It sounds like you don't have a very firm grasp on what's going on,
under the covers. If you need persistence, have you tried pulling the
power cord from your server and verifying you haven't lost messages? If
you don't care, why do you need persistence? :)
I suspect that what might be happening is that your writes are going
very fast because they're going into a write buffer somewhere along the
line. Your reads are not going so fast, because what you're trying to
read has left the buffer and now has to come off disk, and your disk
isn't very fast.
zaoliu wrote:
I have no idea about the IO systems. The server is using Linux Operating
System and has 6 cpus. I find that the speed is getting lower and lower
with time. When produce 500000 messages, the speed is 3500/s. But when
consumer 700000 messages, the speed get down to avg 1700/s. I think I need
to run the test for longer time to get a fair result. When consuming the
messages from the server, the speed is getting down much faster. Is 50 msg/s
in normal condition?
Ben Chobot wrote:
What is the underlying I/O system like for your broker? As I understand
the persistence layer for ActiveMQ, 3,500 durable messages a second
sounds too good to be true, assuming you're writing them safely.
