IRC, freenode, #hurd, 2012-08-10

<afleck> what is the use of having a port set name that can receive from
  multiple ports?
<youpi> think of select()
<afleck> I haven't really gotten into it yet, I was just reading the Mach
  Kernel Guide and I didn't understand the difference between having a port
  set and multiple ports, since you can't choose which port receives in a
  port set.
<youpi> with multiple ports, you'd have to have as many threads to block in
<youpi> or poll in turn