Tuning Pelican for running xrootd under valgrind #1677
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bbockelm
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I don't think we pull the actual defaults from docs/parameters.yaml yet, so the value we get from param.Xrootd_MaxStartupWait.GetDuration() is going to be 0 unless it's defined in the user's custom config. My guess is this is what's breaking the ticker.
Defaults can be defined in either config/resources/defaults.yaml or in our new config/config.go::SetServerDefaults
If xrootd is running under valgrind, the startup time may be much more than 10s. Provide a hidden tunable to give valgrind more time.
Under valgrind, its trivial to make the default cache timeouts hit frequently - make this adjustable so stress tests can succeed. Additionally, add a few helper RPMs for debugging under valgrind.
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Valgrind is incredibly useful C++ debugging tool to check for leaks and other memory usage errors.
However, it also makes the application incredibly slow: it's often a 20x (or more) performance penalty. Xrootd caches hit the timeouts frequently.
This PR adds a few hidden tunables to allow us to increase timeouts enough for xrootd to run under valgrind. It also adds some standard C++ debugging tools into the development container.