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XFS, DIRECT IO, page cache
Черт его знает чего там Domas напишет и када, на всякий случай пускай будед тута, комментарии к
xfs allows parallel (and out-of-order, if that matters) DIO, so I got 1500-2700w/s (depending on file size - seek time changes.. :) of random I/O without write-behind caching. There are few outstanding bugs that lock this down back to 250w/s (#xfs@ ( Read more... )