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From: Ben Greear <greearb@candelatech.com>
To: Ariane Keller <ariane.keller@tik.ee.ethz.ch>
Cc: Patrick McHardy <kaber@trash.net>,
	Stephen Hemminger <shemminger@linux-foundation.org>,
	netdev@vger.kernel.org, herbert@gondor.apana.org.au,
	Rainer Baumann <baumann@tik.ee.ethz.ch>
Subject: Re: [PATCH 0/2] netem: trace enhancement
Date: Tue, 04 Dec 2007 10:07:31 -0800	[thread overview]
Message-ID: <47559763.9050408@candelatech.com> (raw)
In-Reply-To: <47559455.1080009@ee.ethz.ch>

Ariane Keller wrote:
> I thought about that as well, but in my opinion this does not help much.
> It's the same as before: in average every 10ms a new buffer needs to 
> be filled.
But, you can fill 50 or 100 at a time, so if user-space is delayed for a 
few ms, the
kernel still has plenty of buffers to work with until user-space gets 
another chance.
I'm not worried about average thoughput of user-space to kernel, just random
short-term starvation.

Thanks,
Ben

-- 
Ben Greear <greearb@candelatech.com> 
Candela Technologies Inc  http://www.candelatech.com



  reply	other threads:[~2007-12-04 18:07 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-11-20 22:11 [PATCH 0/2] netem: trace enhancement Ariane Keller
2007-11-27 13:57 ` Ariane Keller
2007-11-29 21:45   ` Stephen Hemminger
2007-11-29 22:03     ` Patrick McHardy
2007-11-30 16:25       ` Ariane Keller
2007-12-03  7:45         ` Patrick McHardy
2007-12-03  9:12           ` Ariane Keller
2007-12-03 17:35             ` Patrick McHardy
2007-12-03 18:29               ` Ben Greear
2007-12-04 14:45                 ` Ariane Keller
2007-12-04 14:58                   ` Patrick McHardy
2007-12-05 12:57                     ` Ariane Keller
2007-12-05 13:05                       ` Patrick McHardy
2007-12-10 14:32                         ` Ariane Keller
2007-12-12 23:13                           ` Stephen Hemminger
2007-12-04 17:40                   ` Ben Greear
2007-12-04 17:54                     ` Ariane Keller
2007-12-04 18:07                       ` Ben Greear [this message]
2007-12-04 21:41                         ` Ariane Keller
2007-12-04 22:21                           ` Ben Greear
2007-12-05  6:12                             ` Ariane Keller
2007-12-23 19:54                             ` Ariane Keller
2007-12-23 19:54                             ` [PATCH 0/2] netem: trace enhancement: kernel Ariane Keller
2007-12-28 16:08                               ` Patrick McHardy
2007-12-28 21:02                                 ` Ariane Keller
2007-12-23 19:54                             ` [PATCH 0/2] netem: trace enhancement: iproute Ariane Keller

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