Listing: Tuning des Linux-Kernels für Ceph3

# Controls the default maxmimum size of a
presage queue kerne1.msgmax = 65536
kernel.msgmax = 65536
# Controls the maximum shared segment size,
in bytes
kernel.shmmax = 68719476736
# Controls the maximum number of shared
memory segments, in pages
kernel.shmall = 4294967296
# Ceph Networking Optimizations
net.core.rmem_default = 56623104
net.core.rmem_max = 67108864
net.core.wmem_default = 56623104
net.core.wmem_max = 67108864
net.ipv4.tcp_rmem = 4096 87380 33554432
net.ipv4.tcp_wmem = 4096 65536 33554432
net.ipv4.tcp_congestion_control=htcp
net.core.default_qdisc = fq
net.core.somaxconn = 40000
net.core.netdev_max_backlog = 300000
net.core.optmem_max = 40960
net.ipv4.tcp_max_syn_backlog = 30000
net.ipv4.tcp_max_tw_buckets = 1048576
net.ipv4.tcp_slow_start_after_idle = 0
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_syncookies = 0
net.ipv4.tcp_mtu_probing = 1