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helper: Reduce number of parallel builds a bit

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The go compiler is already parallelized. The high concurrency caused my
podman container to hit a resource limit.
This commit is contained in:
Michael Eischer 2022-08-20 12:10:48 +02:00
parent ed94678820
commit 7f0929e519
1 changed files with 7 additions and 2 deletions
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9
helpers/build-release-binaries/main.go
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@ -182,14 +182,19 @@ func buildForTarget(sourceDir, outputDir, goos, goarch string) (filename string)
func buildTargets(sourceDir, outputDir string, targets map[string][]string) { func buildTargets(sourceDir, outputDir string, targets map[string][]string) {
start := time.Now() start := time.Now()
msg("building with %d workers", runtime.NumCPU()) // the go compiler is already parallelized, thus reduce the concurrency a bit
workers := runtime.GOMAXPROCS(0) / 4
if workers < 1 {
workers = 1
}
msg("building with %d workers", workers)
type Job struct{ GOOS, GOARCH string } type Job struct{ GOOS, GOARCH string }
var wg errgroup.Group var wg errgroup.Group
ch := make(chan Job) ch := make(chan Job)
for i := 0; i < runtime.NumCPU(); i++ { for i := 0; i < workers; i++ {
wg.Go(func() error { wg.Go(func() error {
for job := range ch { for job := range ch {
start := time.Now() start := time.Now()