Bug 1267284
| Summary: | tuned-profiles-nfv: find-lapictscdeadline-optimal.sh is failing | ||||||
|---|---|---|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Luiz Capitulino <lcapitulino> | ||||
| Component: | tuned | Assignee: | Jaroslav Škarvada <jskarvad> | ||||
| Status: | CLOSED ERRATA | QA Contact: | Tereza Cerna <tcerna> | ||||
| Severity: | unspecified | Docs Contact: | |||||
| Priority: | high | ||||||
| Version: | 7.3 | CC: | bhu, hhuang, jeder, jscotka, jskarvad, lcapitulino, lmiksik, mtosatti, riehecky, tcerna, tlavigne | ||||
| Target Milestone: | rc | Keywords: | ZStream | ||||
| Target Release: | --- | ||||||
| Hardware: | Unspecified | ||||||
| OS: | Unspecified | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | tuned-2.5.1-5.el7 | Doc Type: | Bug Fix | ||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | |||||||
| : | 1282592 (view as bug list) | Environment: | |||||
| Last Closed: | 2016-11-04 07:25:35 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: | 1240765, 1273048, 1282592 | ||||||
| Attachments: |
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Upstream commit: https://git.fedorahosted.org/cgit/tuned.git/commit/?id=874762b4c06e3bc7862e119ee12a23a16352f649 Also I am going to move: /usr/lib/tuned/realtime-virtual-host/lapic_timer_adv_ns /usr/lib/tuned/realtime-virtual-host/lapic_timer_adv_ns.cpumodel to /var/lib/tuned/... This is according to FHS and should also help with SELinux (if enabled). (In reply to Jaroslav Škarvada from comment #1) > Upstream commit: > https://git.fedorahosted.org/cgit/tuned.git/commit/ > ?id=874762b4c06e3bc7862e119ee12a23a16352f649 > Using this commit as the fix for this bugzilla. > Also I am going to move: > /usr/lib/tuned/realtime-virtual-host/lapic_timer_adv_ns > /usr/lib/tuned/realtime-virtual-host/lapic_timer_adv_ns.cpumodel > > to /var/lib/tuned/... > > This is according to FHS and should also help with SELinux (if enabled). > Postponing this specific change to later 7.3 rebase. Hi, I'm confused from this bug and I don't know what is really expected result. What everything should be set and work? What all should I do for testing this bug? # tuned-adm profile realtime-virtual-host # ./find-lapictscdeadline-optimal.sh lat.out ./find-lapictscdeadline-optimal.sh: line 10: *100/ 3429: syntax error: operand expected (error token is "*100/ 3429") optimal value for lapic_timer_advance_ns is: 7000 >> Optimal value seems well - 7000 - like in description. >> There is syntax error, should I create a bug? # cat /sys/module/kvm/parameters/lapic_timer_advance_ns 1000 >> Why there is 1000 and not 7000? # ls /usr/lib/tuned/realtime-virtual-host find-lapictscdeadline-optimal.sh lat.out run-tscdeadline-latency.sh script.sh tuned.conf # ls /var/lib/tuned ls: cannot access /var/lib/tuned: No such file or directory >> Files lapic_timer_adv_ns and lapic_timer_adv_ns.cpumodel are missing in /usr/lib/tuned/realtime-virtual-host and /var/lib/tuned. Where is it? Are these files necessary? # rpm -q tuned tuned-2.7.1-2.el7.noarch There is behavior on old tuned package: # tuned-adm profile realtime-virtual-host # ./find-lapictscdeadline-optimal.sh lat.out optimal value for lapic_timer_advance_ns is: 6500 # cat /sys/module/kvm/parameters/lapic_timer_advance_ns 1000 # ls /usr/lib/tuned/realtime-virtual-host/ find-lapictscdeadline-optimal.sh lat.out run-tscdeadline-latency.sh script.sh tuned.conf # ls /var/lib/tuned ls: cannot access /var/lib/tuned: No such file or directory # rpm -q tuned tuned-2.5.1-4.el7_2.3.noarch Is lat.out the one attached in this BZ? If it is, then I can't explain why it is working for you. But at the same time, this was a minor bug and I don't think it's worth it to spend time trying to figure out how an old version of tuned used to work. In this case, I'd recommend skipping verification for this one. 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-2016-2479.html |
Created attachment 1078384 [details] lat.out that reproduces the issue Description of problem: We've been seeing that in some systems the files lapic_timer_adv_ns and lapic_timer_adv_ns.cpumodel are not being created in /usr/lib/tuned/realtime-virtual-host/. I've debugged this issue down to find-lapictscdeadline-optimal.sh (silently) failing when run by tuned. I'm attaching the lat.out file that reproduces the issue: [root@virtlab401 realtime-virtual-host]# ./find-lapictscdeadline-optimal.sh /tmp/tmp.ZjZlVhDqe8/lat.out optimal not found [root@virtlab401 realtime-virtual-host]# Btw, in those systems we ended up with 7000 written to /sys/module/kvm/parameters/lapic_timer_advance_ns, just because that's the last value tried by run-tscdeadline-latency.sh. Version-Release number of selected component (if applicable): tuned-2.5.1-4.el7.noarch How reproducible: Steps to Reproduce: 1. Setup a KVM-RT host 2. The following files don't exist: * /usr/lib/tuned/realtime-virtual-host/lapic_timer_adv_ns * /usr/lib/tuned/realtime-virtual-host/lapic_timer_adv_ns.cpumodel 3. /sys/module/kvm/parameters/lapic_timer_advance_ns is 7000