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Date: Wed, 18 Apr 2007 11:51:13 +0100
From: "James Strachan" <james.strachan@gmail.com>
To: dev@activemq.apache.org
Subject: Re: AMQCPP Openwire much slower than Stomp?
In-Reply-To: <20070418104618.GA20452@dogbert.sdsl.sun.ac.za>
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References: <20070418095106.GA20229@dogbert.sdsl.sun.ac.za>
	 <8a6feb940704180325t77a0ea14m3a62cc7f648e1780@mail.gmail.com>
	 <20070418104618.GA20452@dogbert.sdsl.sun.ac.za>

I wonder if its the effect of TCP-NO DELAY (Nagler) kicking in. i.e.
the small messages of OpenWire may take a while to be flushed to the
socket until the buffer fills or timeouts kick in.

On 4/18/07, Albert Strasheim <13640887@sun.ac.za> wrote:
> Hello all
>
> On Wed, 18 Apr 2007, Nathan Mittler wrote:
>
> > Unfortunately we didn't do a performance analysis, as we've been focused on
> > just getting 2.0 out the door.  We did however notice a bit of slowness in
> > our integration tests.  Have you, by any chance, profiled the openwire
> > connector to see where it's spending its time?
> >
> > With any luck, we can zero in on the bottlenecks quickly and cut a 2.1.
>
> I'm going to spend some time on this over the next few days. The
> symptoms are quite strange. Factors that seem to influence the speed
> include:
>
> - whether connection is to a local broker or a remote broker
> - whether the broker is running on Windows or Linux
> - message size possibly in combination with wire format
>
> I'll report back if I figure out anything more useful.
>
> Regards,
>
> Albert
>


-- 

James
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