I can't imagine this is not possible.... but I can't figure out where to enable it.
can't system monitor (gnome-system-monitor) display disk io?
6 Answers
Why you don't use iostat :
sudo apt-get install sysstatiostat is found in sysstat package .
For example :
iostat -d 30 /dev/sda will give you I/O result in 30 s interval
1You can try nmon
sudo apt-get install nmonTry:
nmonOutput Like below:
Press d = Disk Press c = CPU Press r = RAM Press q to exit
You can also give try with:
iostatOutput like below:
Linux 3.16.0-30-generic (client01) 03/01/2016 _i686_ (2 CPU)
avg-cpu: %user %nice %system %iowait %steal %idle 39.73 24.58 2.96 0.26 0.00 32.48
Device: tps kB_read/s kB_wrtn/s kB_read kB_wrtn
sda 3.32 57.31 40.05 119879872 83767716
sdb 1.45 15.02 22.60 31424408 47273012You can use system monitor from KDE (ksysguard), open it, go to file and click on "download new tabs" then, you can download disc io.
Anyway, lots of tools let you watch disc IO, for example gnome-shell plugins, Unity indicators, KDE plasmoids or conky.
2I gave up on gnome-system-monitor for this reason.
On my 12.04 machines I installed indicator-multiload. Once installed you can use the Preferences page to get it so show disk i/o - along with memory, swap, network, etc...
2There are lot of tools to monitor system stats. I have written a script for system profiling. You can use this as well more over.
You can use iotop & iostat. They will give you a better representation of system utilization. sysstat package will give you access to other monitoring utilities.
# apt-get install iotop sysstat
# iostat -dx
Linux 4.4.0-64-generic (ip-172-16-27-59) 03/10/2017 _x86_64_ (4 CPU)
Device: rrqm/ swrqm/s r/s w/s rkB/s wkB/s avgrq-sz avgqu-sz await r_await w_await svctm %util
xvda 0.00 4.36 0.83 2.77 15.64 56.59 40.14 0.01 2.18 0.82 2.59 0.63 0.23
xvdb 0.00 0.09 0.01 0.11 0.06 7.21 120.59 0.00 1.29 0.85 1.35 0.34 0.00From man iostat:
r/s The number (after merges) of read requests completed per second for the device.
w/s The number (after merges) of write requests completed per second for the device.
rsec/s (rkB/s, rMB/s) The number of sectors (kilobytes, megabytes) read from the device per second.
wsec/s (wkB/s, wMB/s) The number of sectors (kilobytes, megabytes) written to the device per second.These values give you exact idea about Disk IO.
1The new System Monitor in GNOME 3.26 can do that.
You can easily upgrade to Ubuntu 17.10 to get the new version.
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