Re: [PATCH] Disable TSO for non standard qdiscs

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To: Andi Kleen <andi@...>

Cc: Waskiewicz Jr, Peter P <peter.p.waskiewicz.jr@...>, Patrick McHardy <kaber@...>, Stephen Hemminger <shemminger@...>, <netdev@...>

Subject: Re: [PATCH] Disable TSO for non standard qdiscs

Date: Friday, February 1, 2008 - 2:35 am

On Thu, 2008-01-31 at 20:34 +0100, Andi Kleen wrote:

quoted text> The philosophical problem I have with this suggestion is that I expect
> that the large majority of users will be more happy with disabled TSO
> if they use non standard qdiscs and defaults that do not fit 
> the majority use case are bad.

I wouldn't be so fast to assume that all users need an exact playout
rate, as people seem to do fine with the 8Kbps playout steps in Cisco
IOS.  A nerd-knob which expresses user's preference in the
accuracy/performance trade-off would be nice.

The problem with ethtool is that it's a non-obvious nerd knob.  At
the least the ethtool documentation should be updated to indicate that 
activating TSO effects tc accuracy.

Best wishes, Glen
[a network engineer]

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Messages in current thread:

[PATCH] Disable TSO for non standard qdiscs, Andi Kleen, (Thu Jan 31, 8:46 am)

Re: [PATCH] Disable TSO for non standard qdiscs, Rick Jones, (Thu Jan 31, 2:26 pm)

Re: [PATCH] Disable TSO for non standard qdiscs, Andi Kleen, (Thu Jan 31, 3:03 pm)

Re: [PATCH] Disable TSO for non standard qdiscs, Rick Jones, (Fri Feb 1, 5:58 pm)

Re: [PATCH] Disable TSO for non standard qdiscs, Andi Kleen, (Sat Feb 2, 12:10 am)

Re: [PATCH] Disable TSO for non standard qdiscs, Rick Jones, (Thu Jan 31, 2:35 pm)

Re: [PATCH] Disable TSO for non standard qdiscs, Andi Kleen, (Thu Jan 31, 3:25 pm)

Re: [PATCH] Disable TSO for non standard qdiscs, Rick Jones, (Thu Jan 31, 3:14 pm)

Re: [PATCH] Disable TSO for non standard qdiscs, Andi Kleen, (Fri Feb 1, 12:31 am)

Re: [PATCH] Disable TSO for non standard qdiscs, Herbert Xu, (Sat Feb 2, 6:59 pm)

Re: [PATCH] Disable TSO for non standard qdiscs, Andy Furniss, (Thu Jan 31, 9:04 pm)

Re: [PATCH] Disable TSO for non standard qdiscs, Stephen Hemminger, (Thu Jan 31, 1:23 pm)

Re: [PATCH] Disable TSO for non standard qdiscs, Andi Kleen, (Thu Jan 31, 2:33 pm)

Re: [PATCH] Disable TSO for non standard qdiscs, Patrick McHardy, (Thu Jan 31, 2:01 pm)

Re: [PATCH] Disable TSO for non standard qdiscs, Andi Kleen, (Thu Jan 31, 2:37 pm)

Re: [PATCH] Disable TSO for non standard qdiscs, Stephen Hemminger, (Thu Jan 31, 2:08 pm)

Re: [PATCH] Disable TSO for non standard qdiscs, Andi Kleen, (Thu Jan 31, 2:53 pm)

Re: [PATCH] Disable TSO for non standard qdiscs, Herbert Xu, (Sat Feb 2, 6:57 pm)

Re: [PATCH] Disable TSO for non standard qdiscs, Andi Kleen, (Sun Feb 3, 5:35 am)

Re: [PATCH] Disable TSO for non standard qdiscs, Patrick McHardy, (Thu Jan 31, 2:21 pm)

Re: [PATCH] Disable TSO for non standard qdiscs, Andi Kleen, (Thu Jan 31, 3:01 pm)

RE: [PATCH] Disable TSO for non standard qdiscs, Waskiewicz Jr, Peter P, (Thu Jan 31, 2:47 pm)

Re: [PATCH] Disable TSO for non standard qdiscs, Andi Kleen, (Thu Jan 31, 3:34 pm)

Re: [PATCH] Disable TSO for non standard qdiscs, Glen Turner, (Fri Feb 1, 2:35 am)

Re: [PATCH] Disable TSO for non standard qdiscs, Andi Kleen, (Fri Feb 1, 3:46 am)

Re: [PATCH] Disable TSO for non standard qdiscs, Patrick McHardy, (Fri Feb 1, 3:25 am)

RE: [PATCH] Disable TSO for non standard qdiscs, Waskiewicz Jr, Peter P, (Fri Feb 1, 5:37 am)

Re: [PATCH] Disable TSO for non standard qdiscs, Andi Kleen, (Fri Feb 1, 10:34 am)

Re: [PATCH] Disable TSO for non standard qdiscs, Stephen Hemminger, (Fri Feb 1, 1:24 pm)

Re: [PATCH] Disable TSO for non standard qdiscs, Patrick McHardy, (Fri Feb 1, 5:56 am)

Re: [PATCH] Disable TSO for non standard qdiscs, jamal, (Fri Feb 1, 8:06 am)

Re: [PATCH] Disable TSO for non standard qdiscs, Andi Kleen, (Sat Feb 2, 1:20 am)

Re: [PATCH] Disable TSO for non standard qdiscs, Jarek Poplawski, (Fri Feb 1, 6:56 pm)

RE: [PATCH] Disable TSO for non standard qdiscs, Waskiewicz Jr, Peter P, (Fri Feb 1, 9:51 pm)

RE: [PATCH] Disable TSO for non standard qdiscs, Waskiewicz Jr, Peter P, (Fri Feb 1, 3:02 pm)

Re: [PATCH] Disable TSO for non standard qdiscs, Patrick McHardy, (Fri Feb 1, 2:46 am)

Re: [PATCH] Disable TSO for non standard qdiscs, Jarek Poplawski, (Thu Jan 31, 4:33 pm)

Re: [PATCH] Disable TSO for non standard qdiscs, Andi Kleen, (Fri Feb 1, 1:01 am)

Re: [PATCH] Disable TSO for non standard qdiscs, Jarek Poplawski, (Thu Jan 31, 7:04 pm)

Re: [PATCH] Disable TSO for non standard qdiscs, Jarek Poplawski, (Fri Feb 1, 3:42 am)

RE: [PATCH] Disable TSO for non standard qdiscs, Waskiewicz Jr, Peter P, (Fri Feb 1, 5:28 am)

Re: [PATCH] Disable TSO for non standard qdiscs, Jarek Poplawski, (Fri Feb 1, 5:47 pm)

RE: [PATCH] Disable TSO for non standard qdiscs, Waskiewicz Jr, Peter P, (Thu Jan 31, 3:39 pm)

Re: [PATCH] Disable TSO for non standard qdiscs, Arnaldo Carvalho de Melo, (Thu Jan 31, 7:10 pm)

Re: [PATCH] Disable TSO for non standard qdiscs, Andi Kleen, (Fri Feb 1, 12:36 am)

Re: [PATCH] Disable TSO for non standard qdiscs, Patrick McHardy, (Thu Jan 31, 2:48 pm)

Re: [PATCH] Disable TSO for non standard qdiscs, Patrick McHardy, (Thu Jan 31, 2:11 pm)

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