private int GetThreadPoolSizeOrDefault()
{
if (customThreadPoolSize.HasValue)
{
return customThreadPoolSize.Value;
}
// In systems with many cores, use half of the cores for GrpcThreadPool
// and the other half for .NET thread pool. This heuristic definitely needs
// more work, but seems to work reasonably well for a start.
return Math.Max(MinDefaultThreadPoolSize, Environment.ProcessorCount / 2);
}