netdev - Re: [PATCH 3/6] net: thunderx: Increase transmit queue length

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Message-ID: <1449075580.6379.1.camel@edumazet-glaptop2.roam.corp.google.com>
Date:	Wed, 02 Dec 2015 08:59:40 -0800
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Sunil Kovvuri <sunil.kovvuri@...il.com>
Cc:	David Miller <davem@...emloft.net>,
	Pavel Fedin <p.fedin@...sung.com>,
	Linux Netdev List <netdev@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	LAKML <linux-arm-kernel@...ts.infradead.org>,
	Sunil Goutham <Sunil.Goutham@...iumnetworks.com>,
	Sunil Goutham <sgoutham@...ium.com>
Subject: Re: [PATCH 3/6] net: thunderx: Increase transmit queue length

On Wed, 2015-12-02 at 22:20 +0530, Sunil Kovvuri wrote:
> >
> > If the performance increase is 4 %, then surely using twice more memory
> > is not worth it.
> I haven't mentioned anywhere that i am seeing 4% increase in performance.

Yes, this is the complain I made :

No numbers, just a patch increasing ring size by a 100% factor !

I really hope you'll have very convincing numbers, especially if your
driver does not implement BQL.



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