I don't have a lot of experience with it, but EBS volumes have limited bandwidth. Some people have had success striping across multiple EBS volumes from within Linux instances. You could also look at the more recent guaranteed IOPs capability Amazon now offers.
Wayne Ron Hitchens <[email protected]> wrote: Has anyone had any experience configuring and running non-trivial MarkLogic clusters in the cloud? Specifically Amazon EC2 VMs? I've got a test cluster of three nodes setup in AWS and am trying to figure out the best configuration for it. The system seems to be quite slow at some things, but reasonably fast at others. Bumping the VM up to bigger instances (more ram, more cores) doesn't seem to have a significant impact on speed or throughput. I suspect I/O bandwidth may be the culprit, but that's just a hunch. Does anyone have any experience with tuning EC2 VMs? The test environment I'm working with now is three m2.xlarge instances (32gb RAM, 4 cores, "high" network speed). The OS is Windows (groan, I don't have a choice there). Production cluster(s) are likely to be similar, but probably six nodes or so. Any advice//war stories/dire warnings greatly appreciated. Thanks. --- Ron Hitchens {mailto:[email protected]} Ronsoft Technologies +44 7879 358 212 (voice) http://www.ronsoft.com +1 707 924 3878 (fax) Bit Twiddling At Its Finest "No amount of belief establishes any fact." -Unknown _______________________________________________ General mailing list [email protected] http://developer.marklogic.com/mailman/listinfo/general _______________________________________________ General mailing list [email protected] http://developer.marklogic.com/mailman/listinfo/general
