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Re: serial flow control appears broken

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From: Alan Cox <alan@...>
To: Mark Lord <lkml@...>
Cc: Robert Hancock <hancockr@...>, Maciej W. Rozycki <macro@...>, Russell King <rmk+lkml@...>, Lee Howard <faxguy@...>, <linux-serial@...>, <tytso@...>, <linux-kernel@...>
Subject: Re: serial flow control appears broken
Date: Thursday, August 2, 2007 - 1:13 pm

> That's what "hdparm -u1" (or -u0) controls.

Only some of the time.


The worst case IDE times we've seen for executing a single indivisible
un-interruptible I/O cycle with a drive are around 1mS. Thats a hardware
limit.

Alan
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Messages in current thread:
Re: serial flow control appears broken, Robert Hancock, (Thu Jul 26, 3:20 am)
Re: serial flow control appears broken, Lee Howard, (Thu Jul 26, 12:08 pm)
Re: serial flow control appears broken, Maciej W. Rozycki, (Fri Jul 27, 7:32 am)
Re: serial flow control appears broken, Lee Howard, (Fri Jul 27, 1:11 pm)
Re: serial flow control appears broken, Maciej W. Rozycki, (Fri Jul 27, 1:53 pm)
Re: serial flow control appears broken, Lee Howard, (Sat Aug 4, 2:19 pm)
Re: serial flow control appears broken, Robert Hancock, (Fri Jul 27, 2:22 pm)
Re: serial flow control appears broken, Maciej W. Rozycki, (Mon Jul 30, 5:34 am)
Re: serial flow control appears broken, Russell King, (Sat Jul 28, 5:28 am)
Re: serial flow control appears broken, Maciej W. Rozycki, (Mon Jul 30, 5:45 am)
Re: serial flow control appears broken, Mark Lord, (Thu Aug 2, 10:57 am)
Re: serial flow control appears broken, Robert Hancock, (Thu Aug 2, 12:14 pm)
Re: serial flow control appears broken, Mark Lord, (Thu Aug 2, 12:29 pm)
Re: serial flow control appears broken, Lee Howard, (Sat Aug 4, 3:38 pm)
Re: serial flow control appears broken, Robert Hancock, (Thu Aug 2, 12:40 pm)
Re: serial flow control appears broken, Alan Cox, (Thu Aug 2, 1:13 pm)
Re: serial flow control appears broken, Alan Cox, (Thu Aug 2, 12:57 pm)
Re: serial flow control appears broken, Maciej W. Rozycki, (Fri Aug 3, 5:32 am)
Re: serial flow control appears broken, Robert Hancock, (Thu Aug 2, 1:02 pm)
Re: serial flow control appears broken, Russell King, (Mon Jul 30, 5:59 am)
Re: serial flow control appears broken, Paul Fulghum, (Fri Jul 27, 3:14 pm)
Re: serial flow control appears broken, Paul Fulghum, (Fri Jul 27, 3:05 pm)
Re: serial flow control appears broken, Maciej W. Rozycki, (Mon Jul 30, 5:39 am)
Re: serial flow control appears broken, Paul Fulghum, (Fri Jul 27, 2:46 pm)
Re: serial flow control appears broken, Lee Howard, (Fri Jul 27, 2:11 pm)
Re: serial flow control appears broken, Maciej W. Rozycki, (Mon Jul 30, 5:36 am)
Re: serial flow control appears broken, Alan Cox, (Fri Jul 27, 1:41 pm)
Re: serial flow control appears broken, Alan Cox, (Thu Jul 26, 12:31 pm)
Re: serial flow control appears broken, Lee Howard, (Fri Jul 27, 1:53 am)
Re: serial flow control appears broken, Tilman Schmidt, (Fri Jul 27, 9:45 am)
Re: serial flow control appears broken, Paul Fulghum, (Mon Aug 27, 4:38 pm)
Re: serial flow control appears broken, Lee Howard, (Fri Jul 27, 4:48 pm)
Re: serial flow control appears broken, Paul Fulghum, (Fri Jul 27, 7:28 pm)
Re: serial flow control appears broken, Lee Howard, (Sat Jul 28, 12:51 am)
Re: serial flow control appears broken, Ray Lee, (Sat Jul 28, 12:41 pm)
Re: serial flow control appears broken, Lee Howard, (Sat Aug 4, 2:21 pm)
Re: serial flow control appears broken, Paul Fulghum, (Sat Aug 4, 6:07 pm)
Re: serial flow control appears broken, Lee Howard, (Sat Aug 4, 8:00 pm)
Re: serial flow control appears broken, Paul Fulghum, (Sun Aug 5, 10:52 am)
Re: serial flow control appears broken, Alan Cox, (Sat Jul 28, 8:00 am)
Re: serial flow control appears broken, Lee Howard, (Sat Jul 28, 11:39 am)
Re: serial flow control appears broken, Russell King, (Sat Jul 28, 5:18 am)
Re: serial flow control appears broken, Lee Howard, (Fri Jul 27, 4:05 pm)