We are using Amazon EC2 M1 Extra Large instances (m1.xlarge). http://aws.amazon.com/ec2/instance-types/
wunder On Apr 9, 2013, at 3:35 PM, Furkan KAMACI wrote: > Hi Walter; > > Firstly thank for your detailed reply. I know that this is not a well > detailed question but I don't have any metrics yet. If we talk about your > system, what is the average RAM size of your Solr machines? Maybe that can > help me to make a comparison. > > 2013/4/10 Walter Underwood <wun...@wunderwood.org> > >> On Apr 9, 2013, at 3:06 PM, Furkan KAMACI wrote: >> >>> Are there anybody who can help me about how to guess the approximately >>> needed RAM for 5000 query/second at a Solr machine? >> >> No. >> >> That depends on the kind of queries you have, the size and content of the >> index, the required response time, how frequently the index is updated, and >> many more factors. So anyone who can guess that is wrong. >> >> You can only find that out by running your own benchmarks with your own >> queries against your own index. >> >> In our system, we can meet our response time requirements at a rate of >> 4000 queries/minute. We have several cores, but most traffic goes to a 3M >> document index. This index is small documents, mostly titles and authors of >> books. We have no wildcard queries and less than 5% of our queries use >> fuzzy matching. We update once per day and have cache hit rates of around >> 30%. >> >> We run new benchmarks twice each year, before our busy seasons. We use the >> current index and configuration and the queries from the busiest day of the >> previous season. >> >> Our key benchmark is the 95th percentile response time, but we also >> measure median, 90th, and 99th percentile. >> >> We are currently on Solr 3.3 with some customizations. We're working on >> transitioning to Solr 4. >> >> wunder >> -- >> Walter Underwood >> wun...@wunderwood.org >> >> >> >> -- Walter Underwood wun...@wunderwood.org
