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Re: Bug#605009: serious performance regression with ext4



On Mon, Nov 29, 2010 at 10:32:44AM -0500, Ted Ts'o wrote:
> Most files won't, but consider a postinstall script which needs to
> scan/index a documentation file, or simply run one or more binaries
> that was just installed.  I can definitely imagine situations where
> using POSIX_FADV_DONTNEED could actually hurt performance.

Kernel installation. It will use depmod and read every file again.

Bastian

-- 
	"That unit is a woman."
	"A mass of conflicting impulses."
		-- Spock and Nomad, "The Changeling", stardate 3541.9


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