[go-nuts] how about golang channel memory usage?

[Lynn H]

I user golang to write tcp  server recently, I'm puzzled by  memoy usage 
with channel

so I write some code for test
   
import (
    "time"
)

func main() {
    memsize := 256
    for i := 0; i < 100000; i++ {
        go func() {
            m := make(chan []byte, memsize)
            time.Sleep(30 * time.Second)
            <-m
        }()
    }
    time.Sleep(30 * time.Second)
}
 I user  RES value of 'top' command to get program memory use 
  memsize = 0,  program use 258M (memory just use to  allocate for 100000 
routines)
  memsize = 256,program use 306M, 100000 channel use 48M
  memsize = 512, program use 328M,100000 channel use 70M
  memsize = 1024,program use 379M, 100000 channel use 121M
  memsize = 2048,program use 455M, 100000 channel use 197M

so what the rules of channel size and  memory usage?

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