Re: 2.6.6-mm5 oops mounting ext3 or reiserfs with -o barrier

[Lorenzo Allegrucci]

On Sunday 23 May 2004 12:03, Jens Axboe wrote:

> Here's a rolled up updated version that tries to get async notification
> of missing barrier support working as well. reiser currently doesn't
> cope with that correctly (fails mount), ext3 seems to but gets stuck.
> Andrew has that fixed already, I think :-)
>
> Lorenzo, can you test this on top of 2.6.6-mm5?

Problem fixed, but there is some performance regression

ext3 (default)
untar		read		copy		remove
0m53.861s	0m24.942s	1m30.164s	0m20.664s
0m7.132s	0m1.191s	0m0.766s	0m0.076s
0m5.807s	0m3.345s	0m9.996s	0m1.719s

ext3 (-o barrier=1)
untar		read		copy		remove
0m52.117s	0m28.502s	1m51.153s	0m25.561s
0m7.231s	0m1.209s	0m0.738s	0m0.071s
0m6.117s	0m3.191s	0m9.347s	0m1.635s

-- 
Lorenzo
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