gistfile1.txt

diff --git a/circus/process.py b/circus/process.py
index 070cb10..f7cb699 100644
--- a/circus/process.py
+++ b/circus/process.py
@@ -124,7 +124,7 @@ class Process(object):
             if self.uid:
                 os.setuid(self.uid)

-        self._worker = Popen(args, cwd=self.working_dir,
+        self._worker = Popen(args, bufsize=-1, cwd=self.working_dir,
                              shell=self.shell, preexec_fn=preexec_fn,
                              env=self.env, close_fds=not self.use_fds,
                              stdout=PIPE, stderr=PIPE,