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From: "Rong, Leyi" <leyi.rong@intel.com>
To: David Marchand <david.marchand@redhat.com>
Cc: "Zhang, Qi Z" <qi.z.zhang@intel.com>, dev <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH] examples/l3fwd: enable multiple Tx queues on a lcore
Date: Wed, 4 Nov 2020 08:34:14 +0000	[thread overview]
Message-ID: <SN6PR11MB26214DCC6A9B963A30BB1216ECEF0@SN6PR11MB2621.namprd11.prod.outlook.com> (raw)
In-Reply-To: <CAJFAV8yyunevvoXuFbTLW9VkjdrAqmwSRZO6NdHa8kx0s4zsqg@mail.gmail.com>

> -----Original Message-----
> From: David Marchand <david.marchand@redhat.com>
> Sent: Wednesday, November 4, 2020 4:14 PM
> To: Rong, Leyi <leyi.rong@intel.com>
> Cc: Zhang, Qi Z <qi.z.zhang@intel.com>; dev <dev@dpdk.org>
> Subject: Re: [PATCH] examples/l3fwd: enable multiple Tx queues on a lcore
> If I count well, this is the v3 of the patch.
> Please version your patches.

The previous versions are set to superseded. As nothing changes with content
on those versions, can start from this version?

> On Wed, Nov 4, 2020 at 8:52 AM Leyi Rong <leyi.rong@intel.com> wrote:
> >
> > Currently, l3fwd doesn't support multiple Tx queues, while multiple Rx
> > queues is supported.
> > To improve the throughput performance when polling multiple queues,
> > this patch enables multiple Tx queues handling on a lcore.
> Why would there be a gain in using multiple txq?
> Is it with hw txq? sw txq? .. ?
> --
> David Marchand

As there always has thoughput limit for per queue, on some performance test case by using l3fwd,
the result will limited by the per queue thoughput limit. With multiple Tx queue enabled, the per
queue thoughput limit can be eliminated if the CPU core is not the bottleneck.


  reply	other threads:[~2020-11-04  8:34 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-04  7:28 Leyi Rong
2020-11-04  8:14 ` David Marchand
2020-11-04  8:34   ` Rong, Leyi [this message]
2020-11-04  8:43     ` David Marchand
2020-11-04  9:04       ` Rong, Leyi
2020-11-05  7:14         ` Jerin Jacob
2020-11-05  9:24           ` Rong, Leyi
2021-03-24 17:23             ` Thomas Monjalon
2021-03-25  5:38               ` Rong, Leyi
2021-03-25  8:10                 ` Thomas Monjalon
  -- strict thread matches above, loose matches on Subject: below --
2020-11-02  8:12 Leyi Rong
2020-11-02  8:44 ` David Marchand
2020-11-02  5:29 Leyi Rong

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