[LTP] [PATCH v2 01/30] Introduce a concept of max runtime

[Cyril Hrubis]

Hi!
> > --- a/doc/user-guide.txt
> > +++ b/doc/user-guide.txt
> > @@ -25,6 +25,10 @@ For running LTP network tests see
> > `testcases/network/README.md`.
> >  | 'LTP_TIMEOUT_MUL'     | Multiply timeout, must be number >= 1 (> 1 is
> > useful for
> >                            slow machines to avoid unexpected timeout).
> >                            Variable is also used in shell tests, but
> > ceiled to int.
> > +| 'LTP_RUNTIME_MUL'     | Multiplies maximal test iteration runtime.
> > Tests
> >
> 
> Seems 'LTP_RUNTIME_MUL'  does not take effect, maybe there is a bug
> in saving multiply runtime to results->max_iteration_runtime?
> 
> --- a/lib/tst_test.c
> +++ b/lib/tst_test.c
> @@ -1634,7 +1634,7 @@ void tst_run_tcases(int argc, char *argv[], struct
> tst_test *self)
>         SAFE_SIGNAL(SIGUSR1, heartbeat_handler);
> 
>         if (tst_test->max_iteration_runtime)
> -               results->max_iteration_runtime =
> tst_test->max_iteration_runtime;
> +               results->max_iteration_runtime = multiply_runtime();
> 
>         set_timeout();

My bad it's actually used in the -h switch but not when the runtime is
actually set. Will fix.

> $ LTP_RUNTIME_MUL=2 ./test_runtime01
> tst_test.c:1522: TINFO: Timeout per run is 0h 00m 35s
> test_runtime01.c:16: TINFO: Remaining runtime 5
> test_runtime01.c:16: TINFO: Remaining runtime 4
> test_runtime01.c:16: TINFO: Remaining runtime 3
> test_runtime01.c:16: TINFO: Remaining runtime 2
> test_runtime01.c:16: TINFO: Remaining runtime 1
> test_runtime01.c:16: TINFO: Remaining runtime 0
> test_runtime01.c:20: TPASS: Finished loop!
> 
> Summary:
> passed   1
> failed   0
> broken   0
> skipped  0
> warnings 0
> 
> 
> +++ b/lib/newlib_tests/test_runtime02.c
> > @@ -0,0 +1,31 @@
> > +// SPDX-License-Identifier: GPL-2.0-or-later
> > +/*
> > + * Copyright (c) 2021, Linux Test Project
> > + */
> > +/*
> > + * This test is set up so that the timeout is not long enough to guarantee
> > + * enough runtime for two iterations, i.e. the timeout without offset and
> > after
> > + * scaling is too small and the tests ends up with TBROK.
> > + *
> > + * You can fix this by exporting LTP_MAX_TEST_RUNTIME=10 before executing
> > the
> >
> 
> I didn't find where to achieve this LTP_MAX_TEST_RUNTIME function in the
> patchset.

That is a leftover from the v1 of the patchset that should be removed.

-- 
Cyril Hrubis
chrubis@suse.cz