Bug#658670: [2.6.32 -> 3.1.8 regression] 3w-9xxx abnormally slows the system down

[Jonathan Nieder <jrnieder@gmail.com>]

Hi Csaba,

Csaba GAAL wrote:

>      At first it seemed that I have found a bug in GNU Parted
[...]
>                                    “Unable to determine the size and length 
> of /dev/sd[a-b][0-6]”
[...]

You are taking a long time to get to the point. ;-)  I suppose after
we deal with this speed regression, it will be useful to revisit that
message and see if it can be eliminated.

[...]
> http://lists.debian.org/debian-user/2011/12/msg00153.html
[...]
> With returning to the kernel in linux-image-2.6.32-5-amd64 also did the speed. 
> This also confirms that the speed degradation with 3.1.0-1-amd64 kernel has 
> nothing to do with
[...]

If I understand correctly, you are reporting a speed regression
between 2.6.32.y and 3.1.8-2.  Thanks for finding it.

Could you try versions 2.6.34-1~experimental.2 and
2.6.35~rc4-1~experimental.1 from <http://snapshot.debian.org/>, to
hopefully narrow down the regression range?

Thanks,
Jonathan