I'm getting similar slowdowns with my VirtualBox Ubuntu 9.04 I'm suspecting that the problem is not -only- caused by RandomUtils because:
1. I'm familiar with MerseneTwisterRNG slowdowns (I use it a lot) but the test time used to be reported accurately by maven. Now maven reports that a test took less than a second but it actually took a lot more ! 2. Most of my tests actually call RandomUtils.useTestSeed() in setup() (InMemInputSplitTest included) but the tests still take a lot of time, and again its not reported accurately by maven 3. I generally launch a 'mvn clean install' every Thursday. I never got this slowdowns until last Thursday (dit we change anything that could have caused this slowdowns) On Sun, Jan 17, 2010 at 12:33 AM, Benson Margulies <bimargul...@gmail.com> wrote: >>> >> Unit tests should generally be using a fixed seed and not need to load a >> secure seed from dev/random. I would say that RandomUtils is probably the >> problem here. The secure seed should be loaded lazily only if the test seed >> is not in use. > > The problem, as I see it, is that the uncommons-math package start > initializing a random seed as soon as you touch it, whether you need > it or not. RandomUtils can only avoid this by avoiding uncommons-math > in unit test mode. > >> >> >> >> -- >> Ted Dunning, CTO >> DeepDyve >> >
