Brian Zuromski wrote:
HI,
I'm trying to scale out a openldap server deployment to serve around 100K users. I plan on having a master server and using syncrepl to create slaves that sit behind a load-balancer. Is there a good rule of thumb to abide by when creating a scenario like this? How many authentications/sec can a server typically handle? I've seen the benchmark comparisons (http://www.usenix.org/event/lisa07/htgr_files/chu.pdf) that have been posted by Howard, but it doesn't say what the system specs were that the tests were performed on? I will have pretty beefy systems to use (lots of RAM and CPU)...
The test showing ~35,000 auths/second on 100Mbit ethernet was done using a Celestica A8440 with 4 Opteron 875s. The test was network-limited, the CPUs were pretty idle. The machine had 16GB of RAM.