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cmd/soju: bump max number of opened files

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The bouncer process may be dealing with many opened FDs. The default
on Linux is 1024. To support bouncers with a lot of users, bump
RLIMIT_NOFILE to the max as advised in [1].

[1]: http://0pointer.net/blog/file-descriptor-limits.html
This commit is contained in:
Simon Ser 2021-11-15 21:22:43 +01:00
parent 179991036c
commit 4397cd7fc2
1 changed files with 16 additions and 0 deletions
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16
cmd/soju/main.go
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@ -50,6 +50,18 @@ func loadMOTD(srv *soju.Server, filename string) error {
return nil
}
func bumpOpenedFileLimit() error {
var rlimit syscall.Rlimit
if err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &rlimit); err != nil {
return fmt.Errorf("failed to get RLIMIT_NOFILE: %v", err)
}
rlimit.Cur = rlimit.Max
if err := syscall.Setrlimit(syscall.RLIMIT_NOFILE, &rlimit); err != nil {
return fmt.Errorf("failed to set RLIMIT_NOFILE: %v", err)
}
return nil
}
func main() {
var listen []string
var configPath string
@ -75,6 +87,10 @@ func main() {
cfg.Listen = []string{":6697"}
}
if err := bumpOpenedFileLimit(); err != nil {
log.Printf("failed to bump max number of opened files: %v", err)
}
db, err := soju.OpenDB(cfg.SQLDriver, cfg.SQLSource)
if err != nil {
log.Fatalf("failed to open database: %v", err)