mirror of
https://github.com/yunionio/cloudpods.git
synced 2026-07-02 17:14:29 +08:00
84cdeff92b
* fix: update vendor for clickhouse v2 * fix: fix go vet * fix: unreachable codes * fix: composite literal uses unkeyed fields * fix: ignore bad syntax for struct tag value * fix: use make test to do test ci job * fix: specify circleci resource_class Co-authored-by: Qiu Jian <qiujian@yunionyun.com>
1.6 KiB
1.6 KiB
numcpus
Package numcpus provides information about the number of CPUs in the system.
It gets the number of CPUs (online, offline, present, possible, configured or kernel maximum) on Linux, Darwin, FreeBSD, NetBSD, OpenBSD, DragonflyBSD or Solaris/Illumos systems.
On Linux, the information is retrieved by reading the corresponding CPU
topology files in /sys/devices/system/cpu.
On BSD systems, the information is retrieved using the hw.ncpu and
hw.ncpuonline sysctls, if supported.
Not all functions are supported on Darwin, FreeBSD, NetBSD, OpenBSD, DragonflyBSD and Solaris/Illumos. ErrNotSupported is returned in case a function is not supported on a particular platform.
Usage
package main
import (
"fmt"
"os"
"github.com/tklauser/numcpus"
)
func main() {
online, err := numcpus.GetOnline()
if err != nil {
fmt.Fprintf(os.Stderr, "GetOnline: %v\n", err)
}
fmt.Printf("online CPUs: %v\n", online)
possible, err := numcpus.GetPossible()
if err != nil {
fmt.Fprintf(os.Stderr, "GetPossible: %v\n", err)
}
fmt.Printf("possible CPUs: %v\n", possible)
}