* how to distribute irqs of ixgbevf
@ 2011-08-25 8:07 J.Hwan Kim
2011-08-25 8:21 ` Eric Dumazet
0 siblings, 1 reply; 4+ messages in thread
From: J.Hwan Kim @ 2011-08-25 8:07 UTC (permalink / raw)
To: netdev
Hi, everyone
The interrupts of my ixgbevf driver occurs only Core 0
although the user space "irqbalance" serivce is working.
How can I distribute the interrupt of RX in ixgbevf to all cores?
cat /proc/interrupts | grep "isv"
97: 8 0 0 0 0
0 0 0 PCI-MSI-edge isv0-rx-0
99: 7 0 0 0 0
0 0 0 PCI-MSI-edge isv0:lsc
103: 2059 0 0 0 0
0 0 0 PCI-MSI-edge isv2-rx-0
104: 14 0 0 0 0
0 0 0 PCI-MSI-edge isv2-tx-0
105: 1 0 0 0 0
0 0 0 PCI-MSI-edge isv2:mbx
"isv" is netdevice name of my ixgbevf.
Thanks in advance.
Best Regards,
J.Hwan Kim
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: how to distribute irqs of ixgbevf
2011-08-25 8:07 how to distribute irqs of ixgbevf J.Hwan Kim
@ 2011-08-25 8:21 ` Eric Dumazet
2011-08-25 10:00 ` J.Hwan Kim
2011-08-25 10:19 ` J.Hwan Kim
0 siblings, 2 replies; 4+ messages in thread
From: Eric Dumazet @ 2011-08-25 8:21 UTC (permalink / raw)
To: J.Hwan Kim; +Cc: netdev
Le jeudi 25 août 2011 à 17:07 +0900, J.Hwan Kim a écrit :
> Hi, everyone
>
> The interrupts of my ixgbevf driver occurs only Core 0
> although the user space "irqbalance" serivce is working.
>
> How can I distribute the interrupt of RX in ixgbevf to all cores?
>
> cat /proc/interrupts | grep "isv"
> 97: 8 0 0 0 0
> 0 0 0 PCI-MSI-edge isv0-rx-0
> 99: 7 0 0 0 0
> 0 0 0 PCI-MSI-edge isv0:lsc
> 103: 2059 0 0 0 0
> 0 0 0 PCI-MSI-edge isv2-rx-0
> 104: 14 0 0 0 0
> 0 0 0 PCI-MSI-edge isv2-tx-0
> 105: 1 0 0 0 0
> 0 0 0 PCI-MSI-edge isv2:mbx
>
> "isv" is netdevice name of my ixgbevf.
>
>
Given load is very small, irqbalance chose to send interrupts on a
single cpu.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: how to distribute irqs of ixgbevf
2011-08-25 8:21 ` Eric Dumazet
@ 2011-08-25 10:00 ` J.Hwan Kim
2011-08-25 10:19 ` J.Hwan Kim
1 sibling, 0 replies; 4+ messages in thread
From: J.Hwan Kim @ 2011-08-25 10:00 UTC (permalink / raw)
To: netdev
On 2011년 08월 25일 17:21, Eric Dumazet wrote:
> Le jeudi 25 août 2011 à 17:07 +0900, J.Hwan Kim a écrit :
>> Hi, everyone
>>
>> The interrupts of my ixgbevf driver occurs only Core 0
>> although the user space "irqbalance" serivce is working.
>>
>> How can I distribute the interrupt of RX in ixgbevf to all cores?
>>
>> cat /proc/interrupts | grep "isv"
>> 97: 8 0 0 0 0
>> 0 0 0 PCI-MSI-edge isv0-rx-0
>> 99: 7 0 0 0 0
>> 0 0 0 PCI-MSI-edge isv0:lsc
>> 103: 2059 0 0 0 0
>> 0 0 0 PCI-MSI-edge isv2-rx-0
>> 104: 14 0 0 0 0
>> 0 0 0 PCI-MSI-edge isv2-tx-0
>> 105: 1 0 0 0 0
>> 0 0 0 PCI-MSI-edge isv2:mbx
>>
>> "isv" is netdevice name of my ixgbevf.
> Given load is very small, irqbalance chose to send interrupts on a
> single cpu.
When I measure cpu load with "top", it indicates CPU load around 99%
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: how to distribute irqs of ixgbevf
2011-08-25 8:21 ` Eric Dumazet
2011-08-25 10:00 ` J.Hwan Kim
@ 2011-08-25 10:19 ` J.Hwan Kim
1 sibling, 0 replies; 4+ messages in thread
From: J.Hwan Kim @ 2011-08-25 10:19 UTC (permalink / raw)
To: netdev
On 2011년 08월 25일 17:21, Eric Dumazet wrote:
> Le jeudi 25 août 2011 à 17:07 +0900, J.Hwan Kim a écrit :
>> Hi, everyone
>>
>> The interrupts of my ixgbevf driver occurs only Core 0
>> although the user space "irqbalance" serivce is working.
>>
>> How can I distribute the interrupt of RX in ixgbevf to all cores?
>>
>> cat /proc/interrupts | grep "isv"
>> 97: 8 0 0 0 0
>> 0 0 0 PCI-MSI-edge isv0-rx-0
>> 99: 7 0 0 0 0
>> 0 0 0 PCI-MSI-edge isv0:lsc
>> 103: 2059 0 0 0 0
>> 0 0 0 PCI-MSI-edge isv2-rx-0
>> 104: 14 0 0 0 0
>> 0 0 0 PCI-MSI-edge isv2-tx-0
>> 105: 1 0 0 0 0
>> 0 0 0 PCI-MSI-edge isv2:mbx
>>
>> "isv" is netdevice name of my ixgbevf.
>>
>>
> Given load is very small, irqbalance chose to send interrupts on a
> single cpu.
This is CPU load measured by "top" and my cores are 8.
PID USER PR NI VIRT RES SHR S %CPU %MEM
TIME+ COMMAND
3 root 20 0 0 0 0 R 99
0.0 70:05.48 ksoftirqd/0
^ permalink raw reply [flat|nested] 4+ messages in thread
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2011-08-25 8:07 how to distribute irqs of ixgbevf J.Hwan Kim
2011-08-25 8:21 ` Eric Dumazet
2011-08-25 10:00 ` J.Hwan Kim
2011-08-25 10:19 ` J.Hwan Kim
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