From: Simon Wright <simon@pushface.org>
Subject: Re: Stream_Element_Array
Date: Fri, 16 Sep 2011 23:18:21 +0100
Date: 2011-09-16T23:18:21+01:00 [thread overview]
Message-ID: <m2obykdtci.fsf@pushface.org> (raw)
In-Reply-To: 1ag8afgfoatci$.213fr4mlgqhr$.dlg@40tude.net
"Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> writes:
> On Fri, 16 Sep 2011 18:20:09 +0100, Simon Wright wrote:
>
>> I certainly wouldn't expect any significant performance difference
>> between UDP and TCP with no-delay. I suppose what's significant for you
>> may not be for me. But very few system engineers IME appreciate the
>> difference; and by the time you've eliminated out-of-order UDP packets
>> you may have eaten the difference anyway.
>
> Exactly, whatever overhead TCP/IP might cause, it is one to pay anyway by
> adding safety to UDP (sequence numbers, acknowledging, resending lost
> packets, reordering packets etc).
We are of one mind here, indeed someone who thought that was a good idea
should also like the design of a project I worked on where heartbeat
(keep-alive) messages were not only application-generated but also sent
on a different socket from data messages. It took a lot of effort to
persuade TPTB that TCP/IP channels are bidirectional.
On the other hand, if you have a tracker radar reporting target
positions every 2 ms (I'm making that number up) it probably won't
matter if you miss one or two reports, so as long as you take care not
to use an out-of-order report UDP might not be inappropriate.
next prev parent reply other threads:[~2011-09-16 22:18 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-14 3:13 Stream_Element_Array Alexander Korolev
2011-09-14 5:29 ` Stream_Element_Array Per Sandberg
2011-09-14 8:34 ` Stream_Element_Array Alexander Korolev
2011-09-14 8:31 ` Stream_Element_Array Simon Wright
2011-09-14 9:09 ` Stream_Element_Array Alexander Korolev
2011-09-14 9:40 ` Stream_Element_Array Dmitry A. Kazakov
2011-09-14 9:41 ` Stream_Element_Array Dmitry A. Kazakov
2011-09-14 10:18 ` Stream_Element_Array Simon Wright
2011-09-14 12:42 ` Stream_Element_Array Dmitry A. Kazakov
2011-09-14 16:20 ` Stream_Element_Array Simon Wright
2011-09-14 19:53 ` Stream_Element_Array Dmitry A. Kazakov
2011-09-14 10:53 ` Stream_Element_Array Simon Wright
2011-09-14 12:48 ` Stream_Element_Array Dmitry A. Kazakov
2011-09-14 14:48 ` Stream_Element_Array Alexander Korolev
2011-09-14 15:08 ` Stream_Element_Array Dmitry A. Kazakov
2011-09-14 17:16 ` Stream_Element_Array Alexander Korolev
2011-09-14 20:13 ` Stream_Element_Array Dmitry A. Kazakov
2011-09-14 21:29 ` Stream_Element_Array Alexander Korolev
2011-09-15 8:20 ` Stream_Element_Array Dmitry A. Kazakov
2011-09-15 18:58 ` Stream_Element_Array Alexander Korolev
2011-09-15 20:48 ` Stream_Element_Array Dmitry A. Kazakov
2011-09-16 0:20 ` Stream_Element_Array Alexander Korolev
2011-09-15 19:15 ` Stream_Element_Array Alexander Korolev
2011-09-15 20:11 ` Stream_Element_Array Simon Wright
2011-09-15 20:34 ` Stream_Element_Array Alexander Korolev
2011-09-15 21:42 ` Stream_Element_Array Simon Wright
2011-09-15 21:50 ` Stream_Element_Array Simon Wright
2011-09-16 0:01 ` Stream_Element_Array Alexander Korolev
2011-09-16 0:18 ` Stream_Element_Array Adam Beneschan
2011-09-16 7:22 ` Stream_Element_Array Dmitry A. Kazakov
2011-09-16 10:21 ` Stream_Element_Array Simon Wright
2011-09-16 12:13 ` Stream_Element_Array Dmitry A. Kazakov
2011-09-16 17:20 ` Stream_Element_Array Simon Wright
2011-09-16 19:32 ` Stream_Element_Array Dmitry A. Kazakov
2011-09-16 22:18 ` Simon Wright [this message]
2011-09-17 8:18 ` Stream_Element_Array Dmitry A. Kazakov
2011-09-19 23:22 ` Stream_Element_Array Randy Brukardt
2011-09-15 21:28 ` Stream_Element_Array Alexander Korolev
2011-09-15 2:33 ` Stream_Element_Array Alexander Korolev
2011-09-19 23:11 ` Stream_Element_Array Randy Brukardt
2011-09-14 12:19 ` Stream_Element_Array Gautier write-only
2011-09-16 11:17 ` Stream_Element_Array anon
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