MSMQ write taking > 1 minute

We have an ongoing problem with message writes to MSMQ being very slow. Our queue is on Win开发者_JAVA技巧dows Server 2008 SP2. The queue is a public queue, addressed at "servername\queuename".

The code to send a message to the queue is

MessageQueue queue = new MessageQueue(Settings.Default.DefaultDestinationQueue);
queue.Formatter = new BinaryMessageFormatter();

queue.Send(message);

The message that we're trying to send is simply a "PublishMessage", as follows:

[Serializable]
public class PublishMessage {
    public int EntryId {get; set; }
}

We're seeing the messages actually reach the queue, but logging before and after shows that it's generally taking in excess of 1 minute for each message.

At this time, we can't see anything wrong with our queue configuration, but are not queuing experts--this is the first addition to this application. Anyone have any ideas?

Edit: Our server is running SP 2 (not SP1 that I originally stated). Running an instance directly on the machine hosting the queue is fast, any other is not.

Note: Crossposted this at https://serverfault.com/questions/272242/msmq-write-taking-1-minute

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Our problem turned out to be an infrastructure issue with servers not properly authenticating. Our sysadmin finally got it straightened out by reconfiguring the server hosting the queue.

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Is the queue transactional or non-transactional? Try toggling this setting and see if you get the same behavior.

How much space is allocated for the queue? Try increasing the space, and/or moving its storage to a different drive (on a different physical spindle).

Are there messages in the system queues? Check the system queues for messages. Also, try purging all the messages from the system queues and re-run.