[Pvfs2-developers] patches: test programs

[Phil Carns]

These patches add some new test cases into the test subdirectory of PVFS2:

pvfs2-test-aio.patch:
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This set of test programs allow comparison of normal io (pread/pwrite) 
vs. aio vs. alt-aio (as implemented in pvfs2 with the "alt-aio" trove 
method).  There isn't much depth, but it at least gives a little bit of 
insight into the details of the read/write path independent of how it is 
used by PVFS.  I've used this test program to help isolate some system 
bugs and also to help figure motivate the alt-aio approach.

pvfs2-test-tcache.patch
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This patch enhances the existing tcache test program to cover more test 
cases and to print out more verbose information while the test is running.
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