Hard disk graph in panel applet constantly reads 0%

[Ryan Steele]

Binary package hint: gnome-system-monitor

The hard disk usage graph in the System Monitor panel applet constantly displays 0% activity, even during intervals of heavy disk access. This graph worked correctly under Hardy Heron. I am using two 500GB SATA drives in a RAID-0 configuration.

Steps to reproduce:
1. Add the System Monitor applet to a panel
2. From the applet's Preferences window, enable the hard disk activity graph
3. Perform a hard-disk intensive task (e.g. run the Disk Usage Analyzer)

Expected outcome:
Disk activity is indicated on the graph, and the tooltip indicates the percentage

Actual outcome:
The graph remains flat, and the tooltip indicates 0% disk usage

ProblemType: Bug
Architecture: amd64
DistroRelease: Ubuntu 8.10
ExecutablePath: /usr/bin/gnome-system-monitor
Package: gnome-system-monitor 2.24.0-0ubuntu1
ProcEnviron:
 LANG=en_CA.UTF-8
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
 SHELL=/bin/bash
SourcePackage: gnome-system-monitor
Uname: Linux 2.6.27-4-generic x86_64

[eugenia (draeugeniasu)]

no entiendo , hablo español. me interesa un curso completo de linux "completo", con un poco de mas nivek que los que he revisado.

----- Mensaje original ----
De: Ryan Steele <email address hidden>
Para: <email address hidden>
Enviado: domingo, 28 de septiembre, 2008 17:32:43
Asunto: [Bug 275604] [NEW] Hard disk graph in panel applet constantly reads 0%

Public bug reported:

Binary package hint: gnome-system-monitor

The hard disk usage graph in the System Monitor panel applet constantly
displays 0% activity, even during intervals of heavy disk access. This
graph worked correctly under Hardy Heron. I am using two 500GB SATA
drives in a RAID-0 configuration.

Steps to reproduce:
1. Add the System Monitor applet to a panel
2. From the applet's Preferences window, enable the hard disk activity graph
3. Perform a hard-disk intensive task (e.g. run the Disk Usage Analyzer)

Expected outcome:
Disk activity is indicated on the graph, and the tooltip indicates the percentage

Actual outcome:
The graph remains flat, and the tooltip indicates 0% disk usage

ProblemType: Bug
Architecture: amd64
DistroRelease: Ubuntu 8.10
ExecutablePath: /usr/bin/gnome-system-monitor
Package: gnome-system-monitor 2.24.0-0ubuntu1
ProcEnviron:
LANG=en_CA.UTF-8
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
SHELL=/bin/bash
SourcePackage: gnome-system-monitor
Uname: Linux 2.6.27-4-generic x86_64

** Affects: gnome-system-monitor (Ubuntu)
     Importance: Undecided
         Status: New

** Tags: apport-bug

--
Hard disk graph in panel applet constantly reads 0%
https://bugs.launchpad.net/bugs/275604
You received this bug notification because you are subscribed to gnome-
system-monitor in ubuntu.

Status in “gnome-system-monitor” source package in Ubuntu: New

Bug description:
Binary package hint: gnome-system-monitor

The hard disk usage graph in the System Monitor panel applet constantly displays 0% activity, even during intervals of heavy disk access. This graph worked correctly under Hardy Heron. I am using two 500GB SATA drives in a RAID-0 configuration.

Steps to reproduce:
1. Add the System Monitor applet to a panel
2. From the applet's Preferences window, enable the hard disk activity graph
3. Perform a hard-disk intensive task (e.g. run the Disk Usage Analyzer)

Expected outcome:
Disk activity is indicated on the graph, and the tooltip indicates the percentage

Actual outcome:
The graph remains flat, and the tooltip indicates 0% disk usage

ProblemType: Bug
Architecture: amd64
DistroRelease: Ubuntu 8.10
ExecutablePath: /usr/bin/gnome-system-monitor
Package: gnome-system-monitor 2.24.0-0ubuntu1
ProcEnviron:
LANG=en_CA.UTF-8
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
SHELL=/bin/bash
SourcePackage: gnome-system-monitor
Uname: Linux 2.6.27-4-generic x86_64

      ____________________________________________________________________________________
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[Sebastien Bacher (seb128)]

Thank you for your bug report. The applet is in gnome-applet reassigning, to send to bugzilla.gnome.org by somebody having the bug

[eugenia (draeugeniasu)]

No escribo en ingles, pero logro entender la lectura , siento no haber entrado periòicamente al mail .
Soy partidaria de un internet par todos .
Voy a tomar un curso de Linus .
Los manuales que hay disponibles en mi idioma( que he leido) no siempre me han sido utiles .
Gracias por su paciencia .
Euge

----- Mensaje original ----
De: Sebastien Bacher <email address hidden>
Para: <email address hidden>
Enviado: lunes, 29 de septiembre, 2008 4:32:16
Asunto: [Bug 275604] Re: Hard disk graph in panel applet constantly reads 0%

Thank you for your bug report. The applet is in gnome-applet
reassigning, to send to bugzilla.gnome.org by somebody having the bug

** Changed in: gnome-applets (Ubuntu)
Sourcepackagename: gnome-system-monitor => gnome-applets
   Importance: Undecided => Low
     Assignee: (unassigned) => Ubuntu Desktop Bugs (desktop-bugs)

--
Hard disk graph in panel applet constantly reads 0%
https://bugs.launchpad.net/bugs/275604
You received this bug notification because you are subscribed to gnome-
system-monitor in ubuntu.

Status in “gnome-applets” source package in Ubuntu: New

Bug description:
Binary package hint: gnome-system-monitor

The hard disk usage graph in the System Monitor panel applet constantly displays 0% activity, even during intervals of heavy disk access. This graph worked correctly under Hardy Heron. I am using two 500GB SATA drives in a RAID-0 configuration.

Steps to reproduce:
1. Add the System Monitor applet to a panel
2. From the applet's Preferences window, enable the hard disk activity graph
3. Perform a hard-disk intensive task (e.g. run the Disk Usage Analyzer)

Expected outcome:
Disk activity is indicated on the graph, and the tooltip indicates the percentage

Actual outcome:
The graph remains flat, and the tooltip indicates 0% disk usage

ProblemType: Bug
Architecture: amd64
DistroRelease: Ubuntu 8.10
ExecutablePath: /usr/bin/gnome-system-monitor
Package: gnome-system-monitor 2.24.0-0ubuntu1
ProcEnviron:
LANG=en_CA.UTF-8
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
SHELL=/bin/bash
SourcePackage: gnome-system-monitor
Uname: Linux 2.6.27-4-generic x86_64

      ____________________________________________________________________________________
Premios MTV 2008¡En exclusiva! Fotos, nominados, videos, y mucho más! Mira aquí http://mtvla.yahoo.com/

[Pedro Villavicencio (pedro)]

eugenia, may you please stop commenting on this report? it's not every close to be related to linux training courses, thanks.

spanish just in case: eugenia podrias por favor parar de comentar en este reporte? no tiene nada que ver con cursos de linux, gracias.

[Sebastien Bacher (seb128)]

could you run mount and attach the log to the bug? what stats do you have in the /sys/block/device corresponding to the disk which is active there?

[Ryan Steele (rgsteele)]

Here's the relevant line from /proc/diskstats, I hope this is what you were looking for:

   9 0 md0 341301 0 11722482 0 63509 0 508072 0 0 0 0

I've attached the output of mount.

[Sebastien Bacher (seb128)]

could you look if the stats are changing?

[Ryan Steele (rgsteele)]

Yes, they are. I ran cat /proc/diskstats | grep 'md0 ' a few times while running the Disk Usage Analyzer:

   9 0 md0 454824 0 15568962 0 302038 0 2416304 0 0 0 0
   9 0 md0 455147 0 15571546 0 302038 0 2416304 0 0 0 0
   9 0 md0 455432 0 15573898 0 302038 0 2416304 0 0 0 0
   9 0 md0 455680 0 15575882 0 302038 0 2416304 0 0 0 0
   9 0 md0 455896 0 15577682 0 302665 0 2421320 0 0 0 0
   9 0 md0 456155 0 15579866 0 302665 0 2421320 0 0 0 0
   9 0 md0 456364 0 15581538 0 302665 0 2421320 0 0 0 0
   9 0 md0 456585 0 15583306 0 302669 0 2421352 0 0 0 0
   9 0 md0 456897 0 15585802 0 302669 0 2421352 0 0 0 0

[Obrouni (nick-fisk)]

I am also having this problem.

However like Ryan most of my system is on a Linux software raid disk. I have 1 partition which is not on raid and the graph displays correctly for it.

As a rough hunch I would guess that the disk system monitor graph seems to only poll "sdX" and "hdX" devices and not "mdX".

[Sebastien Bacher (seb128)]

the read stat seems to not be updated which suggests that's not an applet bug

[midnightflash (midnightflash)]

I'm also affected with Gentoo (and Ubuntu on the same machine) since a long time with mdadm-raid setups.

The description should be changed according that raid systems are affected.

[Sebastien Bacher (seb128)]

thank you for sending the bug to GNOME

[John Neffenger (jgneff)]

I'm seeing the problem, but I'm not using RAID. I have two encrypted partitions -- one setup up automatically during installation, and the other set up manually with cryptsetup and LUKS.

I copied some big files from one encrypted partition on one hard drive to another encrypted partition on another hard drive. The GNOME System Monitor Disk graph showed no activity and always read "0% in use."

In case it helps, here are a few "cat /proc/diskstats | grep 'sda5'" where /dev/sda5 was being read:

8 5 sda5 508674 162562 89202476 2621612 217217 396877 4915240 4481024 0 1655820 7106140
8 5 sda5 508902 162639 89257316 2621928 217217 396877 4915240 4481024 0 1656068 7106452
8 5 sda5 509192 162834 89325884 2622336 217217 396877 4915240 4481024 1 1656384 7106860
8 5 sda5 509435 162996 89380980 2622720 217217 396877 4915240 4481024 0 1656648 7107244
8 5 sda5 509690 163158 89439404 2623040 217217 396877 4915240 4481024 0 1656888 7107564

And here are a few "cat /proc/diskstats | grep 'sdb3'" where /dev/sdb3 was being written:

8 19 sdb3 910 4335 8085 39740 1442684 8492129 79484712 34341148 50 935392 34797252
8 19 sdb3 910 4335 8085 39740 1443024 8507159 79596096 34435400 92 936644 34899536
8 19 sdb3 910 4335 8085 39740 1443300 8513908 79684296 34544964 0 937684 35008688
8 19 sdb3 911 4335 8093 39748 1445398 8517307 79728232 34546388 3 938172 35010120
8 19 sdb3 911 4335 8093 39748 1446796 8537921 79853568 34583604 93 939416 35063652

[Olivier Grisel (olivier-grisel)]

Same here on Ubuntu 8.10 x86 (32 bits) and gnome-applets 2.24.1-0ubuntu1, here is the output of my mount command:

/dev/mapper/Ubuntu-root on / type ext3 (rw,relatime,user_xattr,errors=remount-ro)
tmpfs on /lib/init/rw type tmpfs (rw,nosuid,mode=0755)
/proc on /proc type proc (rw,noexec,nosuid,nodev)
sysfs on /sys type sysfs (rw,noexec,nosuid,nodev)
varrun on /var/run type tmpfs (rw,nosuid,mode=0755)
varlock on /var/lock type tmpfs (rw,noexec,nosuid,nodev,mode=1777)
udev on /dev type tmpfs (rw,mode=0755)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev)
devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=620)
fusectl on /sys/fs/fuse/connections type fusectl (rw)
/dev/sda1 on /boot type ext3 (rw,relatime)
securityfs on /sys/kernel/security type securityfs (rw)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,noexec,nosuid,nodev)
gvfs-fuse-daemon on /home/ogrisel/.gvfs type fuse.gvfs-fuse-daemon (rw,nosuid,nodev,user=ogrisel)

AFAIR it use to work with previous versions of Ubuntu 7.10 almost surely and probably 8.04 too. I haven't changed my hard drive settings since that time, I just followed the regular Ubuntu upgrading steps.

No RAID, no disk encryption, just a single laptop hardrive formatted as ext3 + lvm by the ubuntu installer a couple of years ago (probably 7.04).

[Colan Schwartz (colan)]

This is still a problem in Jaunty. I'm using all RAID FSes, by the way.

[Craigus (c-o-hopkins)]

likewise in Jaunty 64-bit. No raid here, but running Jaunty in an encrypted lvm set up on install

[Jesse (sbjesse)]

Strange enough, the multiload-applet-2 in Debian Lenny does show disk activity on LVM volumes!

[Dawning (dawning)]

Seems fine for me on Ubuntu 10.04 64 Beta 2.. I'm seeing my LVMs activity in there.. :)

[Dawning (dawning)]

Though judging by the HDD LED on my box, as much as it's got some impulses being reported while my LVM is busy.. The indicated activity is WAY less than what I think the actual activity level is. It's possible that the applet is only reporting activity of my system drive or something (which is NOT in my LVM).

[Dawning (dawning)]

Yeah, you know, I'm gonna have to say nevermind about my previous comments of it looking fine. I definitely see disk io, but it's totally totally not reflective of the actual system io.. Looks like some work is needed here. I'd also love it if there was a means of illustrating different disks io too, but you know, we can worry about that desire later :)

[Craigus (c-o-hopkins)]

Still getting it after getting Karmic to Jaunty using apt-cdrom and the alternate cd.

[Dawning (dawning)]

Just in thinking about this, I'm betting that this functionality may work well if leveraging info provided in /proc

Anyone happen to know how it looks for disk IO as it stands?

[Ryan Steele (rgsteele)]

Haven't looked into this in awhile, but here are some links to other possibly related bug reports:

https://bugs.launchpad.net/gnome-system-monitor/+bug/126618
https://bugzilla.gnome.org/show_bug.cgi?id=160441
https://bugzilla.gnome.org/show_bug.cgi?id=586853
https://bugzilla.redhat.com/show_bug.cgi?id=469668