RHEL6.x Tuning Virtual Memory


    A value from 0 to 100 which controls the degree to which the system
swaps.A high value prioritizes system performance, aggressively swapping
processes out of physical memory when they are not active. A low value
prioritizes interactivity and avoids swapping processes out of physical
memory for as long as possible, which decreases response latency. The
default value is 60.
    A high swappiness value is not recommended for database workloads.
For example, for Oracle databases, Red Hat recommends a swappiness value
of 10.






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