Red Hat Bugzilla – Bug 1358270
cpu utilization charts on Host list dashboard doesn't match reported values
Last modified: 2016-10-19 11:20:34 EDT
Created attachment 1182089 [details] screenshot 1: host list dashboard page Description of problem ====================== Values plotted in donut utilization charts (memory, cpu utilization) on Host list page doesn't match the actual value (which is shown in a numeric form as well inside the chart itself). Version-Release =============== On RHSC 2.0 server machine: rhscon-ui-0.0.48-1.el7scon.noarch rhscon-core-selinux-0.0.34-1.el7scon.noarch rhscon-ceph-0.0.33-1.el7scon.x86_64 rhscon-core-0.0.34-1.el7scon.x86_64 ceph-installer-1.0.14-1.el7scon.noarch ceph-ansible-1.0.5-28.el7scon.noarch On Ceph OSD machines: rhscon-core-selinux-0.0.34-1.el7scon.noarch rhscon-agent-0.0.15-1.el7scon.noarch ceph-selinux-10.2.2-22.el7cp.x86_64 ceph-common-10.2.2-22.el7cp.x86_64 ceph-base-10.2.2-22.el7cp.x86_64 ceph-osd-10.2.2-22.el7cp.x86_64 How reproducible ================ 100 % Steps to Reproduce ================== 1. Install RHSC 2.0 following the documentation. 2. Accept few nodes for the ceph cluster. 3. Create new ceph cluster named 'alpha'. 4. On all ceph machines (of either OSD or MON roles), install stress tool. 5. Run `stress --cpu N` (where N is the number of cpu of particular machine), on all ceph machines. 6. Wait about 15 minutes for collecd and RHSC 2.0 to process and report new utilization state. 7. Go to Host list page and check donut charts for cpu utilization. Actual results ============== While the charts report actual utilization value (100 %), the value plotted (graphical representation) in the donut charts itself doesn't match it, see attached screenshot, where it looks like the value represented in donut chart is about 50% instead of expected 100%. Expected results ================ The both plotted value (graphical representation of value), and numeric value should match and should read as 100%.
Additional info =============== Bear in mind that this is related to both CPU and Memory charts, as can be seen in Memory chart of the first machine, where the number reads 21.2% while the graphical representation looks like 14% instead.
Created attachment 1182110 [details] screenshot 2: Storage utilization charts reporting 90% On the other hand, Storage utilization chart seems to be working, see attached screenshot 2.
The donut charts do not appear to follow the PatternFly guidelines. See https://www.patternfly.org/pattern-library/data-visualization/donut-chart/#/_overview (there's also the code for it at https://www.patternfly.org/pattern-library/data-visualization/donut-chart/#/_code). Note: Utilization shown on donut should start at the 12 o'clock position and moves clockwise.
Tested with Server: ceph-ansible-1.0.5-32.el7scon.noarch ceph-installer-1.0.15-2.el7scon.noarch graphite-web-0.9.12-8.1.el7.noarch rhscon-ceph-0.0.41-1.el7scon.x86_64 rhscon-core-selinux-0.0.42-1.el7scon.noarch rhscon-core-0.0.42-1.el7scon.x86_64 rhscon-ui-0.0.55-1.el7scon.noarch Node: calamari-server-1.4.8-1.el7cp.x86_64 ceph-base-10.2.2-41.el7cp.x86_64 ceph-common-10.2.2-41.el7cp.x86_64 ceph-mon-10.2.2-41.el7cp.x86_64 ceph-osd-10.2.2-41.el7cp.x86_64 ceph-selinux-10.2.2-41.el7cp.x86_64 libcephfs1-10.2.2-41.el7cp.x86_64 python-cephfs-10.2.2-41.el7cp.x86_64 rhscon-agent-0.0.19-1.el7scon.noarch rhscon-core-selinux-0.0.42-1.el7scon.noarch and it works as it is expected. --> Verified
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHSA-2016:2082