Re: Data queue space

["M. Lazarus" <mlazarus@xxxxxxxx>]

James,

At 7/31/00 10:36 PM -0700, you wrote:
> So I could think of a data queue as a PF with
> reuse delete *yes, and if
> it's a FIFO or LIFO queue is has a hidden timestamp index to keep things
> in order?

 I would imagine that there's some type of mechanism like
that.  Maybe it's actually indexed by timestamp.

> One last concern though, and with the current
> speed of machines it may be moot, but what is the performance curve on a
> data queue?  I understand they get slower the bigger they
> get.

 I don't have any benchmarks for that (Richard J. - do you have
any?), but I would imagine that the old guidelines would be way off by
now.

> Just to change the subject a little, has
> anyone tried using message
> queues instead of data queues?  I've never used the product, but
> isn't
> the MQ product line based upon data exchange through Message
> Queues?

 There are different considerations using msgs, such as the need to
remove them yourself once they have been processed, performance overhead
(data queues are much faster), etc., but it's certainly a viable
alternative.

 -mark