Go language sort 10 million random number. Open the dual core. It took 120 seconds, I don't know how to optimize it. And then I adjusted the parameters for 34 seconds.

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I have nothing to adjust the parameters, and then a new run, the time reduced to 34 seconds, the results can be.

package mainimport ("FMT" "OS" "Runtime" "Test" "Time") var x chan []int = make (chan []int, 1 ) var Num int = 10//change to 100var wnum int = 100func Main () {FMT. Println (time. Now ()) var list1, List2 []intvar R chan []int = Do (chan []int, 1) for I: = 0; i < Wnum; i++ {Go Chan (Num, R)}for I: = 0; i < Wnum; i++ {Select {case y: = <-r:if len (list1) = = 0 {list1 = y} else {list2 = Ylist1 = Test. Merge (List1, List2)}}}fmt. Println (time. Now ()) FMT. Println (Len (list1)) File, _: = OS. OpenFile ("C.txt", OS. O_rdwr|os. O_create, 0777) file.write ([]byte (FMT. Sprint (List1)) file.close ()}func Chan (Num int, R Chan []int) {var list1, List2 []intruntime. Gomaxprocs (2) for I: = 0; i < Num; i++ {go func () {x <-test. Rand_list (10000) <span style= "font-family:arial, Helvetica, Sans-serif;" >//changed to 1000</span>} ()}for I: = 0; i < Num; i++ {Select {case y: = <-x:if len (list1) = = 0 {list1 = y} else {list2 = Ylist1 = Test. Merge (List1, List2)}}}r <-List1} 

Table of Contents: Test

Package Testimport ("Math/rand") func rand_list (num int) []int {var list []intfor I: = 0; i < Num; i++ {list = append (li St, Rand. INTN (100000))}for I: = 0; i < Num; i++ {for J: = i + 1, J < Num, J + + {if list[i] > List[j] {list[i], list[j] = list[j], List[i]}}}return list}

Package TestFunc Merge (List1, List2 []int) []int {list1_num: = Len (list1) List2_num: = Len (List2) var J int = 0var List3 []i Ntfor I, _: = Range List1 {this:if list1[i] <= list2[j] {list3 = append (List3, list1[i]) if i = = list1_num-1 {for z: = j ; Z < List2_num; z++ {list3 = append (List3, list2[z])}break}} else {if J <= list2_num-1 {list3 = append (List3, list2[j]) if j = = List2_nu m-1 {for J: = i; j < List1_num; J + + {list3 = append (List3, list1[j])}break}j++goto This}}}return List3}