[Python-Dev] bsddb tests disabled by default (original) (raw)

Brett Cannon brett at python.org
Sat Sep 20 06:46:31 CEST 2008

On Fri, Sep 19, 2008 at 8:36 PM, Jesus Cea <jcea at jcea.es> wrote:

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Brett Cannon wrote: Well, 'time' says the test takes 16.09 sec user and 16.09 sec system on my MacBook, but a total execution time of almost 8 minutes. That is too long to be on by default. Uhmmmm... That is very strange.

Well, it has always been that way for me, so I always assumed test_bsddb3 was just a really long test.

A lot of the disk traffic generated by the testsuite is "syncronous". By default, under unix, the testsuite should be stored in "/tmp", that is usually a ramdisk or something similar. That is the case under Solaris 10.

I don't know about MacOS.

Don't think it is: drwxrwxrwt 11 root wheel 374B 19 Sep 20:44 tmp/

I'm executing the testsuite under linux, with a /tmp backed by a proper persistent FS (ReiserFS3). This machine is fairly busy, so the testsuite actual time should be better:

But you could have a faster CPU, more RAM, Reiser could easily be faster than HFS+, etc. There is no way any of these comparisons are going to work. OS X might just plain suck at running test_bsddb3.

Only thing I can think of is that Berkeley DB 4.7 is a ton faster than 4.6 or I am running something differently than you:

time ./python.exe Lib/test/regrtest.py -uall test_bsddb3 ~/Dev/python/2.x/pristine test_bsddb3 Berkeley DB 4.6.21: (September 27, 2007) Test path prefix: /var/folders/MN/MN-E3HgoFXSKDXb9le7FQ++++TI/-Tmp-/z-test_bsddb3-527 test_bsddb3 still working, be patient... 1 test OK. [48048 refs] ./python.exe Lib/test/regrtest.py -uall test_bsddb3 15.81s user 15.54s system 6% cpu 8:41.56 total

-Brett

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