# The swappiness sysctl parameter represents the kernel's preference (or avoidance) of swap space. Swappiness can have a value between 0 and 100, the default value is 60. 
# A low value causes the kernel to avoid swapping, a higher value causes the kernel to try to use swap space. Using a low value on sufficient memory is known to improve responsiveness on many systems.
vm.swappiness=10

# The value controls the tendency of the kernel to reclaim the memory which is used for caching of directory and inode objects (VFS cache). 
# Lowering it from the default value of 100 makes the kernel less inclined to reclaim VFS cache (do not set it to 0, this may produce out-of-memory conditions)
vm.vfs_cache_pressure=75

# This action will speed up your boot and shutdown, because one less module is loaded. Additionally disabling watchdog timers increases performance and lowers power consumption
# Disable NMI watchdog
kernel.nmi_watchdog = 0

# Enable the sysctl setting kernel.unprivileged_userns_clone to allow normal users to run unprivileged containers.
kernel.unprivileged_userns_clone=1

# To hide any kernel messages from the console
kernel.printk = 3 3 3 3



###############-NOT USED-#################

# The kernel default is to buffer up to 10% of system RAM before flushing writes to the disk, which is insane. By setting a reasonable number of bytes for the `dirty_bytes` parameter, we can avoid sending the system into OOM during a large file transfer.
#vm.dirty_bytes = 16777216
#vm.dirty_background_bytes = 4194304

# Contains, as a percentage of total available memory that contains free pages and reclaimable
# pages, the number of pages at which a process which is generating disk writes will itself start
# writing out dirty data (Default is 20).
#vm.dirty_ratio = 10

# Contains, as a percentage of total available memory that contains free pages and reclaimable
# pages, the number of pages at which the background kernel flusher threads will start writing out
# dirty data (Default is 10).
#vm.dirty_background_ratio = 5

# This tunable is used to define when dirty data is old enough to be eligible for writeout by the
# kernel flusher threads.  It is expressed in 100'ths of a second.  Data which has been dirty
# in-memory for longer than this interval will be written out next time a flusher thread wakes up
# (Default is 3000).
#vm.dirty_expire_centisecs = 3000

# The kernel flusher threads will periodically wake up and write `old' data out to disk.  This
# tunable expresses the interval between those wakeups, in 100'ths of a second (Default is 500).
#vm.dirty_writeback_centisecs = 1500

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