We can run 75 to 125 instances of tomcat on a single Linux server with 12 cores 
and 128GB RAM. It works great. CPU is around 25%, our JVMs are not throwing 
OOMEs, iowait is minimal, and network traffic is about 30Mbps. We're happy with 
the results.

Now we're upping the ante. We have a 48-core server with 1TB RAM, and we're 
planning to run 600+ tomcat instances on it simultaneously. What caveats or 
pitfalls should we watch out for? Are there any hard limits that would prevent 
this from working as expected?


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