/proc/sys/vm

$ ls -1 /proc/sys/vm
admin_reserve_kbytes
block_dump
compaction_proactiveness
compact_memory
compact_unevictable_allowed
dirty_background_bytes
dirty_background_ratio
dirty_bytes
dirty_expire_centisecs
dirty_ratio
dirtytime_expire_seconds
dirty_writeback_centisecs
drop_caches
extfrag_threshold
hugetlb_shm_group
laptop_mode
legacy_va_layout
lowmem_reserve_ratio
max_map_count
min_free_kbytes
mmap_min_addr
mmap_rnd_bits
mmap_rnd_compat_bits
nr_hugepages
nr_overcommit_hugepages
oom_dump_tasks
oom_kill_allocating_task
overcommit_kbytes
overcommit_memory
overcommit_ratio
page-cluster
page_lock_unfairness
panic_on_oom
percpu_pagelist_fraction
stat_interval
stat_refresh
swappiness
unprivileged_userfaultfd
user_reserve_kbytes
vfs_cache_pressure
watermark_boost_factor
watermark_scale_factor