Tuning Wildfly thread pool - minimum threads

[gal.shenhav]

Hi,

We have a high volume serving system running on top of Wildfly 8.1 that can handle thousand request/sec at peak time.

The problem is that once we add a server to under the load balancer it get immediately hundreds of request/seconds and latency of each call increase dramatically and it takes Wildfly few minutes to overcome this stress load.

Two questions:

1. Is there a way to monitor Wildfly to understand where is the bottleneck ? (undertow, application server ) ?
2. Is there a way to configure spare / minimum threads to Wildfly and undertow thread pools ?

Thanks,

Gal

[jaikiran]

Gal Shenhav wrote:

Is there a way to configure spare / minimum threads to Wildfly and undertow thread pools ?

I haven't looked into the details but perhaps you might have to configure the IO subsystem's io-threads attribute wildfly/build/src/main/resources/docs/schema/wildfly-io_1_1.xsd at 8.1.0.Final · wildfly/wildfly · GitHub. I don't know if that attribute is supposed to represent the "min threads" that you seem to be after. Give it a try and see if it makes a difference.