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From: Thomas Monjalon <thomas@monjalon.net>
To: Slava Ovsiienko <viacheslavo@nvidia.com>
Cc: Ferruh Yigit <ferruh.yigit@intel.com>,
	"dev@dpdk.org" <dev@dpdk.org>,
	Raslan Darawsheh <rasland@nvidia.com>,
	Matan Azrad <matan@nvidia.com>, Ori Kam <orika@nvidia.com>,
	Alexander Kozyrev <akozyrev@nvidia.com>,
	"stable@dpdk.org" <stable@dpdk.org>,
	bluca@debian.org, kevin.traynor@redhat.com,
	Christian Ehrhardt <christian.ehrhardt@canonical.com>
Subject: Re: [dpdk-dev] [dpdk-stable] [PATCH v3 1/2] net/mlx5: optimize inline mbuf freeing
Date: Thu, 28 Jan 2021 10:34:32 +0100
Message-ID: <2182238.4QQNH6NEyb@thomas> (raw)
In-Reply-To: <DM6PR12MB3753A064D4C99C24EB4785B9DFBA9@DM6PR12MB3753.namprd12.prod.outlook.com>

28/01/2021 10:14, Slava Ovsiienko:
> From: Ferruh Yigit <ferruh.yigit@intel.com>
> > On 1/22/2021 5:12 PM, Viacheslav Ovsiienko wrote:
> > > The mlx5 PMD supports packet data inlining by pushing data to the
> > > transmit descriptor. If packet is short enough and all data are
> > > inline, the mbuf is not needed for data send anymore and can be freed.
> > >
> > > The mbuf free was performed in the most inner loop building the
> > > transmit descriptors. This patch postpones the mbuf free transaction
> > > to the tx_burst routine exit, optimizing the loop and allowing the
> > > bulk freeing for the multiple mbufs in single pool API call.
> > >
> > > Cc: stable@dpdk.org
> > >
> > 
> > Hi Slava,
> > 
> > This patch is optimization for inline mbufs, right, it is not a fix, should it be
> > backported?
> Not critical, but nice to have this small optimization in LTS.
> 
> > 
> > cc'ed LTS maintainers.
> > 
> > I am dropping the stable to for now in the next-net, can add it later based on
> > discussion result.
> 
> OK, let's consider this backporting in dedicated way, thank you.

Consensus from techboard is to reject optimizations in LTS for now.
Some acceptance guidelines will be written soon.
Not sure this one will be considered.



  reply	other threads:[~2021-01-28  9:34 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-18 17:14 [dpdk-dev] [PATCH 0/2] net/mlx5: add mbuf fast free Tx offload Viacheslav Ovsiienko
2020-12-18 17:14 ` [dpdk-dev] [PATCH 1/2] net/mlx5: optimize inline mbuf freeing Viacheslav Ovsiienko
2020-12-18 17:14 ` [dpdk-dev] [PATCH 2/2] net/mlx5: add mbuf fast free offload support Viacheslav Ovsiienko
2020-12-18 17:59   ` Thomas Monjalon
2021-01-06  8:34 ` [dpdk-dev] [PATCH v2 0/2] " Viacheslav Ovsiienko
2021-01-06  8:34   ` [dpdk-dev] [PATCH v2 1/2] net/mlx5: optimize inline mbuf freeing Viacheslav Ovsiienko
2021-01-06  8:34   ` [dpdk-dev] [PATCH v2 2/2] net/mlx5: add mbuf fast free offload support Viacheslav Ovsiienko
2021-01-22 17:12 ` [dpdk-dev] [PATCH v3 0/2] " Viacheslav Ovsiienko
2021-01-22 17:12   ` [dpdk-dev] [PATCH v3 1/2] net/mlx5: optimize inline mbuf freeing Viacheslav Ovsiienko
2021-01-27 12:44     ` [dpdk-dev] [dpdk-stable] " Ferruh Yigit
2021-01-27 12:48       ` Ferruh Yigit
2021-01-28  9:14       ` Slava Ovsiienko
2021-01-28  9:34         ` Thomas Monjalon [this message]
2021-01-22 17:12   ` [dpdk-dev] [PATCH v3 2/2] net/mlx5: add mbuf fast free offload support Viacheslav Ovsiienko
2021-01-26 10:34   ` [dpdk-dev] [PATCH v3 0/2] " Matan Azrad
2021-01-27  9:31   ` Raslan Darawsheh

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