High RAM memory usage in RHEL 5.7 with no I/O cache and no intensive processes running
Issue
- A RHEL 5.7 system shows RAM being fully used, even though there's almost no disk cache usage, and no intensive processes are being run.
- System performance is generally slow.
- "free" output shows little to no diskcache & buffer usage, as opposed to https://access.redhat.com/knowledge/solutions/1138
Environment
- Red Hat Enterprise Linux 5.7
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