Bug 1367502
Summary: | tuned realtime profiles need rcu_nocbs | ||
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Product: | Red Hat Enterprise Linux 7 | Reporter: | Marcel Kolaja <mkolaja> |
Component: | tuned | Assignee: | Jaroslav Škarvada <jskarvad> |
Status: | CLOSED ERRATA | QA Contact: | Tereza Cerna <tcerna> |
Severity: | urgent | Docs Contact: | |
Priority: | urgent | ||
Version: | 7.2 | CC: | atheurer, daolivei, hhuang, jeder, jscotka, jskarvad, juzhang, ksundara, lcapitulino, mnavrati, pezhang, sgordon, skramaja, smazziot, snagar, tcerna, thozza, xfu |
Target Milestone: | rc | Keywords: | ZStream |
Target Release: | --- | ||
Hardware: | Unspecified | ||
OS: | Unspecified | ||
Whiteboard: | |||
Fixed In Version: | tuned-2.5.1-4.el7_2.5 | Doc Type: | Bug Fix |
Doc Text: |
Previously, with the realtime-virtual-host and realtime-virtual-guest tuned profiles, the rcu_nocbs kernel parameter was missing from the /proc/cmdline file. With this update, rcu-nocbs is included as expected.
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Story Points: | --- |
Clone Of: | 1334479 | Environment: | |
Last Closed: | 2016-09-15 08:00:34 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: | 1334479 | ||
Bug Blocks: |
Description
Marcel Kolaja
2016-08-16 14:34:28 UTC
============================================= Verified in: tuned-2.5.1-4.el7_2.5.noarch tuned-profiles-nfv-2.5.1-4.el7_2.5.noarch PASS ============================================= # cat /usr/lib/tuned/realtime-virtual-host/tuned.conf | grep cmdline cmdline=isolcpus=${isolated_cores} nohz=on nohz_full=${isolated_cores} rcu_nocbs=${isolated_cores} intel_pstate=disable nosoftlockup # cat /etc/tuned/realtime-virtual-host-variables.conf isolated_cores=1 # tuned-adm profile realtime-virtual-host # reboot # cat /proc/cmdline BOOT_IMAGE=/vmlinuz-3.10.0-493.el7.x86_64 root=/dev/mapper/rhel_dell--pe--fm120--2c-root ro crashkernel=auto rd.lvm.lv=rhel_dell-pe-fm120-2c/root rd.lvm.lv=rhel_dell-pe-fm120-2c/swap console=ttyS0,115200n81 isolcpus=1 nohz=on nohz_full=1 rcu_nocbs=1 intel_pstate=disable nosoftlockup The same behavior is also for realtime-virtual-guest. ============================================= Reproduced in: tuned-2.5.1-7.el7.noarch tuned-profiles-nfv-2.5.1-7.el7.noarch FAIL ============================================= # cat /usr/lib/tuned/realtime-virtual-host/tuned.conf | grep cmdline cmdline=isolcpus=${isolated_cores} nohz=on nohz_full=${isolated_cores} intel_pstate=disable nosoftlockup # cat /etc/tuned/realtime-virtual-host-variables.conf isolated_cores=1 # tuned-adm profile realtime-virtual-host # reboot # cat /proc/cmdline # cat /proc/cmdline BOOT_IMAGE=/vmlinuz-3.10.0-493.el7.x86_64 root=/dev/mapper/rhel_dell--pe--fm120--2c-root ro crashkernel=auto rd.lvm.lv=rhel_dell-pe-fm120-2c/root rd.lvm.lv=rhel_dell-pe-fm120-2c/swap console=ttyS0,115200n81 isolcpus=1 nohz=on nohz_full=1 intel_pstate=disable nosoftlockup 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-2016-1848.html |