On 04/07/2010 03:36 PM, Andrew Wright wrote:
On 31 Mar 2010, at 14:30, Andrew Wright wrote:
On 31 Mar 2010, at 14:02, Alan Conway wrote:
On 03/30/2010 05:38 PM, Andrew Wright wrote:
Hi all,
I've recently run some tests to try and see how much overhead
clustering
brings. In short - I saw roughly a 50% reduction in message throughput
when clients ran against a 2 node cluster vs a standalone broker.
I get about a 25% reduction running against a 4 node cluster.
Try --worker-threads=4.
<snip>
Just a quick follow-up - setting worker-threads=4 noticeably improved
throughput on a single queue in both the standalone and clustered
scenarios. It reduced total throughput somewhat when loading 8 queues
simultaneously (which you'd expect). The ratio of standalone:clustered
throughput remained at about 2:1. Will let know if we get any further
interesting results.
I know this is odd to ask, but what hardware are you running on brand.
As machines that have SMI's are known to reduce throughput in clustered
configurations. My employer has worked with some manufactures to provide
bios's for certain models for reduced SMIs to resolve this issue.
Carl.
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