netdev - Re: [PATCH] net: mvneta: fix handling of the Tx descriptor counter

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Message-Id: <20171113.235414.987480304119622711.davem@davemloft.net>
Date:   Mon, 13 Nov 2017 23:54:14 +0900 (KST)
From:   David Miller <davem@...emloft.net>
To:     simon.guinot@...uanux.org
Cc:     thomas.petazzoni@...e-electrons.com, netdev@...r.kernel.org,
        musv@....de, andreas.tobler@...udguard.ch,
        gregory.clement@...e-electrons.com,
        antoine.tenart@...e-electrons.com, mw@...ihalf.com,
        stable@...r.kernel.org
Subject: Re: [PATCH] net: mvneta: fix handling of the Tx descriptor counter

From: Simon Guinot <simon.guinot@...uanux.org>
Date: Mon, 13 Nov 2017 15:51:15 +0100

> IIUC the driver stops the queue if a threshold of 316 Tx descriptors is
> reached (default and worst value).

That's a lot of latency.