netdev - Re: [PATCH v4 0/10] bql: Byte Queue Limits

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Message-ID: <CAA93jw7prPymGuWdn0pgHXL81g19opm2=-T4msy-b_s2MJ9=Jw@mail.gmail.com>
Date:	Tue, 29 Nov 2011 09:37:45 +0100
From:	Dave Taht <dave.taht@...il.com>
To:	John Fastabend <john.r.fastabend@...el.com>
Cc:	Eric Dumazet <eric.dumazet@...il.com>,
	Tom Herbert <therbert@...gle.com>,
	"davem@...emloft.net" <davem@...emloft.net>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH v4 0/10] bql: Byte Queue Limits

On Tue, Nov 29, 2011 at 8:23 AM, John Fastabend
<john.r.fastabend@...el.com> wrote:
>
> I wonder if we should consider enabling TSO/GSO per queue or per traffic
> class on devices that support this. At least in devices that support
> multiple traffic classes it seems to be a common usage case to put bulk
> storage traffic (iSCSI) on a traffic class and low latency traffic on a
> separate traffic class, VoIP for example.


VOIP is a drop in the bucket.

Turning TSO off on TCP exiting the datacenter (or more specifically),
destined anywhere there is potential tx/rx bandwidth disparity
would be goooooood.


>
> John.



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Dave Täht
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