The profiling information produced by "java -prof ..." is
rendered near useless by the absence of lots of function calls.

We have a network client, which does lots of reads and writes
to the network using the standard TCP Socket in java.net.

However, none of these reads or writes appear in the profile
output. I suspect this is not anything specific to the java.net
Socket class, but a much wider problem.

The absence of these calls makes it impossible to use or trust
the output of the profiling information.

There is also no indication of what the following entries mean:
*** tab[1007] p=1e8ae70 cb=c12f68 cnt=5 ac=0 al=0
    Ljava/io/BufferedWriter; 5 120

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