For RHEL 7 and later, there is an additional field available, which is used instead of the calculation for -/+ buffers/cache line:.Relevant fields from /proc/meminfo to match them against the output of free -k:.Total used free shared buff/cache available RHEL 7 and later has a slightly changed output of the free command.RHEL 7 and later has an additional field called MemAvailable in /proc/meminfo.For more information on the output of the free command see How do I view system memory utilization in Red Hat Enterprise Linux?.For explanation on this issue have a look at Why are LowTotal, LowFree, HighTotal, and HighFree missing from /proc/meminfo on x86_64 RHEL 6? RHEL 5 also has some fields no longer present in RHEL 6.This is also marked in the Diagnostic Steps. The RHEL 5 output differs in some settings.Each field of cat /proc/meminfo will be discussed in the Diagnostics Steps.For definition of /proc/meminfo fields in Red Hat Enterprise Linux (RHEL) releases prior to RHEL 5, please look at What is indicated by each value in /proc/meminfo?. ![]() I want to compare the output of free -k to cat /proc/meminfo.I need an interpretation of /proc/meminfo output.
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