On 02/02/2026 10:16, [email protected] wrote:
Hello,

I'm working with Tomcat 10.1.4x and java25, our application is extensively
using virtual threads. I enable them in tomcat by simply using
'useVirtualThreds: true'.

It's working perfectly, by I was wondering if parameters like maxThreads,
minSpareThreads, acceptCount, etc has any effect when working with virtual
threads.

For instance, I set maxThreads = minSpareThreads = acceptCount = 1, and
nothing seems to change (for worse).

maxThreads - no effect

minSpareThreads - no effect

In short, anything that you can set on an Executor will have no effect.

acceptCount will have an effect (if your OS pays any attention to the setting - not all do).

The setting likely to have the most impact in this area will be maxConnections. If set, once you hit maxConnections then acceptCount comes into play.

HTH,

Mark


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