I understand that the performance hits comes from using Recoverable messages
(rather than express, which has decent performance). Naturally, transaction
messages add a bit more overhead to this (have to wait for the DTC to
respond in addition to storing the msg on disk).

I'll try to find a previous message to this group which gave sample timings
for MSMQs.

.. found it - 20000 messages per second for express, drops to 100 per second
for transactional (for a multi threaded system - 5 per sec for single
thread).

I don't know what system he was using, but the relative performance figures
are worth knowing.

Cheers, Andy.

> -----Original Message-----
> From: Shaun Wilde [mailto:shaun_wildeHOTMAIL.COM]
> Sent: 28 February 2002 13:38
> To: DCOMDISCUSS.MICROSOFT.COM
> Subject: Transactional reads in MSMQ
>
>
> Hi all
>
> Is it possible to have transactional reads - ie if I have
> several readers on a
> queue then each message is only read once by a single reader.
>
> I have implemented a reader using MSMQ events and I suspect I
> will need to
> extend its implementation depending on the status of the
> queue (ie marked for
> transactions)
>
> Any help - tips appreciated - especially as regards
> performance - which I hear
> (maybe incorrectly) is awful once you turn transactioning on.
>
> thanks
>
> Shaun Wilde
>
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