[dns-operations] DNS Performance Test Over TCP

Jared Mauch jared at puck.nether.net
Wed May 22 18:12:19 UTC 2013

On May 22, 2013, at 11:51 AM, bert hubert <bert.hubert at netherlabs.nl> wrote:

> On Wed, May 22, 2013 at 10:16:50AM -0400, Jared Mauch wrote:
>> [without research random musing]
>> I would imagine you could just modify the source to use SOCK_STREAM
>> instead of SOCK_DGRAM unless it uses sendto or recvfrom.  It would also
> Setting up a TCP/IP connection in non-blocking fashion is very different
> from doing UDP. TCP/IP also comes with the possibility of getting partial
> writes, especially under benchmarking conditions, which requires buffering
> and keeping state.
> For this reason, none of the UDP-based tools has "just enabled" TCP/IP, we
> would've if it were straightforward.

It's not *that* hard to write a socket based application to do these types of things, esp for a lab environment where you're not seeing weird variable latency and RTT values for your TCP session.  You're just testing the two TCP stacks and the application layer interaction with them.

- Jared

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