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From: Stephen Hemminger <stephen@networkplumber.org>
To: "Licj" <272465698@qq.com>
Cc: "USERS" <users@dpdk.org>
Subject: Re: [dpdk-users] Can dpdk-pdump capture high speed traffic?
Date: Tue, 30 Jun 2020 08:04:11 -0700
Message-ID: <20200630080411.72ac077c@hermes.lan> (raw)
In-Reply-To: <tencent_C3798CA2917B3642B0F80E715E1CFFA67707@qq.com>

On Tue, 30 Jun 2020 15:33:53 +0800
"Licj" <272465698@qq.com> wrote:

> I have two machines directly connected with Mellanox 56g nice.
> I am running pktgen-dpdk on one machine, and testpmd&amp;dpdk-pdump on the other machine. One is for packet sending and the other is for recving.
> The pktgen and testpmd both show 50Gbps traffic. But the pcap file only show several hundreds Mbps.

The current packet capture has multiple context switches and packet copies.
Also, it is limited by the speed of filesystem writes.

      reply index

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-30  7:33 Licj
2020-06-30 15:04 ` Stephen Hemminger [this message]

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