![]() MemFree: Sum of LowFree+HighFree (overall stat). physical RAM minus a few reserved bits and the kernel binary code). Usually, on boot up, the Linux kernel will recognize all physical memory and makes certain that most of the available physical memory will be utilized for buffers and cached memory as the following free command shows: This is an explanation on how Linux uses and manages memory. The amount of free buffered / cached memory can be seen in the free command, also note that in this case no swap is even in use. ![]() Top command reports NetBackup (tm) processes are using only a small percentage of memory, the kernel has most likely allocated the memory as buffered / cached memory. ![]()
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