Bug 1282566
| Summary: | realtime profile: set unboud workqueues cpumask | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Jan Kurik <jkurik> |
| Component: | tuned | Assignee: | Jaroslav Škarvada <jskarvad> |
| Status: | CLOSED ERRATA | QA Contact: | Tereza Cerna <tcerna> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | high | ||
| Version: | 7.2 | CC: | bhu, daolivei, hhuang, jeder, jscotka, jskarvad, juzhang, lcapitulino, mnavrati, tcerna, tlavigne, xfu |
| Target Milestone: | rc | Keywords: | ZStream |
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | tuned-2.5.1-4.el7_2.1 | Doc Type: | Enhancement |
| Doc Text: |
With this update, the cpumask of unbound workqueueus is set to the list of non-isolated cores in the "tuned" realtime profiles, as Red Hat Enterprise Linux and Real Time kernels now support setting the cpumask of unbound workqueues in sysfs.
|
Story Points: | --- |
| Clone Of: | 1259043 | Environment: | |
| Last Closed: | 2015-12-08 10:40:57 UTC | Type: | --- |
| 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: | 1259043 | ||
| Bug Blocks: | |||
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Description
Jan Kurik
2015-11-16 18:31:13 UTC
===============================
Verified in:
tuned-2.5.1-4.el7_2.1.noarch
PASS
===============================
There is new row with workqueue/cpumask in configuration file of realtime profile:
$ cat /usr/lib/tuned/realtime/tuned.conf
...
[sysfs]
/sys/bus/workqueue/devices/writeback/cpumask = ${not_isolated_cpumask}
/sys/devices/virtual/workqueue/cpumask = ${not_isolated_cpumask}
/sys/devices/system/machinecheck/machinecheck*/ignore_ce = 1
...
Content of /sys/devices/virtual/workqueue/cpumask is set to new value after activating realtime:
$ tuned-adm profile balanced
$ cat /sys/devices/virtual/workqueue/cpumask
ffff,ffffffff,ffffffff
$ tuned-adm profile realtime
$ cat /sys/devices/virtual/workqueue/cpumask
0000,00000000,ffffff0b
$
===============================
Reproduced in:
tuned-2.5.1-4.el7.noarch
FAIL
===============================
$ cat /usr/lib/tuned/realtime/tuned.conf
...
[sysfs]
/sys/bus/workqueue/devices/writeback/cpumask = ${not_isolated_cpumask}
/sys/devices/system/machinecheck/machinecheck*/ignore_ce = 1
...
$ tuned-adm profile balanced
$ cat /sys/devices/virtual/workqueue/cpumask
ffff,ffffffff,ffffffff
$ tuned-adm profile realtime
$ cat /sys/devices/virtual/workqueue/cpumask
ffff,ffffffff,ffffffff
$
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://rhn.redhat.com/errata/RHBA-2015-2570.html |