I believe you are correct Andreas. I had another look at the queue trace and
it is indeed running through every persisted message looking for a selector
match.
We'll have to change our approach to avoid using message selectors on
potentially large queues.
Thanks again,
Carlos.
----- Original Message -----
From: Andreas Mueller <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Tuesday, June 19, 2001 6:31 PM
Subject: [developers] Router appears to hang when it's started withlarge
persistent store
> > At a guess (although I cannot be sure without seeing the source),
> > SwiftMQ is
> > obtaining 4,000 file descriptors for each of the persistent messages at
> > start-up, but it is failing to release the descriptors in enough time.
>
> That's not true. SwiftMQ doesn't open any file. It only reads the
> directory content and reconstructs the queues by just the filenames. This
> directory scanning has been improved for 2.1.1. Now only those queues are
> scanning the backstore which have persistent messages. Prior to 2.1.1
> every queue has scanned the backstore on startup. When the problem is
> something like 'hammering the disk when a client connects' then this
> client has probably a message selector. In that case each message must be
> opened (and closed) to check the message props against the selector.
>
> --
> Andreas Mueller, IIT GmbH, Bremen/Germany, http://www.iit.de
> SwiftMQ - JMS Enterprise Messaging System, http://www.swiftmq.com
>
>
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