Bug 1366242
| Summary: | Network utilization is not calculated properly | ||||||
|---|---|---|---|---|---|---|---|
| Product: | [Red Hat Storage] Red Hat Storage Console | Reporter: | Daniel Horák <dahorak> | ||||
| Component: | core | Assignee: | anmol babu <anbabu> | ||||
| core sub component: | monitoring | QA Contact: | Daniel Horák <dahorak> | ||||
| Status: | CLOSED ERRATA | Docs Contact: | |||||
| Severity: | unspecified | ||||||
| Priority: | unspecified | CC: | anbabu, asriram, kdreyer, mkudlej, nthomas, rghatvis, shtripat, vsarmila | ||||
| Version: | 2 | ||||||
| Target Milestone: | --- | ||||||
| Target Release: | 2 | ||||||
| Hardware: | Unspecified | ||||||
| OS: | Unspecified | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | rhscon-agent-0.0.19-1.el7scon.noarch | Doc Type: | Bug Fix | ||||
| Doc Text: |
A full-duplex channel is available for communication in both directions simultaneously and hence the effective bandwidth is twice the actual bandwidth. This was not accounted for and as a consequence, the host network utilization crossed 100% if all, or some of its full-duplex channels were near-full or fully utilized. The underlying source code has been modified, and the network utilization is now calculated properly.
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Story Points: | --- | ||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2016-10-19 15:21:31 UTC | Type: | Bug | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
| Bug Depends On: | |||||||
| Bug Blocks: | 1346350, 1353450, 1357777 | ||||||
| Attachments: |
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Looks good to me Tested and verified on: Red Hat Enterprise Linux Server release 7.3 (Maipo) USM Server: ceph-ansible-1.0.5-34.el7scon.noarch ceph-installer-1.0.15-2.el7scon.noarch graphite-web-0.9.12-8.1.el7.noarch graphite2-1.3.6-1.el7_2.x86_64 libcollection-0.6.2-27.el7.x86_64 rhscon-ceph-0.0.43-1.el7scon.x86_64 rhscon-core-0.0.45-1.el7scon.x86_64 rhscon-core-selinux-0.0.45-1.el7scon.noarch rhscon-ui-0.0.59-1.el7scon.noarch salt-selinux-0.0.43-1.el7scon.noarch selinux-policy-3.13.1-102.el7.noarch selinux-policy-targeted-3.13.1-102.el7.noarch Ceph OSD/MON 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 collectd-ping-5.5.1-1.1.el7.x86_64 collectd-5.5.1-1.1.el7.x86_64 graphite2-1.3.6-1.el7_2.x86_64 libcollection-0.6.2-27.el7.x86_64 python-cephfs-10.2.2-41.el7cp.x86_64 rhscon-agent-0.0.19-1.el7scon.noarch rhscon-core-selinux-0.0.45-1.el7scon.noarch salt-selinux-0.0.45-1.el7scon.noarch selinux-policy-targeted-3.13.1-102.el7.noarch selinux-policy-3.13.1-102.el7.noarch SELinux in enforcing mode. Tested only with full duplex interfaces. It shows correct values in charts accordingly to algorithm described in comment 3 (for full duplex interface). >> VERIFIED I have made some minor changes... Looks good to me 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 |
Created attachment 1190029 [details] Network utilization charts shows nearly 200%. Description of problem: Network utilization is calculated from the sum of maximum speed of connected networks (which is used as 100% reference value) and from the sum of actual speed on each network card for both (rx and tx) directions. This leads to strange behavior because when the network is utilized in both directions, the utilization might be higher than 100%, in my case nearly 200%. Version-Release number of selected component (if applicable): USM Server (RHEL 7.2): ceph-ansible-1.0.5-32.el7scon.noarch ceph-installer-1.0.14-1.el7scon.noarch libcollection-0.6.2-25.el7.x86_64 rhscon-ceph-0.0.40-1.el7scon.x86_64 rhscon-core-0.0.41-1.el7scon.x86_64 rhscon-core-selinux-0.0.41-1.el7scon.noarch rhscon-ui-0.0.52-1.el7scon.noarch Ceph node (RHEL 7.2): calamari-server-1.4.8-1.el7cp.x86_64 ceph-base-10.2.2-36.el7cp.x86_64 ceph-common-10.2.2-36.el7cp.x86_64 ceph-mon-10.2.2-36.el7cp.x86_64 ceph-osd-10.2.2-36.el7cp.x86_64 ceph-selinux-10.2.2-36.el7cp.x86_64 collectd-ping-5.5.1-1.1.el7.x86_64 collectd-5.5.1-1.1.el7.x86_64 libcephfs1-10.2.2-36.el7cp.x86_64 libcollection-0.6.2-25.el7.x86_64 python-cephfs-10.2.2-36.el7cp.x86_64 rhscon-agent-0.0.18-1.el7scon.noarch rhscon-core-selinux-0.0.41-1.el7scon.noarch How reproducible: 100% Steps to Reproduce: 1. Prepare USM - Ceph cluster on real HW servers. 2. Utilize network between the hosts: On one server run iperf server: # iperf -s On second server run iperf as client for all available networks: # iperf -c CLUSTER_IP --dualtest --time 3600 # iperf -c ACCESS_IP --dualtest --time 3600 (CLUSTER_IP and ACCESS_IP are IP addresses or hostnames of the first server on different interfaces) 3. Wait for a while and check Host dashboard -> Network utilization charts. Actual results: In my case (as you can see on the attached screenshot) the network is utilized for 199%. Expected results: The network utilization shouldn't be higher than 100%. Additional info: The easiest solution for this issue seems to be to use average from rx and tx speeds or for the "reference" (1OO%) value count the maximal speeds of all the connected networks in both directions. But I'm not sure that either of this solutions will be the best way how to show the utilization, because when I'll utilize just one direction, it will show 50%, but in reality it will be utilized to 100% in that direction and I'll not be able to utilize it more (in that direction). Also the behavior of the circular chart is strange for values higher than 100%.