* Multiple LCore receiving from same port/queue
@ 2013-10-16 20:32 Sambath Kumar Balasubramanian
[not found] ` <CAPrcauMkHjNkOxGK7nn55iicJ6R7=hduOPnM+e5ut1EoL6dYBQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
0 siblings, 1 reply; 4+ messages in thread
From: Sambath Kumar Balasubramanian @ 2013-10-16 20:32 UTC (permalink / raw)
To: dev-VfR2kkLFssw@public.gmane.org
Hi,
I have a test dpdk application with 2 lcores receiving packets
using rte_eth_rx_burst API. Is this a supported packet processing model.
The reason I am asking is I am running into some trouble with this model.
Thanks,
Sambath
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Multiple LCore receiving from same port/queue
[not found] ` <CAPrcauMkHjNkOxGK7nn55iicJ6R7=hduOPnM+e5ut1EoL6dYBQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
@ 2013-10-16 21:06 ` Stephen Hemminger
2013-10-16 21:12 ` Vladimir Medvedkin
1 sibling, 0 replies; 4+ messages in thread
From: Stephen Hemminger @ 2013-10-16 21:06 UTC (permalink / raw)
To: Sambath Kumar Balasubramanian; +Cc: dev-VfR2kkLFssw@public.gmane.org
On Wed, 16 Oct 2013 13:32:33 -0700
Sambath Kumar Balasubramanian <sambath.balasubramanian-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> Hi,
>
> I have a test dpdk application with 2 lcores receiving packets
> using rte_eth_rx_burst API. Is this a supported packet processing model.
> The reason I am asking is I am running into some trouble with this model.
>
> Thanks,
> Sambath
For performance reasons, receive and transmit functions are not thread safe.
You need to have one queue per lcore, or use locking.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Multiple LCore receiving from same port/queue
[not found] ` <CAPrcauMkHjNkOxGK7nn55iicJ6R7=hduOPnM+e5ut1EoL6dYBQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-10-16 21:06 ` Stephen Hemminger
@ 2013-10-16 21:12 ` Vladimir Medvedkin
[not found] ` <CANDrEH=CJKEKhFP0mivZMfX-3f5UHVUcbss=KWhuw=LL0Ecoxg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
1 sibling, 1 reply; 4+ messages in thread
From: Vladimir Medvedkin @ 2013-10-16 21:12 UTC (permalink / raw)
To: Sambath Kumar Balasubramanian; +Cc: dev-VfR2kkLFssw@public.gmane.org
Hi,
By default, you can't poll same queue on same port from different lcores.
If you need poll same queue on several lcores use locks to avoid race
conditions.
2013/10/17 Sambath Kumar Balasubramanian <sambath.balasubramanian-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> Hi,
>
> I have a test dpdk application with 2 lcores receiving packets
> using rte_eth_rx_burst API. Is this a supported packet processing model.
> The reason I am asking is I am running into some trouble with this model.
>
> Thanks,
> Sambath
>
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Multiple LCore receiving from same port/queue
[not found] ` <CANDrEH=CJKEKhFP0mivZMfX-3f5UHVUcbss=KWhuw=LL0Ecoxg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
@ 2013-10-16 21:37 ` Sambath Kumar Balasubramanian
0 siblings, 0 replies; 4+ messages in thread
From: Sambath Kumar Balasubramanian @ 2013-10-16 21:37 UTC (permalink / raw)
To: Vladimir Medvedkin; +Cc: dev-VfR2kkLFssw@public.gmane.org
Thanks Stephen and Vladimir. Appreciate the quick response.
Thanks,
Sambath
On Wed, Oct 16, 2013 at 2:12 PM, Vladimir Medvedkin <medvedkinv-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>wrote:
> Hi,
>
> By default, you can't poll same queue on same port from different lcores.
> If you need poll same queue on several lcores use locks to avoid race
> conditions.
>
>
> 2013/10/17 Sambath Kumar Balasubramanian <
> sambath.balasubramanian-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
>
>> Hi,
>>
>> I have a test dpdk application with 2 lcores receiving packets
>> using rte_eth_rx_burst API. Is this a supported packet processing model.
>> The reason I am asking is I am running into some trouble with this model.
>>
>> Thanks,
>> Sambath
>>
>
>
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2013-10-16 21:37 UTC | newest]
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2013-10-16 20:32 Multiple LCore receiving from same port/queue Sambath Kumar Balasubramanian
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2013-10-16 21:06 ` Stephen Hemminger
2013-10-16 21:12 ` Vladimir Medvedkin
[not found] ` <CANDrEH=CJKEKhFP0mivZMfX-3f5UHVUcbss=KWhuw=LL0Ecoxg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-10-16 21:37 ` Sambath Kumar Balasubramanian
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