-san. > On 32 bit x86, the effective vmalloc space is 64Mb or so (after various PCI bars are ioremaped), > so if this type of allocation is used for a "scales with nr of ABC" where "ABC" is workload dependent, > there's a rather abrupt upper limit to this. > Not saying that that is a flaw of your patch, just pointing out that we should discourage usage of > the "scales with nr of ABC" (for example "one for each thread") kind of things. I better take out any patches that do large scale allocs then. -- 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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