Hi,
I have a web-search benchmark setup with 4 machines 1 client, 1
front-end, 1 search server and 1 segment server for fetching the
summaries.
All machines are two-socket Xeon E5620 @2.4Ghz, 32GB RAM and they are
connected with 1Gb Ethernet. My crawled data is 400 MB index and 4GB
segments.
My problem is that the servers' cpu utilization is very low. The max
throughput I managed to get using the faban client or apache benchmark
was ~400-450 queries/sec with user cpu utlizations: frontend ~5%, search
server ~ 10%, segment server ~35-39%.
I'm sure that the network is not the bottleneck cause I'm not even
close to fill the bandwidth.
Can you give any suggestions on how to utilize well the servers or any
thoughts on what can be the problem?
Thanks Zacharias Hadjilambrou
