funcGOMAXPROCS(nint)int GOMAXPROCS sets the maximum number of CPUs that can be executing simultaneously and returns the previous setting. If n < 1, it does not change the current setting. 设置并发执行时使用的CPU的数目 例如,设置只使用1个核心 runtime.GOMAXPROCS(1) 设置只使用2个核心 runtime.GOM...
1. GOMAXPROCS sets the maximum number of CPUs that can be executing simultaneously and returns the previous setting. If n < 1, it does not change the current setting. 设置并发执行时使用的CPU的数目 例如,设置只使用1个核心 runtime.GOMAXPROCS(1) 1. 设置只使用2个核心 runtime.GOMAXPROCS(2) 1....
packagemainimport("fmt""runtime")funcmain(){fmt.Println("可用CPU核心数为",runtime.NumCPU())// GOMAXPROCS sets the maximum number of CPUs that can be executing// simultaneously and returns the previous setting. If n < 1, it does not// change the current setting.// The number of logical...
P决定同时执行的任务的数量,GOMAXPROCS限制系统线程执行用户层面的任务的数量。 // GOMAXPROCS sets the maximum number of CPUs that can be executing// simultaneously and returns the previous setting. If n < 1, it does not// change the current setting.// The number of logical CPUs on the local m...
fmt.Println("可用CPU核心数为",runtime.NumCPU())// GOMAXPROCS sets the maximum number of CPUs that can be executing// simultaneously and returns the previous setting. If n < 1, it does not// change the current setting.// The number of logical CPUs on the local machine can be queried ...
相信熟悉golang的都用过GOMAXPROCS,很多人都简单地理解为这个是限制进程数量,这样理解显然不仅是望文生义还有就是对进程和线程理解不够,官方解释就很准确: GOMAXPROCS sets the maximum number of CPUs that can be executing simultaneously。很清楚,就是限制cpu数,限制cpu数,本质上是什么,就是限制并行数,并行数即...
the numberofprograms, suchasbuild commandsortest binaries, that can be runinparallel. ThedefaultisGOMAXPROCS, normally the numberofCPUs available.-race enable data race detection. Supportedonlyonlinux/amd64, freebsd/amd64, darwin/amd64, darwin/arm64, windows/amd64, ...
GOMAXPROCS sets the maximum number of CPUs that can be executing simultaneously and returns the previous setting. If n < 1, it does not change the current setting. The number of logical CPUs on the local machine can be queried with NumCPU. This call will go away when the scheduler improves...
多重赋值 和作用域有关的一个例子 代码语言:txt 复制 package main import ( "errors" "fmt" ) type Teacher struct { } func (t *Teacher) ShowA() (int, error) { var err error a, err := 100, errors.New("test") return a, err ...
The number of logical CPUs on the local machine can be queried with NumCPU. This call will go away when the scheduler improves. 由于CPU 核心数和 P 是1:1的关系(M 的数量可以多于 P),我们认为设置最大可用的 CPU 核心数就是设置最大可用的 P 的数量(对于一个 go 程序来说) 调度过程 我们将分...