limits

The following problem occurs on a machine running Ubuntu 10.04 with the 2.6.32-22-generic kernel: Setting a limit for the Resident Set Size (RSS) of a process does not seem to have any effect. I currently set the limit in Python with the following code: import resource # (100, 100) is the (soft, hard) limit. ~100kb. resource.setrlimit(resource.RLIMIT_RSS, (100, 100)) memory_sink = ['a']*10000000 # this should fail The list, memory_sink, succeeds every time. When I check RSS usage with top, I can easily get the process to use 1gb of RAM, which means that the limit is not working. Do RSS limits

How can I portably find out the smallest of INT_MAX and abs( INT_MIN )? (That's the mathematical absolute value of INT_MIN , not a call to the abs function.) It should be as same as INT_MAX in most systems, but I'm looking for a more portable way. While the typical value of INT_MIN is -2147483648, and the typical value of INT_MAX is 2147483647, it is not guaranteed by the standard. TL;DR: The value you're searching for is INT_MAX in a conforming implementation. But calculating min(INT_MAX, abs(INT_MIN)) isn't portable. The possible values of INT_MIN and INT_MAX INT_MIN and INT_MAX are defined

here is a quite simple question(I think), is there a STL library method that provides the limit of a variable type (e.g integer) ? I know these limits differ on different computers but there must be a way to get them through a method, right? Also, would it be really hard to write a method to calculate the limit of a variable type? I'm just curious! :) Thanks ;). Use std::numeric_limits : // numeric_limits example // from the page I linked #include <iostream> #include <limits> using namespace std; int main () { cout << boolalpha; cout << "Minimum value for int: " << numeric_limits<int>::min() <

What is the maximum memory limits per application for Android 2.2? It depends on the particular device, usually ranges between 16 and 48 MB. The lower limit for a low density / small screen, and medium density / normal screen device is 16 MB. The lower limit for a high density / normal screen device is 24 MB. Individual device manufactures can and do raise this limit for their device, depending on how much RAM the device has (and how many megapixels the camera is etc), but if you stay within those lower limits you should be good on all devices. Just a footnote(I don't currently have the enough

I am using geom_text to annotate plots in gglot2 and I want use relative positioning rather than absolute. That is, I want a position of (0.5, 0.5) to be dead center regardless of the x and y axis limits. Is that possible? Alternatively I could of course transform a relative position to an absolute one if I had the x and y limits. Is it possible to extract those from a plot? If you know the range of the data in your plot, you can calculate the "true" x and y limits using the fact that ggplot using an additive expansion factor of 0.05 by default, so that the extents of the graph extend just

For my Java apps with very long classpaths, I cannot see the main class specified near the end of the arg list when using ps. I think this stems from my Ubuntu system's size limit on /proc/pid/cmdline. How can I increase this limit? You can't change this dynamically, the limit is hard-coded in the kernel to PAGE_SIZE in fs/proc/base.c: 274 int res = 0; 275 unsigned int len; 276 struct mm_struct *mm = get_task_mm(task); 277 if (!mm) 278 goto out; 279 if (!mm->arg_end) 280 goto out_mm; /* Shh! No looking before we're done */ 281 282 len = mm->arg_end - mm->arg_start; 283 284 if (len > PAGE_SIZE)

I know that minimum number of parameters in function definition is zero, but what is the maximum number of parameters in function definition? I am asking the question just for the sake of knowledge and out of curiosity, not that I am going to write a real function. Yes, there are limits imposed by the implementation. Your answer is given in the bold text in the following excerpt from the C++ Standard. 1. C++ Language Annex B - Implementation quantities Because computers are finite, C + + implementations are inevitably limited in the size of the programs they can successfully process. Every