What are the disadvantages of goroutines compared to threads?

Disadvantages of goroutines compared to threads:

• Lack of priorities. You cannot explicitly set a priority for executing a specific goroutine.
• Debugging complexity. Debugging in a multithreaded application with many goroutines can be more challenging due to their lightweight nature and the Go scheduler. Traditional thread debugging tools may be less effective.
• Incomplete isolation. Goroutines in the same Go process share a single address space, which requires caution when working with shared data to avoid data races. Operating system threads have stronger isolation boundaries, albeit with higher overhead.
• Dependence on the Go scheduler. The Go scheduler manages goroutine execution, which can be both an advantage and a disadvantage depending on the specific scenario and the need for fine-grained control over scheduling. In some cases, where very low-level control or OS scheduler integration is required, threads may be preferable.
• FFI (Foreign Function Interface) limitations. Calls to code in other languages (e.g., C) from a goroutine can temporarily "block" the Go scheduler for the OS thread on which the goroutine runs. This can affect the performance of other goroutines.

Despite these disadvantages, the advantages of goroutines (lightweight, channels for communication, scheduler efficiency) often outweigh them in typical high-load concurrent applications.