On Thu, 4 Feb 2016, Adam C. Emerson wrote: > On 04/02/2016, Sage Weil wrote: > [snip] > > (2) convert buffer::list into an intrusive_list, while embedding N > > (=3) buffer::ptr's in the buffer::raw so that most buffers require only > > 1 allocation (provided they aren't on more than N lists). > [snip] > > Do we want both, or just 1, or is there an alternative we should > > consider? > > Do we have any places in the code where we seek into a buffer::list that has a > good number of buffer::ptrs in it? If so then we could get a speedup by > switching from an intrusive list to an intrusive set (or avlset). There are a very few, but not many. They tend to be in debug code only. Re: Allen's comment: we could use small_vector<> in combination with (1) too and probably get much of the benefit, but (1) + (2) should avoid the need for it at all... sage -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
