How much overhead is there when creating a thread?

Question

I just reviewed some really terrible code - code that sends messages on a serial port by creating a new thread to package and assemble the message in a new thread for every

Answer 1

For comparison , take a look of OSX: Link

• Kernel data structures : Approximately 1 KB Stack space: 512 KB (secondary threads) : 8 MB (OS X main thread) , 1 MB (iOS main thread)

• Creation time: Approximately 90 microseconds

The posix thread creation also should be around this (not a far away figure) I guess.