Bug 713675
| Summary: | F15 regression: perf top does not work on Intel(R) Pentium(R) 4 CPU 3.00GHz | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Uros Bizjak <ubizjak> |
| Component: | kernel | Assignee: | Kernel Maintainer List <kernel-maint> |
| Status: | CLOSED ERRATA | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 15 | CC: | dzickus, gansalmon, itamar, jonathan, kernel-maint, madhu.chinakonda |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | i686 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | kernel-2.6.41.1-1.fc15 | Doc Type: | Bug Fix |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2011-11-17 23:28:47 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: | |||
kernel-utils isn't a valid component, moving to kernel. Try disabling the nmi watchdog. (In reply to comment #2) > Try disabling the nmi watchdog. Indeed, adding nmi_watchdog=0 to kernel command line restores perf top functionality. *sigh* yes, nmi_watchdog, perf and p4 machines have a terrible history together. this should be all fixed in 3.0 btw. for now only one user of perf is allowed, either the nmi watchdog or perf itself. nmi_watchdog=0 on the command line is one workaround 'echo 0 > /proc/sys/kernel/nmi_watchdog' is another. Sorry about that. 3.0 has it fixed, which I believe is F16. Cheers, Don (In reply to comment #4) > Sorry about that. 3.0 has it fixed, which I believe is F16. Actually, F15 is running 2.6.40.6 which is just 3.0.6 rebranded. Uros, could you let us know if this is working for you now? (In reply to comment #5) > Actually, F15 is running 2.6.40.6 which is just 3.0.6 rebranded. > > Uros, could you let us know if this is working for you now? Yes, everything seems OK now on: $ uname -r 2.6.40.6-0.fc15.i686 /proc/interrupts after short "perf top": NMI: 672 384 Non-maskable interrupts ... PMI: 672 384 Performance monitoring interrupts Thanks! (In reply to comment #6) > (In reply to comment #5) > > > Actually, F15 is running 2.6.40.6 which is just 3.0.6 rebranded. > > > > Uros, could you let us know if this is working for you now? > > Yes, everything seems OK now on: Oops, I didn't notice that I still have nmi_watchdog=0 in kernel command line. Unfortunately, removing this option, "perf top" does not work. It again just sits there, and NMI count isn't increasing. PerfTop: 0 irqs/sec kernel:-nan% exact: -nan% [1000Hz cycles], (all, 2 CPUs) ------------------------------------------------------------------------------- samples pcnt DSO _______ _____ Hi Uros, Sorry I suck. The commit that fixed that was committed in 3.1 (f91298709790b9a483752ca3c967845537df). Let me see how difficult it is to backport that to 2.6.40/3.0. Cheers, Don I built a kernel with a patch in koji. https://koji.fedoraproject.org/koji/taskinfo?taskID=3440337 Can you give it a try and let me know if that fixes your problem? Cheers, Don (In reply to comment #9) > I built a kernel with a patch in koji. > > https://koji.fedoraproject.org/koji/taskinfo?taskID=3440337 > > Can you give it a try and let me know if that fixes your problem? Yes, I can confirm that "perf top" works OK with the kernel from the link above: $ uname -r 2.6.40.7-0.fc15.i686 NMI: 630 824 Non-maskable interrupts ... PMI: 630 824 Performance monitoring interrupts (I did double check that there is no extra option in kernel command line.) (In reply to comment #10) > (In reply to comment #9) > > I built a kernel with a patch in koji. > > > > https://koji.fedoraproject.org/koji/taskinfo?taskID=3440337 > > > > Can you give it a try and let me know if that fixes your problem? > > Yes, I can confirm that "perf top" works OK with the kernel from the link > above: Great! Thank you for testing. I'll include Don's patch in the next official F15 kernel build. kernel-2.6.40.7-3.fc15 has been submitted as an update for Fedora 15. https://admin.fedoraproject.org/updates/kernel-2.6.40.7-3.fc15 Package kernel-2.6.40.7-3.fc15: * should fix your issue, * was pushed to the Fedora 15 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing kernel-2.6.40.7-3.fc15' as soon as you are able to, then reboot. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2011-14978 then log in and leave karma (feedback). kernel-2.6.40.8-2.fc15 has been submitted as an update for Fedora 15. https://admin.fedoraproject.org/updates/kernel-2.6.40.8-2.fc15 kernel-2.6.40.8-4.fc15 has been submitted as an update for Fedora 15. https://admin.fedoraproject.org/updates/kernel-2.6.40.8-4.fc15 kernel-2.6.41.1-1.fc15 has been submitted as an update for Fedora 15. https://admin.fedoraproject.org/updates/kernel-2.6.41.1-1.fc15 kernel-2.6.41.1-1.fc15 has been pushed to the Fedora 15 stable repository. If problems still persist, please make note of it in this bug report. |
Description of problem: "perf top" does not work on Intel(R) Pentium(R) 4 CPU 3.00GHz. It just sits there, without any action: ---------------------------------------------------------------------------------------------- PerfTop: 0 irqs/sec kernel:-nan% exact: -nan% [1000Hz cycles], (all, 2 CPUs) ---------------------------------------------------------------------------------------------- samples pcnt DSO _______ _____ [root@localhost uros]# Version-Release number of selected component (if applicable): [root@localhost uros]# perf --version perf version 2.6.38.8-32.fc15.i686 How reproducible: >"perf top" as a root Steps to Reproduce: 1. 2. 3. Actual results: ---------------------------------------------------------------------------------------------- PerfTop: 0 irqs/sec kernel:-nan% exact: -nan% [1000Hz cycles], (all, 2 CPUs) ---------------------------------------------------------------------------------------------- samples pcnt DSO _______ _____ NMI interrupt counts are not increasing: CPU0 CPU1 0: 126 0 IO-APIC-edge timer 1: 1312 0 IO-APIC-edge i8042 7: 0 0 IO-APIC-edge parport0 8: 1 0 IO-APIC-edge rtc0 9: 0 0 IO-APIC-fasteoi acpi 14: 19444 0 IO-APIC-edge ata_piix 15: 4148 0 IO-APIC-edge ata_piix 16: 84993 600 IO-APIC-fasteoi uhci_hcd:usb2, uhci_hcd:usb5, radeon 17: 14008 260972 IO-APIC-fasteoi Intel ICH5 18: 0 0 IO-APIC-fasteoi uhci_hcd:usb4 19: 0 0 IO-APIC-fasteoi uhci_hcd:usb3 20: 11700 0 IO-APIC-fasteoi eth0 23: 2 0 IO-APIC-fasteoi ehci_hcd:usb1 NMI: 4 2 Non-maskable interrupts LOC: 222219 187651 Local timer interrupts SPU: 0 0 Spurious interrupts PMI: 4 2 Performance monitoring interrupts IWI: 0 0 IRQ work interrupts RES: 89204 101056 Rescheduling interrupts CAL: 322 464 Function call interrupts TLB: 1239 2265 TLB shootdowns TRM: 0 0 Thermal event interrupts THR: 0 0 Threshold APIC interrupts MCE: 0 0 Machine check exceptions MCP: 4 4 Machine check polls ERR: 0 MIS: 0 Expected results: Some output from the perf, it worked in F14. NMIs should increase when "perf top" is running. Additional info: more cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 15 model : 2 model name : Intel(R) Pentium(R) 4 CPU 3.00GHz stepping : 9 cpu MHz : 3000.000 cache size : 512 KB physical id : 0 siblings : 2 core id : 0 cpu cores : 1 apicid : 0 initial apicid : 0 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe pebs bts cid xtpr bogomips : 5984.01 clflush size : 64 cache_alignment : 128 address sizes : 36 bits physical, 32 bits virtual power management: processor : 1 vendor_id : GenuineIntel cpu family : 15 model : 2 model name : Intel(R) Pentium(R) 4 CPU 3.00GHz stepping : 9 cpu MHz : 3000.000 cache size : 512 KB physical id : 0 siblings : 2 core id : 0 cpu cores : 1 apicid : 1 initial apicid : 1 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe pebs bts cid xtpr bogomips : 5983.76 clflush size : 64 cache_alignment : 128 address sizes : 36 bits physical, 32 bits virtual power management: [ 0.004082] CPU: Physical Processor ID: 0 [ 0.004085] CPU: Processor Core ID: 0 [ 0.004089] mce: CPU supports 4 MCE banks [ 0.004104] CPU0: Thermal monitoring enabled (TM1) [ 0.004747] ACPI: Core revision 20110112 [ 0.009041] ftrace: allocating 22973 entries in 45 pages [ 0.010091] Enabling APIC mode: Flat. Using 1 I/O APICs [ 0.010387] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1 [ 0.020920] CPU0: Intel(R) Pentium(R) 4 CPU 3.00GHz stepping 09 [ 0.020998] Performance Events: Netburst events, Netburst P4/Xeon PMU driver. [ 0.020998] ... version: 0 [ 0.020998] ... bit width: 40 [ 0.020998] ... generic registers: 18 [ 0.020998] ... value mask: 000000ffffffffff [ 0.020998] ... max period: 0000007fffffffff [ 0.020998] ... fixed-purpose events: 0 [ 0.020998] ... event mask: 000000000003ffff [ 0.020998] NMI watchdog enabled, takes one hw-pmu counter. [ 0.020998] CPU 1 irqstacks, hard=f3ccc000 soft=f3cce000 [ 0.020998] Booting Node 0, Processors #1 Ok. [ 0.002999] Initializing CPU#1 [ 0.002999] CPU1: Thermal monitoring handled by SMI [ 0.092040] NMI watchdog enabled, takes one hw-pmu counter. [ 0.092104] Brought up 2 CPUs