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python: Run test suite with a time limit

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The test hang issue is not related to partial environment.  It's just a
known issue (for eg https://github.com/python/cpython/issues/91155) and
happens when we are unlucky.

So just run the test suite with a timeout.  1 SBU should be enough: it's
approximately 4 times of the time used by the slowest test case, on both
an old Athlon 64 3000+ and a Core i5-11300H.

I've not seen any test failure on a complete system (the expat-related
failure seems fixed by expat-2.6.2 or 2.6.1).  TODO: really test this
with LFS chroot and document failures if any.
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Xi Ruoyao 2024-04-05 21:58:39 +08:00
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chapter08/python.xml
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@ -78,11 +78,17 @@
<screen><userinput remap="make">make</userinput></screen> <screen><userinput remap="make">make</userinput></screen>
<para>Running the tests at this point is not recommended. The <para>Some tests are known to hang indefinitely. So to test the
tests are known to hang indefinitely in the partial LFS environment. results, run the test suite but set a 2-minute time limit for each
If desired, the tests can be rerun at the end of this chapter, or test case:</para>
when Python 3 is reinstalled in BLFS. To run the tests anyway,
issue <command>make test</command>.</para> <screen><userinput remap="test">make test TESTOPTS="--timeout 120"</userinput></screen>
<para>For a relatively slow system you may need to increase the time
limit and 1 SBU (measured when building Binutils pass 1 with one CPU
core) should be enough. Some tests are flaky, so the test suite will
automatically re-run failed tests. If a test failed but then passed
when re-run, it should be considered as passed.</para>
<para>Install the package:</para> <para>Install the package:</para>