On Sun, Mar 23, 2003 at 11:17:16PM -0800, Andrew Morton wrote:
> In the case of ext2 the codepath which needs to be locked is very small, and
> converting it to use a per-blockgroup spinlock was a big win on the 16-way
> numas, and perhaps 8-way x440's. On 4-way xeon and ppc64 the effects were
> very small indeed - 1.5% on xeon, zero on ppc64.
And also very large on 32x NUMA-Q.
-- wli
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