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From: David Miller <davem@davemloft.net>
To: vladislav.yasevich@hp.com
Cc: ian.mcdonald@jandi.co.nz, rick.jones2@hp.com,
	krkumar2@in.ibm.com, johnpol@2ka.mipt.ru, netdev@vger.kernel.org
Subject: Re: [RFC] New driver API to speed up small packets xmits
Date: Thu, 10 May 2007 13:32:16 -0700 (PDT)	[thread overview]
Message-ID: <20070510.133216.95506791.davem@davemloft.net> (raw)
In-Reply-To: <464370BA.3020907@hp.com>

From: Vlad Yasevich <vladislav.yasevich@hp.com>
Date: Thu, 10 May 2007 15:21:30 -0400

> The win might be biggest on a system were a lot of applications send
> a lot of small packets.  Some number will aggregate in the prio
> queue and then get shoved into a driver in one go.
>
> But...  this is all conjecture until we see the code.

Also, whatever you gain in cpu usage you'll lose in latency.

And things sending tiny frames are exactly the ones that care about
latency.

  parent reply	other threads:[~2007-05-10 20:32 UTC|newest]

Thread overview: 86+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-05-10 14:53 [RFC] New driver API to speed up small packets xmits Krishna Kumar
2007-05-10 15:08 ` Evgeniy Polyakov
2007-05-10 15:22   ` Krishna Kumar2
2007-05-10 15:48     ` Evgeniy Polyakov
2007-05-10 16:08       ` jamal
2007-05-10 17:19     ` Rick Jones
2007-05-10 18:07       ` Sridhar Samudrala
2007-05-10 19:43         ` Gagan Arneja
2007-05-10 20:11           ` jamal
2007-05-10 20:14             ` Rick Jones
2007-05-10 20:15               ` jamal
2007-05-10 20:15             ` Gagan Arneja
2007-05-10 20:21               ` jamal
2007-05-10 20:25                 ` Gagan Arneja
2007-05-11  5:22             ` Krishna Kumar2
2007-05-11 11:27               ` jamal
2007-05-10 20:37           ` David Miller
2007-05-10 20:40             ` Gagan Arneja
2007-05-10 20:57               ` David Miller
2007-05-11  6:07                 ` Krishna Kumar2
2007-05-11  5:21             ` Krishna Kumar2
2007-05-11  5:20           ` Krishna Kumar2
2007-05-11  5:35             ` Gagan Arneja
2007-05-11  5:43               ` Krishna Kumar2
2007-05-11  5:57                 ` Gagan Arneja
2007-05-11  6:06                   ` Krishna Kumar2
2007-05-11  6:29                     ` Gagan Arneja
2007-05-11  6:52                       ` Krishna Kumar2
2007-05-10 18:13       ` Vlad Yasevich
2007-05-10 18:20         ` Rick Jones
2007-05-10 18:32           ` Vlad Yasevich
2007-05-10 18:40             ` Rick Jones
2007-05-10 18:59             ` Ian McDonald
2007-05-10 19:21               ` Vlad Yasevich
2007-05-10 19:26                 ` Ian McDonald
2007-05-10 20:32                 ` David Miller [this message]
2007-05-10 20:49                   ` Rick Jones
2007-05-10 21:02                     ` David Miller
2007-05-10 21:14                       ` Gagan Arneja
2007-05-11  2:28                         ` Stephen Hemminger
2007-05-11  5:01                           ` Gagan Arneja
2007-05-11  5:04               ` Krishna Kumar2
2007-05-11  9:01                 ` Evgeniy Polyakov
2007-05-11  9:18                   ` Krishna Kumar2
2007-05-11  9:32                     ` Evgeniy Polyakov
2007-05-11  9:52                       ` Krishna Kumar2
2007-05-11  9:56                         ` Evgeniy Polyakov
2007-05-11 11:30                           ` jamal
2007-05-11 11:53                             ` Evgeniy Polyakov
2007-05-11 12:15                               ` jamal
2007-05-10 21:27       ` David Stevens
2007-05-10 21:40         ` David Miller
2007-05-10 21:50           ` Gagan Arneja
2007-05-10 22:06             ` David Miller
2007-05-11  9:46               ` Krishna Kumar2
2007-05-10 21:41         ` Eric Dumazet
2007-05-10 22:09           ` Rick Jones
2007-05-10 21:45         ` Rick Jones
2007-05-10 21:53           ` David Stevens
2007-05-10 20:21 ` Roland Dreier
2007-05-11  7:30   ` Krishna Kumar2
2007-05-11 11:21     ` Roland Dreier
2007-05-11  9:05 ` Andi Kleen
2007-05-11  8:32   ` Krishna Kumar2
2007-05-11  9:37     ` Andi Kleen
2007-05-11  8:50       ` Krishna Kumar2
2007-05-11 11:16       ` Roland Dreier
2007-05-13  6:00         ` Andi Kleen
2007-05-15 16:25           ` Roland Dreier
2007-05-15 20:18             ` David Miller
2007-05-15 20:52               ` Roland Dreier
2007-05-15 21:48                 ` Michael Chan
2007-05-15 21:08                   ` Roland Dreier
2007-05-15 22:05                     ` Michael Chan
2007-05-15 21:28                       ` David Miller
2007-05-18  7:04                         ` Michael Chan
  -- strict thread matches above, loose matches on Subject: below --
2007-05-11  7:14 Krishna Kumar2
     [not found] <OF0CAD6D87.DBE62968-ON872572DC.0073646A-882572DC.0073BEC2@us.ibm.com>
2007-05-15 21:17 ` Roland Dreier
     [not found]   ` <OFF5654BB8.74EC8DCB-ON872572DC.00752079-882572DC.00756B23@us.ibm.com>
2007-05-15 21:25     ` Roland Dreier
     [not found]       ` <OF21D475A2.5E5C88DE-ON872572DC.00763DE4-882572DC.00768A7E@us.ibm.com>
2007-05-15 21:38         ` David Miller
2007-05-15 21:32     ` David Miller
     [not found]       ` <OF6757F56D.EE5984FD-ON872572DC.0081026C-882572DC.00814B8F@us.ibm.com>
2007-05-15 23:36         ` David Miller
2007-05-21  7:56       ` Herbert Xu
     [not found]         ` <OF9ABCD08D.2CD1B193-ON872572E3.007A6FC1-882572E3.007ACE1A@us.ibm.com>
2007-05-22 22:36           ` David Miller
     [not found]             ` <OFCF3EB7F8.9740C0C7-ON872572E3.007DADF6-882572E3.007E0E7B@us.ibm.com>
2007-05-22 23:04               ` David Miller
2007-05-22 23:12             ` Herbert Xu

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