Why are LowTotal, LowFree, HighTotal, and HighFree missing from /proc/meminfo on x86_64 RHEL 6?
Issue
- The /proc/meminfo contents have changed. Releases prior to Red Hat Enterprise Linux (RHEL) 6 had the following information:
- HighTotal and HighFree — The total and free amount of memory, in kilobytes, that is not directly mapped into kernel space. The HighTotal value can vary based on the type of kernel used.
- LowTotal and LowFree — The total and free amount of memory, in kilobytes, that is directly mapped into kernel space. The LowTotal value can vary based on the type of kernel used.
- There are values missing in /proc/meminfo in RHEL 6 that used to be there in prior releases.
Environment
- Red Hat Enterprise Linux (RHEL) 5
- Red Hat Enterprise Linux (RHEL) 6, 64 bit
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