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| author | Björn Gustavsson <[email protected]> | 2011-12-30 07:29:51 +0100 |
|---|---|---|
| committer | Björn Gustavsson <[email protected]> | 2012-01-04 16:12:28 +0100 |
| commit | 374020f5f8caa321db46d593aa620ef989f9a758 (patch) | |
| tree | c0d6c7c8f29fb69626838af18a715878d36eac92 | |
| parent | 19af90eb5654915de72f45127a17a75cb0d69cbe (diff) | |
| download | otp-374020f5f8caa321db46d593aa620ef989f9a758.tar.gz otp-374020f5f8caa321db46d593aa620ef989f9a758.tar.bz2 otp-374020f5f8caa321db46d593aa620ef989f9a758.zip | |
test_lib:p_run/2: Be careful about how many parallel processes we use
We probably don't gain anything by using more processes than available
schedulers. Also, if 'cover' is being run, using more than one process
may make it slower, so we will be very conservative and use only one
process in that case.
| -rw-r--r-- | lib/compiler/test/test_lib.erl | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/lib/compiler/test/test_lib.erl b/lib/compiler/test/test_lib.erl index 53d8c04169..2295592a38 100644 --- a/lib/compiler/test/test_lib.erl +++ b/lib/compiler/test/test_lib.erl @@ -77,7 +77,14 @@ get_data_dir(Config) -> %% Will fail the test case if there were any errors. p_run(Test, List) -> - N = erlang:system_info(schedulers) + 1, + N = case ?t:is_cover() of + false -> + erlang:system_info(schedulers); + true -> + %% Cover is running. Using more than one process + %% will probably only slow down compilation. + 1 + end, p_run_loop(Test, List, N, [], 0, 0). p_run_loop(_, [], _, [], Errors, Ws) -> |