Robert Richter wrote:
> On 26.03.09 14:47:47, Murali Vijayasundaram wrote:
>   
>> Here is the output from the syslog:
>>
>> $ dmesg | grep perfmon
>> Command line: ro root=/dev/VolGroup00/LogVol00 perfmon_debug
>> Kernel command line: ro root=/dev/VolGroup00/LogVol00 perfmon_debug
>> perfmon: debug output enabled
>> perfmon: version 2.82
>> perfmon: CPU hotplug support enabled
>> perfmon: added sampling format default
>> perfmon: sys_pfm_create_context.499: CPU0 [4205]: req=00007fffc1f53820 
>> fmt=00000
>> 0000040d107 fmt_arg=00007fffc1f537e0 size=64
>> perfmon: found family=16 IBSCTL=0x0
>> perfmon: pfm_amd64_nb_allocate.421: CPU7 [4207]: max_cpus=8
>> perfmon: NorthBridge socket-level event access control: enabled
>> perfmon: pfm_amd64_setup_eilvt.224: CPU7 [4207]: Failed to setup IBS LVT 
>> offset,
>>  IBSCTL = 0xffffffff
>>     
>
> The access to the pci northbridge device fails that sets up the
> interrupt. Please run the following:
>   

OK. Here are the results.

>  # dmesg | grep PCI:
>  PCI: Using configuration type 1 for base access
>  PCI: Using configuration type 1 for extended access
>  PCI: Using ACPI for IRQ routing

PCI: MCFG configuration 0: base d0000000 segment 0 buses 64 - 255
PCI: MCFG area at d4000000 reserved in E820
PCI: Using MMCONFIG at d0000000 - dfffffff
PCI: Using configuration type 1 for base access
PCI: Using ACPI for IRQ routing

>  # cat /proc/bus/pci/00/18.3 | wc -c
>  4096
>   

256

>  # ( perl -e 'sysseek(STDIN, 0x1cc, 0)'; hexdump -n 8 -e '2/4 "%08x " "\n"' ) 
> < /proc/bus/pci/00/18.3
>  00000100 00000000
>   

12031022 00100000

thanks,
-murali

> -Robert
>
>   
>> perfmon: Failed to initialize extended interrupts for IBS
>> perfmon: Unable to use IBS
>> perfmon: pfm_amd64_check_registers.488: CPU7 [4207]: has_ibs=0
>> perfmon: AMD64 PMU installed
>> perfmon: pfm_pmu_request_module.436: CPU0 [4205]: mod=perfmon_amd64 ret=0
>> perfmon: __pfm_create_context.180: CPU0 [4205]: alloc ctx 
>> @0xffff88041a4b8000
>> perfmon: pfm_pmu_acquire.547: CPU0 [4205]: pmu_acquired=0
>> perfmon: pfm_arch_reserve_regs.595: CPU0 [4205]: nlost=0 info_flags=0x0
>> perfmon: pfm_pmu_regdesc_init.176: CPU0 [4205]: intr_pmds=0xf cnt_pmds=0xf 
>> rw_pm
>> ds=0xf
>> perfmon: pfm_pmu_regdesc_init_all.210: CPU0 [4205]: regs_all.pmcs=0xf
>>     
>
>   


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