log when the waiting for the process to stop to help debug when other tasks...

log when the waiting for the process to stop to help debug when other tasks execute during this wait.
expire timer clear the timer reference because it will not be reused.
close will clean up expireTimer if calling code has not already done this.

llm/server.go

@@ -902,7 +902,12 @@ func (s *llmServer) Close() error {
 		if err := s.cmd.Process.Kill(); err != nil {
 			return err
 		}
-		return s.cmd.Wait()
+
+		if err := s.cmd.Wait(); err != nil {
+			return err
+		}
+
+		slog.Debug("llama server stopped")
 	}
 
 	return nil

server/sched.go

@@ -250,6 +250,7 @@ func (s *Scheduler) processCompleted(ctx context.Context) {
 						defer runner.refMu.Unlock()
 						if runner.expireTimer != nil {
 							runner.expireTimer.Stop()
+							runner.expireTimer = nil
 						}
 						s.expiredCh <- runner
 					})
@@ -430,6 +431,10 @@ type runnerRef struct {
 
 // The refMu must already be held when calling unload
 func (runner *runnerRef) unload() {
+	if runner.expireTimer != nil {
+		runner.expireTimer.Stop()
+		runner.expireTimer = nil
+	}
 	if runner.llama != nil {
 		runner.llama.Close()
 	}