Bug 1706171
| Summary: | tuned fails to apply profile with the provided core list | ||||||
|---|---|---|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Nitesh Narayan Lal <nilal> | ||||
| Component: | tuned | Assignee: | Jaroslav Škarvada <jskarvad> | ||||
| Status: | CLOSED ERRATA | QA Contact: | Robin Hack <rhack> | ||||
| Severity: | urgent | Docs Contact: | |||||
| Priority: | unspecified | ||||||
| Version: | 7.7 | CC: | bhu, jeder, jianzzha, jskarvad, lcapitulino, olysonek, pezhang, psklenar, rhack | ||||
| Target Milestone: | rc | Keywords: | Patch, Regression, Upstream | ||||
| Target Release: | --- | ||||||
| Hardware: | x86_64 | ||||||
| OS: | Unspecified | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | tuned-2.11.0-3.el7 | Doc Type: | If docs needed, set a value | ||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2019-08-06 13:04:46 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: | |||||||
| Attachments: |
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Description
Nitesh Narayan Lal
2019-05-03 17:33:16 UTC
The issue is reproducible on RT kernel(3.10.0-957.19.1.rt56.931.el7) and on non-RT kernel(3.10.0-1040.el7.x86_64) as well.
Tuned version: 2.10.0
Following are some of the logs showing the error with both above-stated kernels.
RT Kernel:
[root@intel-skylake-loaner ~]# uname -a
Linux intel-skylake-loaner.virt.lab.eng.bos.redhat.com 3.10.0-957.19.1.rt56.931.el7.x86_64 #1 SMP PREEMPT RT Mon Apr 29 10:09:25 EDT 2019 x86_64 x86_64 x86_64 GNU/Linux
[root@intel-skylake-loaner ~]# uptime
10:17:55 up 1 min, 1 user, load average: 0.35, 0.22, 0.08
[root@intel-skylake-loaner ~]# systemctl status tuned
● tuned.service - Dynamic System Tuning Daemon
Loaded: loaded (/usr/lib/systemd/system/tuned.service; enabled; vendor preset: enabled)
Active: active (running) since Tue 2019-05-07 10:16:44 EDT; 2min 11s ago
Docs: man:tuned(8)
man:tuned.conf(5)
man:tuned-adm(8)
Main PID: 8061 (tuned)
Tasks: 5
CGroup: /system.slice/tuned.service
└─8061 /usr/bin/python2 -Es /usr/sbin/tuned -l -P
May 07 10:16:43 intel-skylake-loaner.virt.lab.eng.bos.redhat.com systemd[1]: Starting Dynamic System Tuning Daemon...
May 07 10:16:44 intel-skylake-loaner.virt.lab.eng.bos.redhat.com systemd[1]: Started Dynamic System Tuning Daemon.
[root@intel-skylake-loaner ~]# tuned-adm active
Current active profile: balanced
[root@intel-skylake-loaner ~]# cat /etc/tuned/realtime-virtual-host-variables.conf
# Examples:
# isolated_cores=2,4-7
# isolated_cores=2-23
isolated_cores=19-35
[root@intel-skylake-loaner ~]# cat /sys/devices/system/cpu/online
0-35
[root@intel-skylake-loaner ~]# tuned-adm profile realtime-virtual-host
Cannot load profile(s) 'realtime-virtual-host': Assertion 'isolated_cores contains online CPU(s)' failed.
[root@intel-skylake-loaner ~]#
Non-RT Kernel:
[root@intel-skylake-loaner ~]# uname -a
Linux intel-skylake-loaner.virt.lab.eng.bos.redhat.com 3.10.0-1040.el7.x86_64 #1 SMP Thu Apr 18 15:22:56 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
[root@intel-skylake-loaner ~]# uptime
10:11:50 up 0 min, 1 user, load average: 0.70, 0.21, 0.07
[root@intel-skylake-loaner ~]# tuned -v
tuned 2.10.0
[root@intel-skylake-loaner ~]# systemctl status tuned
● tuned.service - Dynamic System Tuning Daemon
Loaded: loaded (/usr/lib/systemd/system/tuned.service; enabled; vendor preset: enabled)
Active: active (running) since Tue 2019-05-07 10:11:43 EDT; 17s ago
Docs: man:tuned(8)
man:tuned.conf(5)
man:tuned-adm(8)
Main PID: 4608 (tuned)
Tasks: 5
CGroup: /system.slice/tuned.service
└─4608 /usr/bin/python2 -Es /usr/sbin/tuned -l -P
May 07 10:11:41 intel-skylake-loaner.virt.lab.eng.bos.redhat.com systemd[1]: Starting Dynamic System Tuning Daemon...
May 07 10:11:43 intel-skylake-loaner.virt.lab.eng.bos.redhat.com systemd[1]: Started Dynamic System Tuning Daemon.
[root@intel-skylake-loaner ~]# tuned-adm active
Current active profile: balanced
[root@intel-skylake-loaner ~]# cat /sys/devices/system/cpu/online
0-35
[root@intel-skylake-loaner ~]# cat /etc/tuned/realtime-virtual-host-variables.conf
# Examples:
# isolated_cores=2,4-7
# isolated_cores=2-23
isolated_cores=19-35
[root@intel-skylake-loaner ~]# tuned-adm profile realtime-virtual-host
Cannot load profile(s) 'realtime-virtual-host': Assertion 'isolated_cores contains online CPU(s)' failed.
[root@intel-skylake-loaner ~]#
Jaroslav, As mentioned by Nitesh in the previous comment, this issue affects 7.6.z. Since CPU isolation is necessary for KVM-RT to work properly and since we have customers running 7.6.z on the field on Skylake, I think it's just a matter of time they hit this issue which is a blocker for us. Hi, I'm working on this one, give me a second. Btw, I don't think it's a regression... No problem with the z-stream. Created attachment 1565282 [details]
patch
Can you check if it works with the attached patch applied to /usr/lib/python2.7/site-packages/tuned/profiles/functions/function_cpulist_online.py ?
Yes, it worked. Thanks. Meged upstream PR: https://github.com/redhat-performance/tuned/pull/183 *** Bug 1643944 has been marked as a duplicate of this bug. *** 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/RHBA-2019:2201 |