Hacked the test to print out info each loop:


test_getcwd_long_pathnames (test.test_posix.PosixTester) ... [0/0] getcwd-test-directory-0123456789abcdef-01234567890abcdef
[1/57] getcwd-test-directory-0123456789abcdef-01234567890abcdef
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[69/3933] getcwd-test-directory-0123456789abcdef-01234567890abcdef
[70/3990] getcwd-test-directory-0123456789abcdef-01234567890abcdef
^C^C
load: 1.08  cmd: python 4486 [runnable] 0.07u 14.38s 40% 10012k
load: 1.08  cmd: python 4486 [runnable] 0.07u 14.91s 40% 10012k
load: 1.08  cmd: python 4486 [runnable] 0.07u 15.24s 42% 10012k
load: 1.08  cmd: python 4486 [runnable] 0.07u 15.40s 42% 10012k
Terminated 

(Had to kill it from a different process, mind you; the ctrl-Cs never get caught.)

Yeah, it's a VM.  Also, it looks like 3.x uses 1027 instead of 4099.

It's definitely odd that it ends up spinning in the kernel at ~3990.  I'll do some more digging.