Re: [ntp:questions] Detecting bufferbloat via ntp?

2011-02-14 Thread Rob
Dave Täht d...@taht.net wrote: Bufferbloat is different that the TCP receive or transmit window size. Bufferbloat is unmanaged buffers in the software TXQUEUE, the hardware TX ring, and the device itself. The TCP layer of buffering is not what we are talking about with bufferbloat. TCP's

Re: [ntp:questions] Detecting bufferbloat via ntp?

2011-02-14 Thread Miroslav Lichvar
On Mon, Feb 14, 2011 at 08:44:46AM +, Rob wrote: When the users would set their TCP window to a reasonable value, the bufferbloat problem would not exist! When the TCP window is correct for the delay*bandwidth product of a TCP session, there are no packets piling up in buffers halfway, as

Re: [ntp:questions] Detecting bufferbloat via ntp?

2011-02-14 Thread Dave Täht
Rob nom...@example.com writes: Dave Täht d...@taht.net wrote: Bufferbloat is different that the TCP receive or transmit window size. Bufferbloat is unmanaged buffers in the software TXQUEUE, the hardware TX ring, and the device itself. The TCP layer of buffering is not what we are talking

Re: [ntp:questions] Detecting bufferbloat via ntp?

2011-02-14 Thread Kevin Oberman
Date: Mon, 14 Feb 2011 12:01:56 +0100 From: Miroslav Lichvar mlich...@redhat.com Sender: questions-bounces+oberman=es@lists.ntp.org On Mon, Feb 14, 2011 at 08:44:46AM +, Rob wrote: When the users would set their TCP window to a reasonable value, the bufferbloat problem would not

Re: [ntp:questions] Detecting bufferbloat via ntp?

2011-02-14 Thread Rick Jones
Kevin Oberman ober...@es.net wrote: No, you probably won't. Both theoretical and empirical information shows that overly large windows are not a good thing. This is the reason all modern network stacks have implemented dynamic window sizing. As far as I know, Linux, MacOS (I think),