AWS SDK for .NET Documentation
NumberOfUploadThreads Property
AmazonAmazon.S3.TransferTransferUtilityConfigNumberOfUploadThreads Did this page help you?   Yes   No    Tell us about it...
Gets or sets the number of executing threads. This property determines how many active threads will be used to upload the file. The default value is 10 threads.
Declaration Syntax
C#
public int NumberOfUploadThreads { get; set; }
Remarks
A value less than or equal to 0 will be silently ignored.

Assembly: AWSSDK (Module: AWSSDK) Version: 1.5.60.0 (1.5.60.0)