From: "Kovacevic, Marko" <marko.kovacevic@intel.com>
To: "Pattan, Reshma" <reshma.pattan@intel.com>,
"dev@dpdk.org" <dev@dpdk.org>,
"longtb5@viettel.com.vn" <longtb5@viettel.com.vn>,
"Mcnamara, John" <john.mcnamara@intel.com>
Cc: "Pattan, Reshma" <reshma.pattan@intel.com>
Subject: Re: [dpdk-dev] [PATCH] doc: update timestamp validity for latency measurement
Date: Wed, 14 Nov 2018 10:14:19 +0000 [thread overview]
Message-ID: <6DC05C7C5F25994B81B3F2F214251F66020502EA@IRSMSX104.ger.corp.intel.com> (raw)
In-Reply-To: <1538655839-32339-1-git-send-email-reshma.pattan@intel.com>
> Updated the doc on how packets are marked to identify their timestamp as
> valid and considered for latency measurement.
>
> Suggested-by: Bao-Long Tran <longtb5@viettel.com.vn>
> Signed-off-by: Reshma Pattan <reshma.pattan@intel.com>
>
> +Timestamp and latency calculation
> +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> +
> +The Latency stats library marks the time in the timestamp field of the
> +mbuf for the ingress packets and sets the ``PKT_RX_TIMESTAMP`` flag of
> +``ol_flags`` for the mbuf to indicate the marked time as a valid one.
> +At the egress, the mbufs with the flag set are considered having valid
> +timestamp and are used for the latency calculation.
Acked-by: Marko Kovacevic <marko.kovacevic@intel.com>
next prev parent reply other threads:[~2018-11-14 10:14 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-04 12:23 Reshma Pattan
2018-11-14 10:14 ` Kovacevic, Marko [this message]
2018-11-19 0:37 ` Thomas Monjalon
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