linux-kernel - Re: speed trends in pata world.

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Message-ID: <f6h2ho$b44$1@sea.gmane.org>
Date:	Thu, 05 Jul 2007 00:13:50 +0300
From:	Thomas Backlund <tmb@...driva.org>
To:	linux-kernel@...r.kernel.org
Subject:  Re: speed trends in pata world.

Gene Heskett skrev:
> Greetings;
> 
> The drive speeds seem to be going the wrong way.  Its an nforce2 equipt mobo, 
> and I have 3 drives currently in this box.  Running 2.6.22-rc6-cfs-v18 + the 
> ftdi_sio.c patch.
> 
> hda, the primary on cable 0, is running at around 28MB/Sec.  Its a 200GB WD 
> about 2 years old.
> 

Looks like this one is stuck at UDMA/33

Check the dmesg what the kernel detects, and why it ends up at low speed...

> hdb, is running at around 79MB/Sec, its a 4 year old 120GB WD.
> hdd is running at about 75MB/Sec, is a nearly new 300GB WD.
> 
> Can I read anything into the fact that the 2 fast drives are on the slave end 
> of the cables, whereas the slow one is master in the middle of the cable?
> 

--
Thomas

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