[zeromq-dev] pub/sub performance help

ZOUNG KALACK Jimy (EXT) jimy.zoung-kalack-ext at sgcib.com
Mon Aug 29 14:05:28 CEST 2011


Thanks Pieter I will check again.
My technique is simple.
Publisher and subscriber are on the same box.
The publisher sends 10.000 messages.
The message sent is just the timestamp in the format (yyyy/mm/dd HH:mm:ss.fffff)
For each message the subscriber receives, the latency is calculated.
 Ln = In-On

Jimy
-----Original Message-----
From: zeromq-dev-bounces at lists.zeromq.org [mailto:zeromq-dev-bounces at lists.zeromq.org] On Behalf Of Pieter Hintjens
Sent: Monday,August 29,2011 1:19 PM
To: ZeroMQ development list
Subject: Re: [zeromq-dev] pub/sub performance help

On Mon, Aug 29, 2011 at 1:00 PM, ZOUNG KALACK Jimy (EXT)
<jimy.zoung-kalack-ext at sgcib.com> wrote:

>>What does the X axis represent, is that message size?
>        The X axis represents messages (not the size) the first msg to the last msg received.

IMO it's an artifact of the way you're measuring latency. Normally we
measure individual messages. You're measuring batches, it seems. The
actual latency per message should be constant depending on the message
size.

In other words you've got an error in your measurement technique.

-Pieter
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