From: Steven Pratt <slpratt@austin.ibm.com>
To: linux-btrfs <linux-btrfs@vger.kernel.org>
Subject: nodatacsum broken?
Date: Mon, 16 Nov 2009 10:22:59 -0600 [thread overview]
Message-ID: <4B017C63.5000600@austin.ibm.com> (raw)
Did we break the ability to run with -o nodatacsum somewhere along the
way? I had not run just this option in a while (usually doing nodatacow
which implies nodatacsum). Just did a full run with just nodatacsum and
it looks like we still did csums.
from proc/mounts:
/dev/ffsbdev1 on /mnt/ffsb1 type btrfs (rw,nodatacsum)
but profile:
samples % app name symbol name
1664460 15.3103 vmlinux-2.6.31-autokern1 copy_user_generic_unrolled
1514349 13.9295 vmlinux-2.6.31-autokern1 crc32c
606147 5.5756 vmlinux-2.6.31-autokern1 rb_get_reader_page
562936 5.1781 vmlinux-2.6.31-autokern1 mutex_spin_on_owner
433405 3.9866 vmlinux-2.6.31-autokern1 ring_buffer_consume
This was for a sequential read test on the unstable tree from 11-12.
Steve
next reply other threads:[~2009-11-16 16:22 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-16 16:22 Steven Pratt [this message]
2009-11-16 16:27 ` nodatacsum broken? Chris Mason
2009-11-16 16:51 ` Steven Pratt
2009-11-16 17:23 ` Chris Mason
2009-11-16 17:40 ` Steven Pratt
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=4B017C63.5000600@austin.ibm.com \
--to=slpratt@austin.ibm.com \
--cc=linux-btrfs@vger.kernel.org \
/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.