DPDK usage discussions
 help / color / mirror / Atom feed
From: Mikael R Carlsson <Mikael.R.Carlsson@tietoevry.com>
To: "users@dpdk.org" <users@dpdk.org>
Subject: Configure timestamp source for dpdk-pdump on E810 and DPDK 19.11
Date: Fri, 6 May 2022 07:46:39 +0000
Message-ID: <DU0PR04MB92261EA274F5EC329FE4E6CBA6C59@DU0PR04MB9226.eurprd04.prod.outlook.com> (raw)

[-- Attachment #1: Type: text/plain, Size: 657 bytes --]


I am using a Intel E810-XXVDA4 and DPDK version 19.11. During troubleshooting we have captures outgoing traffic with dpdk-pdump:

dpdk-pdump -- --pdump 'port=1,queue=*,tx-dev=/tmp/tx.pcap

I have opened the pcap-file in wireshark and I can see that some packets are delayed. However, system behavior indicates that the delays I see in the pcap file are not correct, they are too big. My questions is, how is the timestamp on packets in the pcap from dpdk-pdump created, like NIC HW generated, CPU time at disk write etc. or something else? Are there any run-time or build-time options to change the source of the timestamps?

  / Mikael

[-- Attachment #2: Type: text/html, Size: 2526 bytes --]

             reply	other threads:[~2022-05-06  7:46 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-06  7:46 Mikael R Carlsson [this message]
2022-05-06 14:55 ` Stephen Hemminger
2022-05-06 15:02 ` Stephen Hemminger

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=DU0PR04MB92261EA274F5EC329FE4E6CBA6C59@DU0PR04MB9226.eurprd04.prod.outlook.com \
    --to=mikael.r.carlsson@tietoevry.com \
    --cc=users@dpdk.org \


* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

DPDK usage discussions

This inbox may be cloned and mirrored by anyone:

	git clone --mirror http://inbox.dpdk.org/users/0 users/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 users users/ http://inbox.dpdk.org/users \
	public-inbox-index users

Example config snippet for mirrors.
Newsgroup available over NNTP:

AGPL code for this site: git clone https://public-inbox.org/public-inbox.git