From: "Mattias Rönnblom" <hofors@lysator.liu.se>
To: "Morten Brørup" <mb@smartsharesystems.com>,
"Jasvinder Singh" <jasvinder.singh@intel.com>
Cc: dev@dpdk.org, Olivier Matz <olivier.matz@6wind.com>,
Maxime Coquelin <maxime.coquelin@redhat.com>,
Chenbo Xia <chenbo.xia@intel.com>
Subject: Re: Vector optimized IP checksum
Date: Thu, 16 Jun 2022 15:46:28 +0200 [thread overview]
Message-ID: <4f8a4f31-3c22-9cde-cb9a-96f628efbdf9@lysator.liu.se> (raw)
In-Reply-To: <98CBD80474FA8B44BF855DF32C47DC35D8712E@smartserver.smartshare.dk>
On 2022-06-16 09:07, Morten Brørup wrote:
> Hi Jasvinder,
>
> As the Packet CRC maintainer, have you considered adding vector
> optimized variants of the rte_raw_cksum() function?
>
The current implementation is vectorized by the compiler.
In my experience, hand-crafting it using SIMD intrinsics doesn't improve
the performance enough to warrant the trouble.
> It might benefit some of the software PMDs, such as tap and virtio.
>
> Med venlig hilsen / Kind regards,
>
> -Morten Brørup
>
next prev parent reply other threads:[~2022-06-16 13:46 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-16 7:07 Morten Brørup
2022-06-16 13:46 ` Mattias Rönnblom [this message]
2022-06-16 14:11 ` Morten Brørup
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