Changeset 687 in code

Timestamp:

Nov 15, 2021, 8:22:43 PM (4 years ago)

Author:

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Message:

cmd/soju: bump max number of opened files

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

File:

• trunk/cmd/soju/main.go (modified) (2 diffs)

trunk/cmd/soju/main.go

@@ -51 +51 @@
 }
 
+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
@@ -74 +86 @@
         if len(cfg.Listen) == 0 {
                 cfg.Listen = []string{":6697"}
+        }
+
+        if err := bumpOpenedFileLimit(); err != nil {
+                log.Printf("failed to bump max number of opened files: %v", err)
         }