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From: watermodem <aquamodem@ameritech.net>
To: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: No 100 HZ timer !
Date: Thu, 12 Apr 2001 00:25:58 -0500	[thread overview]
Message-ID: <3AD53C66.92B8D6BE@ameritech.net> (raw)
In-Reply-To: <E14n0J3-0004U6-00@the-village.bc.nu>

Alan Cox wrote:
> 
> > Timers more precise than 100HZ aren't probably needed - as MIN_RTO is 0.2s
> > and MIN_DELACK is 0.04s, TCP would hardly benefit from them.
> 
> There are a considerable number of people who really do need 1Khz resolution.
> Midi is one of the example cases. That doesn't mean we have to go to a 1KHz
> timer, we may want to combine a 100Hz timer with a smart switch to 1Khz

As somebody who is now debating how to measure latencies in a 
giga-bit ethernet environment with several components doing 
L3 switching in much less than 10 micro-seconds ... (hardware)
I agree that some method is need to achieve higher resolutions.  
(Sigh... I will likely need to buy something big and expensive)
{this is for a system to make use of L. Yarrow's little protocol}

  reply	other threads:[~2001-04-12  5:26 UTC|newest]

Thread overview: 118+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-04-09 15:54 No 100 HZ timer ! schwidefsky
2001-04-09 18:30 ` Jeff Dike
2001-04-09 18:19   ` Mark Salisbury
2001-04-09 20:12     ` Alan Cox
2001-04-09 20:32       ` Mark Salisbury
2001-04-09 22:31       ` Mikulas Patocka
2001-04-09 22:35         ` Alan Cox
2001-04-10 11:43           ` David Schleef
2001-04-10 12:04             ` Mikulas Patocka
2001-04-10 12:31               ` David Schleef
2001-04-10 12:34                 ` Mark Salisbury
2001-04-10 14:10                 ` Mikulas Patocka
2001-04-10 13:35                   ` root
2001-04-10 14:22                   ` Andi Kleen
2001-04-10 15:43                   ` Alan Cox
2001-04-12  5:25                     ` watermodem [this message]
2001-04-12  8:45                       ` Jamie Lokier
2001-04-10 17:15                   ` Jamie Lokier
2001-04-10 17:27                     ` Alan Cox
2001-04-10 17:35                       ` Jamie Lokier
2001-04-10 18:17                         ` Alan Cox
2001-04-10 18:24                           ` Jamie Lokier
2001-04-10 19:28                             ` george anzinger
2001-04-10 20:02                               ` mark salisbury
2001-04-10 22:08                                 ` george anzinger
2001-04-11  0:48                                   ` Mark Salisbury
2001-04-11  2:35                                     ` george anzinger
2001-04-12  0:24                                       ` Mark Salisbury
2001-04-11 16:11                                     ` Jamie Lokier
2001-04-11 16:59                                       ` george anzinger
2001-04-11 18:57                                         ` Jamie Lokier
2001-04-11 19:21                                           ` John Alvord
2001-04-12  8:41                                             ` Jamie Lokier
2001-08-01  1:08                               ` george anzinger
2001-08-11 11:57                                 ` Pavel Machek
2001-08-14 15:59                                   ` Jamie Lokier
2001-08-14 16:57                                     ` george anzinger
2001-04-10 19:50                             ` Zdenek Kabelac
2001-04-11 11:42                               ` Maciej W. Rozycki
2001-04-11 16:13                                 ` Jamie Lokier
2001-04-12  9:51                                   ` Maciej W. Rozycki
2001-04-10 19:42                       ` Zdenek Kabelac
2001-04-10 12:19             ` Mark Salisbury
2001-04-10 17:51             ` yodaiken
2001-04-11 18:43           ` Oliver Xymoron
2001-04-10 12:11       ` Mark Salisbury
2001-04-10  5:51     ` Andi Kleen
2001-04-10  9:33       ` Martin Mares
2001-04-10 10:00         ` Albert D. Cahalan
2001-04-10 12:14         ` Mark Salisbury
2001-04-11  5:55           ` Karim Yaghmour
2001-04-10 11:18       ` Alan Cox
2001-04-10 12:02         ` Andi Kleen
2001-04-10 12:12           ` Alan Cox
2001-04-10 12:27             ` Mark Salisbury
2001-04-10 12:32             ` Andi Kleen
2001-04-10 12:36               ` Alan Cox
2001-04-10 12:37                 ` Andi Kleen
2001-04-10 18:45               ` Stephen D. Williams
2001-04-10 19:59                 ` Andi Kleen
2001-04-10 12:07       ` Mark Salisbury
2001-04-10 12:45         ` Andi Kleen
2001-04-10 12:42           ` Mark Salisbury
2001-04-10 12:54             ` Andi Kleen
  -- strict thread matches above, loose matches on Subject: below --
2001-04-10  7:27 schwidefsky
2001-04-10  7:29 schwidefsky
2001-04-10 11:38 schwidefsky
2001-04-10 11:54 ` Alan Cox
2001-04-10 12:54 schwidefsky
2001-04-10 14:42 schwidefsky
2001-04-11  9:06 schwidefsky
2001-04-11 17:56 No 100 HZ timer! Bret Indrelee
2001-04-12 17:39 ` george anzinger
2001-04-12 21:19   ` Bret Indrelee
2001-04-12 22:20     ` george anzinger
2001-04-13  4:00       ` Bret Indrelee
2001-04-13  6:32         ` Ben Greear
2001-04-13  8:42           ` george anzinger
2001-04-13 10:36             ` Jamie Lokier
2001-04-13 16:07               ` george anzinger
2001-04-13 23:00                 ` Jamie Lokier
2001-04-13 12:05           ` Horst von Brand
2001-04-13 21:53             ` george anzinger
2001-04-13 23:10               ` Jamie Lokier
2001-04-16  3:02                 ` Ben Greear
2001-04-16  2:46                   ` Jamie Lokier
2001-04-16 12:36                     ` Mark Salisbury
2001-04-16 19:19                       ` george anzinger
2001-04-16 20:45                         ` Albert D. Cahalan
2001-04-16 21:29                           ` Chris Wedgwood
2001-04-16 22:25                           ` george anzinger
2001-04-16 23:57                         ` Mark Salisbury
2001-04-17  0:45                           ` george anzinger
2001-04-17 12:12                             ` Mark Salisbury
2001-04-17 12:51                         ` Mark Salisbury
2001-04-17 18:53                           ` george anzinger
2001-04-17 19:41                             ` Jamie Lokier
2001-04-23  8:05                             ` Ulrich Windl
2001-04-23 13:22                               ` Mark Salisbury
2001-04-16  2:41               ` Ben Greear
2001-04-12 12:58 No 100 HZ timer ! Mark Salisbury
2001-04-12 13:14 No 100 HZ timer! Bret Indrelee
2001-08-01 17:22 No 100 HZ timer ! george anzinger
2001-08-01 19:34 ` Chris Friesen
2001-08-01 19:49   ` Richard B. Johnson
2001-08-01 20:08     ` Mark Salisbury
2001-08-01 20:33     ` george anzinger
2001-08-01 21:20   ` george anzinger
2001-08-02  4:28     ` Rik van Riel
2001-08-02  6:03       ` george anzinger
2001-08-02 14:39         ` Oliver Xymoron
2001-08-02 16:36           ` george anzinger
2001-08-02 17:05             ` Oliver Xymoron
2001-08-02 17:46               ` george anzinger
2001-08-02 18:41                 ` Oliver Xymoron
2001-08-02 21:18                   ` george anzinger
2001-08-02 22:09                     ` Oliver Xymoron
2001-08-02 17:26             ` John Alvord

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