GNU bug report logs - #22180
Partition alignment using parted

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From: Phillip Susi <psusi <at> ubuntu.com>
To: Ankur Tank <Ankur.Tank <at> LntTechservices.com>, "22180 <at> debbugs.gnu.org" <22180 <at> debbugs.gnu.org>
Cc: "artfri2 <at> gmail.com" <artfri2 <at> gmail.com>
Subject: bug#22180: Partition alignment using parted
Date: Fri, 25 Dec 2015 20:38:59 -0500

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On 12/24/2015 05:51 AM, Ankur Tank wrote:
> Thank you for replying Phillip, 1. How do we measure performance 
> improvement before and after partition alignment ?

hdparm -t or dd between the drive and /dev/null or /dev/zero and the
drive ( for a destructive write test ).


> 2. By above question, I meant, are there any tools/utilities 
> available which would suggest partition alignment parameters(e.g.
> how many blocks current partition can be moved to get alignment) ?

Not that I am aware of but it is simply a matter of dividing the
current start position by the desired alignment and seeing if you get
a remainder or fractional result.

parted's align-check command does this, but simply answers with a
yes/no as to whether it is aligned instead of how far off it is.

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