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How to reset stdin after an EAGAIN error? [migrated]

This is an error that I encountered in a large ruby script. I've managed to boil it down to what seems like the essence of the problem. In discussing this problem, the script was run by someone on ...
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0answers
173 views

Problems when using the framebuffer device directly

I am writing a program using the framebuffer device directly and I have three problems there. 1) The only way I can set the screen resolution correct is by passing the kernel option during boot: ...
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1answer
348 views

Behavior of mmap'd memory on memory pressure

I have a large tar file (60GB) containing image files. I'm using mmap() on this entire file to read in these images, which are accessed randomly. I'm using mmap() for the following reasons: Thread ...
7
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3answers
370 views

Memory size for kernel mmap operation

I'm interested in the way Linux mmaps files into the main memory (in my context its for executing, but I guess the mmap process is the same for writing and reading as well) and which size it uses. So ...
4
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1answer
971 views

Hung system call

So I'm working with a custom kernel module that I'm writing a python front end for. The kernel module works, and it adds a framebuffer device file to /dev/fb1. I can read and write to it fine. I've ...