张浩 wrote:
> xfs-masters
> excuse me for disturbing you.
> now we are analyzing the codes for xfs. we think in Linux, the VNODE
> layer can
> be removed with no bad effects. so we did this,but the speed of copying is
> not quicker
> as we expected.
> How we did is as follows:
> we throw off the structure of vnode,move parts of its fields such as
> v_type,v_number into the xfs's
> inode in-core because we don't know their usage. At the same time, we throw
> off all VOP operations or interfaces.
> we think this can bring the speed improve, but no.
> what your opinion about our ideas and the result?
> we are waiting for your answer!!!
> your sincerely
>
SGI has other code which relies on the vnode layer, plus it
makes it a little simpler to keep things in sync between Irix
and Linux.
As you have found the cpu overhead involved is noise compared
to everything else the filesystem is doing.
Steve
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