While there is no limit to the number of threads, having too many threads open at the same time can negatively affect system speed. When deciding how many threads to have open at the same time, you need to consider the following factors: System resources: Each thread needs to occupy certain system resources, including memory and processor resources. If too many threads are opened at the same time.

System resources may be exhausted, resulting in overall performance degradation or even a system crash.

Network bandwidth: Each thread needs to use a certain amount of network bandwidth. When a large number of threads are open at the same time, network bandwidth can be overwhelmed, causing increased network latency, slowdowns, or even dropped connections.

Target server limit: The target server you visit may have a limit on the number of concurrent connections. If too many threads are opened at the same time, it may exceed the capacity of the server, resulting in rejected requests or limited service.