Your message dated Wed, 22 Feb 2006 15:38:37 -0800
with message-id <[EMAIL PROTECTED]>
and subject line Bug#318950: dstat: total disk I/O double-counts md devices
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--- Begin Message ---
Package: dstat
Version: 0.5.10-1
Severity: normal
dstat shouldn't include I/O to md software RAID devices in the total disk
I/O, because such I/O also shows up for sda and sdb, etc.
This happens on i386 machines, not just AMD64, BTW.
e.g.
----total-cpu-usage---- --disk/hda----disk/sda----disk/md6---disk/total>
usr sys idl wai hiq siq|_read write _read write _read write _read write>
....
84 13 0 0 2 1| 24k 36.4M: 410B 34.9M: 0 34.9M:48.8k 108M>
.... ^^ ^^ ^^ ^^^
that's while writing a big file to /home, which is mounted on /dev/md6,
which is a RAID1 of partitions on hda and sda.
My suggestion: simply omit md devices from the totals. Hopefully the code
doesn't need to change too much to still be able to display them (e.g.
dstat -D md3,total 10) even though they're not in the total.
-- System Information:
Debian Release: testing/unstable
APT prefers testing
APT policy: (500, 'testing')
Architecture: amd64 (x86_64)
Shell: /bin/sh linked to /bin/bash
Kernel: Linux 2.6.8-11-amd64-k8
Locale: LANG=en_CA, LC_CTYPE=en_CA (charmap=ISO-8859-1)
Versions of packages dstat depends on:
ii python 2.3.5-2 An interactive high-level object-o
dstat recommends no packages.
-- no debconf information
--- End Message ---
--- Begin Message ---
Version: 0.6.1
On Thu, Feb 23, 2006 at 12:34:27AM +0100, Dag Wieers wrote:
> On Wed, 22 Feb 2006, Andrew Pollock wrote:
> >
> > I note that you say you've changed this in subversion. Has the change
> > gone into a released version?
>
> According the ChangeLog I did :)
>
> * 0.6.1 - Fishkill - released 05/09/2005
> - Look for plugins in ~/.dstat/ too
> - Added '-M list' to show the list of available modules per path
> - Fixed a bug in dpopen causing gpfs/gpfsop to fail after a while
> - Change terminal title (if terminal supports it)
> - Don't trim the cpulist to 2 items when -f (S�bastien Prud'homme)
> >>> - Exclude md-devices from total (Peter Cordes)
Sigh. If only I had my head screwed on, I'd have read that first :-}
regards
Andrew
--- End Message ---
