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From: Stephen Hemminger <stephen@networkplumber.org>
To: Nirmal R <raja.nirmalraj@gmail.com>
Cc: "users@dpdk.org" <users@dpdk.org>
Subject: Re: [dpdk-users] Dpdk multi core packet acquisition.
Date: Wed, 14 Jul 2021 08:15:30 -0700	[thread overview]
Message-ID: <20210714081530.07d2cbbd@hermes.local> (raw)
In-Reply-To: <CAPk29mJ0Zt_uUtqWKi-XOp=NBTG66zxT44SMV4Frg-4Y+ReZJg@mail.gmail.com>

On Wed, 14 Jul 2021 10:32:56 +0200
Nirmal R <raja.nirmalraj@gmail.com> wrote:

> Hello All,
> 
> I need to acquire packets from a source at more than 40Gbps. I was thinking
> to use rx_burst in a function with more than one core and load it into a
> ring. My question is, will the packets received will be in order between
> the cores say core 1 receives packet 1,2,3 and core 2 receives packet 4,5,6
> or will it be in out of order(Random).  Also can we combine 2 cores to
> launch one function.
> 
> Thank you,
> 
> With Regards,
> Nirmalraj R

DPDK drivers assume a single core at a time is reading a single queue.
If you have multiple cores reading a single queue then you need to do
some form of mutual exclusion in your application.

This is in the documentation

  reply	other threads:[~2021-07-14 15:15 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-14  8:32 Nirmal R
2021-07-14 15:15 ` Stephen Hemminger [this message]
2021-07-14 16:32   ` Gábor LENCSE
2021-07-14 17:05     ` Van Haaren, Harry
     [not found]       ` <CAPk29mLgMP3EaKjLZvAkgz4aUj0U0obQ5+Y60kK7FsUPLy5WaQ@mail.gmail.com>
2021-07-15  8:07         ` Nirmal R

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