I'm not entirely sure but there may be some wierdness with the mix of buffered IO and the sysread. You may try replacing your sysread call with a plain read call. I'd also do the same thing on the print STDOUT <$fh>, read from it and print until the handle is drained.

I just worked on a similar chunk of code and switching to read everywhere seemed to clear up any issues I had with it. Didn't take the time to figure out exactly why (ran across a note somewhere about issues with mixing buffered IO and sysread)

In reply to Re: ipc::open3 start process by amw1
in thread ipc::open3 start process by Murcia

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