Subject: Re: weird problem

From: Paweł Staszewski <[email-masked]>
Date: Tue, 30 Jun 2009 10:36:27 +0200

sorry i forgot to attach file

Paweł Staszewski pisze:
> Jarek Poplawski pisze:
>> On 26-06-2009 19:45, Pawe. Staszewski wrote:
>>  
>>> Eric Dumazet pisze:
>>>     
>> ...
>>  
>>>> Pawel made some reports errors in fib thread, so I am not sure he 
>>>> really
>>>>  tried 2.6.30 and had same oprofile results.
>>>>
>>>> rt_worker_func() taking 13% of cpu0 is an alarm for me :)
>>>> And 21% of cpu0 and 34% of cpu6 taken by oprofiled seems odd too...
>>>>
>>>> Pawel, could you give us :
>>>>
>>>> grep . /proc/sys/net/ipv4/route/*
>>>> cat /proc/interrupts
>>>>
>>>> on your various kernels (previous to 2.6.29, 2.6.29, 2.6.30, ...)
>>>>
>>>> I suspect a change in hash table size, and/or change in interrupt 
>>>> affinities...
>>>>       
>>
>> Btw., Pawel these eth0's don't look like affined or I miss something?
>>
>> Jarek P.
>> ...
>>  
>>> cat /proc/interrupts
>>>            CPU0       CPU1       CPU2       CPU3       CPU4       
>>> CPU5       CPU6       CPU7
>>>     
>> ...
>>  
>>>  29:    1139988   18351004      89662          3          0          
>>> 1          0          3   PCI-MSI-edge      eth0
>>>  30:          0          2   20221692          1          0          
>>> 3          0          0   PCI-MSI-edge      eth1
>>>     
>> ...
>>   
> Yes
> it don't look because i switch a little later after some seconds with 
> traffic on this host
>
> Cpu1 - 18351004 interrupts on eth0 (and yes here i forgot to change on 
> boot so there are some interrupts cpu0 1139988 / cpu2 89662)
> Cpu2 - 20221692 interrupts on eth1
>
>
> in attached file are new stats with more counters from /cat 
> /proc/interrupts
>
>
>
>>> second machine:
>>> Linux TM_02_C1 2.6.30 #1 SMP Thu Jun 25 21:49:58 CEST 2009 i686 
>>> Intel(R) Xeon(R) CPU 3075 @ 2.66GHz GenuineIntel GNU/Linux
>>>
>>> cat /proc/interrupts
>>>            CPU0       CPU1
>>>     
>> ...
>>  
>>>  28:      13482      11260   PCI-MSI-edge      eth2
>>>  29:          3 1326457765   PCI-MSI-edge      eth1
>>>  30: 1240943198  137973134   PCI-MSI-edge      eth0
>>>     
>>
>>
>>   
>
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>

cat /proc/interrupts
           CPU0       CPU1       CPU2       CPU3       CPU4       CPU5       CPU6       CPU7
  0:        223          0          1        145        169        197        183        171   IO-APIC-edge      timer
  1:          0          0          0          1          0          0          0          1   IO-APIC-edge      i8042
  9:          0          0          0          0          0          0          0          0   IO-APIC-fasteoi   acpi
 14:          0          0          0          0          0          0          0          0   IO-APIC-edge      ide0
 15:          0          0          0          0          0          0          0          0   IO-APIC-edge      ide1
 29:    1139988  415979141      89662          3          0          1          0          3   PCI-MSI-edge      eth0
 30:          0          2  397435013          1          0          3          0          0   PCI-MSI-edge      eth1
 31:          0          1          1          0          0          0          0          0   PCI-MSI-edge
 32:          0          0          0          0          0          0          2          0   PCI-MSI-edge
 33:          1          1          0          0          0          0          0          0   PCI-MSI-edge
 34:          0          0          0          1          0          1          0          0   PCI-MSI-edge
 35:          0          0          0          1          0          0          0          1   PCI-MSI-edge
 36:          0          0          0          0          1          0          0          1   PCI-MSI-edge
 37:          1          0          0          0          0          1          0          0   PCI-MSI-edge
 38:          0          0          1          0          1          0          0          0   PCI-MSI-edge
 39:          0          0          2          0          0          0          0          0   PCI-MSI-edge
 40:          0          0          0          0          0          0          2          0   PCI-MSI-edge
 41:          0          2          0          0          0          0          0          0   PCI-MSI-edge
 42:          0          0          0          0          0          2          0          0   PCI-MSI-edge
 43:          0          0          0          2          0          0          0          0   PCI-MSI-edge
 44:          0          0          0          0          0          0          0          2   PCI-MSI-edge
 45:          2          0          0          0          0          0          0          0   PCI-MSI-edge
 46:          0          0          0          0          2          0          0          0   PCI-MSI-edge
 48:      27752      16448      16392      27774      27930      27840      27924      27682   PCI-MSI-edge      ahci
 49:          0          1          1          0          0          2          1          0   PCI-MSI-edge      ioat-msi
NMI:     782553   42565381   41948876     237091     359662     364201     202206     225406   Non-maskable interrupts
LOC:    5930454  449441826  428536599    2360476    2083086    2115135    2415493    2116945   Local timer interrupts
RES:       1714       1382       1944        904        810        720       1051        907   Rescheduling interrupts
CAL:         32         98        100        100        103         98        100         97   Function call interrupts
TLB:       1559       2476      19393      18806       1510       1870      21071      22096   TLB shootdowns
SPU:          0          0          0          0          0          0          0          0   Spurious interrupts
ERR:          0
MIS:          0