----- Original Message ---- From: Geoff <geoff.war...@optusnet.com.au> To: ubuntu-au@lists.ubuntu.com Sent: Sun, 31 July, 2011 12:52:14 PM Subject: memory
Hi there, Can anyone recommend a system memory manager/tweaker program? Geoff. ---------------------------------------------------------------- Hi Geoff, The layered architecture of the Linux system makes it close to impossible to manipulate memory usage. A program can request memory or release it, but beyond that the kernel controls what gets allocated, how it is released, and how it is cleaned up. To put it another way, above the hardware there is a memory manager which pools all physical and virtual memory, and this resource is shared and controlled by the memory manager. All memory therefore looks like virtual memory beyond this point, including (especially!) for programs in user space. Any data you can get from the system about memory usage therefore deals with this "virtual" memory space. It's possible to reserve some physical memory so that the memory manager and the kernel cannot use it (with badram), but that would mean that it would not be available to user space or kernel space at all. The purpose of badram is so that you can tell the system to not use damaged parts of a memory array - very nifty. I like to use Gkrellm to monitor my system generally and top can give useful information about more specific memory usage amongst other things. What did you actually want to be able to do? Chris. -- ubuntu-au mailing list ubuntu-au@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-au
