Re: Strange performance change 59 -> 61/62

From: Andrew Morton (akpm@digeo.com)
Date: Fri Feb 21 2003 - 02:45:22 EST


"Martin J. Bligh" <mbligh@aracnet.com> wrote:
>
> Some more stats ... which look rather suspicious. 600% increase for
> dentry_open and __mark_inode_dirty? Hmmmmm.

__mark_inode_dirty() just got itself an smp_mb(). Would be instructive to
disable that.

dentry_open(): don't know - fs/open.c hasn't changed at all. Perhaps
dcache_rcu has caused additional pingpong?

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