From: Stan Hoeppner <stan@hardwarefreak.com>
To: xfs@oss.sgi.com
Subject: Re: Anyone using XFS in production on > 20TiB volumes?
Date: Thu, 23 Dec 2010 13:54:14 -0600 [thread overview]
Message-ID: <4D13A8E6.7090606@hardwarefreak.com> (raw)
In-Reply-To: <alpine.DEB.2.00.1012231403440.5924@p34.internal.lan>
Justin Piszcz put forth on 12/23/2010 1:07 PM:
> Main wonder I have is why when the partition is aligned to 1MiB, which is
> the default in parted 2.2+ I believe, is it slower than with no partitions?
Best guess? Those 3TB Hitachi drives use 512 byte translated native 4KB
sectors. The 9750-24 ie card doesn't know how to properly align
partitions on such drives, and/or you're using something other than
fdisk or parted to create your partitions. Currently these are the only
two partitioners that can align partitions properly on 512 byte
translated/native 4KB sector drives. Thus you're taking a performance
hit, same as with the WD "Advanced Format" drives which have 512 byte
translated/native 4KB sectors.
If you want maximum performance with least configuration headaches,
avoid 512B/4KB sector hybrid drives. If you _need_ maximum drive
capacity, live with the warts, or jump through hoops to get the
partitions aligned, or, live without partitions if you can.
--
Stan
_______________________________________________
xfs mailing list
xfs@oss.sgi.com
http://oss.sgi.com/mailman/listinfo/xfs
next prev parent reply other threads:[~2010-12-23 19:52 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-22 16:30 Anyone using XFS in production on > 20TiB volumes? Justin Piszcz
2010-12-22 16:56 ` Emmanuel Florac
2010-12-22 19:03 ` Eric Sandeen
2010-12-23 0:26 ` Emmanuel Florac
2010-12-23 0:28 ` Justin Piszcz
2010-12-23 0:56 ` Dave Chinner
2010-12-23 9:43 ` Justin Piszcz
2010-12-23 12:03 ` Emmanuel Florac
2010-12-23 18:06 ` Justin Piszcz
2010-12-23 18:55 ` Emmanuel Florac
2010-12-23 19:07 ` Justin Piszcz
2010-12-23 19:54 ` Stan Hoeppner [this message]
2010-12-23 21:48 ` Emmanuel Florac
2010-12-23 23:21 ` Stan Hoeppner
2010-12-23 21:50 ` Emmanuel Florac
2010-12-23 22:04 ` Justin Piszcz
2010-12-23 19:29 ` Justin Piszcz
2010-12-23 19:58 ` Stan Hoeppner
2010-12-24 1:01 ` Stan Hoeppner
2010-12-23 21:12 ` Eric Sandeen
2010-12-23 1:10 ` Emmanuel Florac
2010-12-22 17:06 ` Chris Wedgwood
2010-12-22 17:10 ` Justin Piszcz
2010-12-22 17:32 ` Chris Wedgwood
2010-12-22 17:35 ` Justin Piszcz
2010-12-22 18:50 ` Chris Wedgwood
2010-12-22 19:24 ` Justin Piszcz
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4D13A8E6.7090606@hardwarefreak.com \
--to=stan@hardwarefreak.com \
--cc=xfs@oss.sgi.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.