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84890c03b6
Bump the flush stripe batch size to 2048. For my 12 disks raid array, the stripes takes: 12 * 4k * 2048 = 96MB This is still quite small. A hardware raid card generally has 1GB size, which we suggest the raid5-cache has similar cache size. The advantage of a big batch size is we can dispatch a lot of IO in the same time, then we can do some scheduling to make better IO pattern. Last patch prioritizes stripes, so we don't worry about a big flush stripe batch will starve normal stripes. Signed-off-by: Shaohua Li <shli@fb.com> |
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| kernel | ||
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| README | ||
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.