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Nick Piggin writes: > Nick Piggin wrote: > > Linus Torvalds wrote: > > > >> > >> Why do you think the IO layer should get larger requests? > > > > > > For workloads where plugging helps (ie. lots of smaller, contiguous > > requests going into the IO layer), should be pretty good these days > > due to multiple readahead and writeback. > > Let me try again. > > For workloads where plugging helps (ie. lots of smaller, contiguous > requests going into the IO layer), the request pattern should be > pretty good without plugging these days, due to multiple page > readahead and writeback. Pageout by VM scanner doesn't benefit from those, and it is still quite important in some workloads (e.g., mmap intensive). Nikita. - 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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