kernel.shmmax = 18446744073709551615
kernel.shmall = 1152921504606846720
vm.dirty_ratio = 80
vm.dirty_background_ratio = 50
vm.overcommit_memory = 2
vm.overcommit_ratio = 100
vm.zone_reclaim_mode = 3
kernel.numa_balancing = 0
#let users use 'perf'
kernel.perf_event_paranoid = -1
kernel.kptr_restrict = 0
#MELLANOX recommended settings
# Disable the TCP timestamps option for better CPU utilization:
net.ipv4.tcp_timestamps = 0
# Disable the TCP selective acks option for better CPU utilization:
net.ipv4.tcp_sack = 0
# Increase the maximum length of processor input queues:
net.core.netdev_max_backlog = 250000
# Increase the TCP maximum and default buffer sizes using setsockopt():
net.core.rmem_max = 16777216
net.core.wmem_max = 16777216
net.core.rmem_default = 16777216
net.core.wmem_default = 16777216
net.core.optmem_max = 16777216
# Increase memory thresholds to prevent packet dropping:
net.ipv4.tcp_mem = 16777216 16777216 16777216
# Increase Linux.s auto-tuning of TCP buffer limits. The minimum, default, and maximum number of bytes to use are:
net.ipv4.tcp_rmem = 4096 262144 16777216
net.ipv4.tcp_wmem = 4096 262144 16777216
# Enable low latency mode for TCP:
net.ipv4.tcp_low_latency = 1
# Add settings for Linpack
kernel.sched_cfs_bandwidth_slice_us = 50000
kernel.sched_latency_ns = 240000000
kernel.sched_migration_cost_ns = 5000000
kernel.sched_min_granularity_ns = 10000000
kernel.sched_wakeup_granularity_ns = 150000000
fs.aio-max-nr = 1048576