[Bugme-new] [Bug 21242] New: I guess fcntl F_SETPIPE_SZ doesn't work quite right

bugzilla-daemon at bugzilla.kernel.org bugzilla-daemon at bugzilla.kernel.org
Wed Oct 27 02:21:55 PDT 2010


https://bugzilla.kernel.org/show_bug.cgi?id=21242

           Summary: I guess fcntl F_SETPIPE_SZ doesn't work quite right
           Product: Process Management
           Version: 2.5
    Kernel Version: 2.6.36
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Preemption
        AssignedTo: rlove at rlove.org
        ReportedBy: asl.pavel at gmail.com
        Regression: No


Created an attachment (id=35182)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=35182)
screept itself

I've been trying to write script (see speed.py) that shows ammount of data
transmitted in pipe, and decided to toy with new fcntl F_SETPIPE_SZ. I've tried
to run it on 2 machines with the same result (see call_stack.txt).

cat /dev/random | python3 ./speed.py > /dev/null

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