Hi Lieven,
I've tried running with the -y options but haven't been able to
reproduce this issue. The first entry is stats since system boot. With
-y, it gives stats since the last report. Both bionic and cosmic behave
the same way in this regard, as can be seen in the tps value in the
first entry:
Setup:
# apt update && apt dist-upgrade -y && apt install -y sysstat
-------------------
On bionic:
root@tester:~# iostat mmcblk0 1
Linux 4.15.0-39-generic (tester) 11/20/18 _x86_64_ (4 CPU)
avg-cpu: %user %nice %system %iowait %steal %idle
25.83 0.10 5.05 0.13 0.00 68.88
Device tps kB_read/s kB_wrtn/s kB_read kB_wrtn
mmcblk0 0.12 4.93 0.00 11668 0
^C
root@tester:~#
root@tester:~#
root@tester:~# iostat -y mmcblk0 1
Linux 4.15.0-39-generic (tester) 11/20/18 _x86_64_ (4 CPU)
avg-cpu: %user %nice %system %iowait %steal %idle
36.11 0.00 5.56 0.00 0.00 58.33
Device tps kB_read/s kB_wrtn/s kB_read kB_wrtn
mmcblk0 0.00 0.00 0.00 0 0
^C
-----------------
On cosmic:
root@c:~# iostat mmcblk0 1
Linux 4.15.0-39-generic (c) 11/20/18 _x86_64_ (4 CPU)
avg-cpu: %user %nice %system %iowait %steal %idle
26.26 0.10 5.11 0.13 0.00 68.39
Device tps kB_read/s kB_wrtn/s kB_read kB_wrtn
mmcblk0 1.03 42.28 0.00 11668 0
^C
root@c:~#
root@c:~#
root@c:~# iostat -y mmcblk0 1
Linux 4.15.0-39-generic (c) 11/20/18 _x86_64_ (4 CPU)
avg-cpu: %user %nice %system %iowait %steal %idle
0.00 0.00 0.00 0.00 0.00 0.00
Device tps kB_read/s kB_wrtn/s kB_read kB_wrtn
mmcblk0 0.00 0.00 0.00 0 0
^C
-----------------
I can't proceed any further on this unless we have a reliable
reproduction case. Please add a repro case in a comment and then change
the status back from "invalid" to "new".
Thanks!
** Changed in: sysstat (Ubuntu)
Status: New => Invalid
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1803883
Title:
iostat command behaves contrary to the man page
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/sysstat/+bug/1803883/+subscriptions
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
