* 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[parent not found: <CAPrcauMkHjNkOxGK7nn55iicJ6R7=hduOPnM+e5ut1EoL6dYBQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>]
* 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
[parent not found: <CANDrEH=CJKEKhFP0mivZMfX-3f5UHVUcbss=KWhuw=LL0Ecoxg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>]
* 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
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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
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2013-10-16 21:37 ` Sambath Kumar Balasubramanian
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