# Scalability issue - Rally benchmark on ES 7.0.1 **URL:** https://discuss.elastic.co/t/scalability-issue-rally-benchmark-on-es-7-0-1/183424 **Category:** Elasticsearch **Tags:** rally **Created:** [May 29, 2019, 9:04pm UTC](https://discuss.elastic.co/t/scalability-issue-rally-benchmark-on-es-7-0-1/183424 "2019-05-29T21:04:46Z") **Posts on this page:** 1 **Showing post:** 2
### Author: ![dliappis](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dliappis/32/56174_2.png) [@dliappis](https://discuss.elastic.co/u/dliappis) #### Post date: [May 30, 2019, 4:37pm UTC](https://discuss.elastic.co/t/scalability-issue-rally-benchmark-on-es-7-0-1/183424/2 "2019-05-30T16:37:49Z")
Hey @cks, Thanks for your interest in Rally and Elasticsearch. I took the liberty of editing your comment for readability, mostly enclosing data sections using the `` icon. A similar case has been discussed in [this discuss topics](https://discuss.elastic.co/t/es-does-not-scale-with-rally-track-http-logs/133795) and the troubleshooting workflow mentioned there would benefit you a lot, in my opinion; additionally this comment may be useful: [Elasticsearch official benchmarking results](https://discuss.elastic.co/t/elasticsearch-official-benchmarking-results/156315/2). To summarize, there seems to be a bottleneck somewhere. Have you checked if Rally or the load driving machine gets saturated with your settings (`175000` bulk\_size and `16` or more indexing clients)? I'd especially look at network utilization followed by cpu and disk. The `throttling indexing` message is interesting, do you remember in which scenario this happened? (i.e. single/2 nodes, # of indexing clients, and bulk\_size)? Also which Java version are you using? At some point it's likely you'll hit a limit using a single load driver. For example a 1Gbps link gets easily saturated with \>1 nodes. This [recipe](https://esrally.readthedocs.io/en/stable/recipes.html#distributing-the-load-test-driver) should help you setup a distributed load test driver when you hit this point. Dimitris --- _[View the full topic](https://discuss.elastic.co/t/scalability-issue-rally-benchmark-on-es-7-0-1/183424)._