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...(length(x), size, replace, prob) : insufficient positive probabilities when i use something like: sample (1:4, prob=c(0,0,1,0))[1] i was expecting that to return a 3 every time while this is not exactly what i am using it for, i need the capabilities to deal with zeros (as the probability valuees that i will be using wil vary, and sometimes will include zeros), and this seems like the zero's are the problem... currently i am assigning zero values in my initial probability vector to a miniscule value(1E-4) is there a more efficient way to deal with this, or another command that does a...

Dear all, When I compared the performance of some application on both a Xen domU and a standard linux machine (where domU runs on a similar physical mahine), I notice the application runs faster on the domU than on the physical machine. Instrumenting the application code shows the application spends more time on popen() calls on domU than on the physical machine. I wonder if xenlinux does some