title: Change cgroup pid.max value?
body: <p>I am currently tracing <code>cannot fork()</code> errors on my Ubuntu Server and I was able to pinpoint it to the <code>pid.max</code> value of <code>700</code> under <code>/sys/fs/cgroup/pids/</code>.
  However, I can only able to set the values <code>/system.slice/pids.max</code> and  <code>/user.slice/pids.max</code> - not <code>pids.max</code>. Plus, these reset after reboot to the value <code>max</code> which again enforces the global <code>pids.max</code> value.</p>
  
  <p>Is it possible to simply change the it from 700 to something higher? <code>root</code> + <code>sudo</code> were of no help.</p>
  
  <p>Is there another way to override this value?</p>