icm/min_threads is a SAP Parameter attribute which is used to control Minimum number of worker threads of ICM information. This is available within R/3 SAP systems depending on the version and release level.
Below is the standard documentation available and a few details of the attributes values .
This parameter specifies the minimum number of threads in the ICM. This
number is the same as the number of simultaneously running connections
that can be processed. The value for the minimum number of threads is
created at ICM startup and also applies during runtime. If the network
load for the ICM/Web Dispatcher becomes too much, it automatically
starts more threads, up until the set limit set by
See SAP Parameter Documentation for full SAP documentation for this profile parameter.