# # tuned configuration # [main] summary=Optimize for running inside a virtual guest include=throughput-performance [sysctl] # 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%) vm.dirty_ratio = 30 # 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