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//lib/tuned/virtual-guest/tuned.conf
# # tuned configuration # [main] summary=Optimize for running inside a virtual guest include=throughput-performance [vm] # If a workload mostly uses anonymous memory and it hits this limit, the entire # working set is buffered for I/O, and any more write buffering would require # swapping, so it's time to throttle writes until I/O can catch up. Workloads # that mostly use file mappings may be able to use even higher values. # # The generator of dirty data starts writeback at this percentage (system default # is 20%) dirty_bytes = 30% [sysctl] # Filesystem I/O is usually much more efficient than swapping, so try to keep # swapping low. It's usually safe to go even lower than this on systems with # server-grade storage. vm.swappiness = 30
