[openamq-dev] PAL examples

[Carl Bourne]

Hi,

Has there been much performance testing done with OpenAMQ with regards
to transferring large files?

Although (with heartbeat disabled) the clients are now able to send
large files without it disconnecting the clients, the performance seems
to fairly poor. i.e. about 30 mins to send a 650MB file and about 90
mins for another client to receive it. The tests done here were done
locally not even across the network. 

Whilst the files are transferring it also has a fairly serious hit on
both CPU and disk IO also.

Carl



-----Original Message-----
From: openamq-dev-bounces at lists.openamq.org
[mailto:openamq-dev-bounces at lists.openamq.org] On Behalf Of Martin
Sustrik
Sent: 30 March 2007 10:26
To: OpenAMQ development discussion
Subject: Re: [openamq-dev] PAL examples

Carl,

> If you start the sender ( send a file onto the queue ) then start the
> receiver it doesn't retrieve any files.
> 
> But if you start the receiver ( waiting for a file ) then start the
> sender the receiver gets the file.
> 
> This seems pointless as if your receiver goes down and the senders
send
> loads of files you will loss them.
> 
> Sure there must be a setting somewhere.

The problem is 'auto-delete' flag on the 
amq_client_session_queue_declare in receive_file.c

Auto-delete means that the queue (with all the messages it contains is 
destroyed when the owning application closes the connection).

If you want your queue to persist on the broker even if there is no 
receiver connected, set auto-delete to false.

Martin
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