# Disable response to broadcasts.
# You don't want yourself becoming a Smurf amplifier.
net.ipv4.icmp_echo_ignore_broadcasts = 1
# enable route verification on all interfaces
net.ipv4.conf.all.rp_filter = 1
# enable ipV6 forwarding
#net.ipv6.conf.all.forwarding = 1
# increase the number of possible inotify(7) watches
fs.inotify.max_user_watches = 65536
# avoid deleting secondary IPs on deleting the primary IP
net.ipv4.conf.default.promote_secondaries = 1
net.ipv4.conf.all.promote_secondaries = 1
fs.file-max = 1048576
kernel.sem = 250 32000 100 128
kernel.shmall = 4294967296
kernel.shmmax = 68719476736
# net.core.netdev_max_backlog = 400000
net.core.optmem_max = 30000000
net.core.rmem_default = 30000000
net.core.wmem_default = 30000000
# net.core.rmem_max = 30000000
# net.core.wmem_max = 30000000
# net.core.somaxconn = 300000
net.ipv4.conf.all.arp_announce = 2
net.ipv4.conf.all.arp_ignore = 1
net.ipv4.conf.default.rp_filter = 1
net.ipv4.conf.default.accept_source_route = 0
net.ipv4.ip_forward = 0
net.ipv4.ip_local_port_range = 1024 65000
# net.ipv4.tcp_fin_timeout = 10
net.ipv4.tcp_max_syn_backlog = 30000
net.ipv4.tcp_max_tw_buckets = 2000000
net.ipv4.tcp_mem = 30000000 30000000 30000000
# net.ipv4.tcp_rmem = 30000000 30000000 30000000
# net.ipv4.tcp_wmem = 30000000 30000000 30000000
# net.ipv4.tcp_timestamps = 0
# net.ipv4.tcp_sack = 0
# vm.nr_hugepages = 9216
# 12GB of Large Pages
# vm.nr_hugepages = 6144
# 13GB of Large Pages
# vm.nr_hugepages = 6656
##Disabled for driver usage
## 16GB of Large Pages
#vm.nr_hugepages = 8192
# 18GB of Large Pages
# vm.nr_hugepages = 9216
# 20GB of Large Pages
# vm.nr_hugepages = 10240
# 32GB of Large Pages
# vm.nr_hugepages = 16384
kernel.sched_compat_yield = 1
## From Vijay
net.core.somaxconn = 32767
net.core.netdev_max_backlog = 250000
net.ipv4.tcp_fin_timeout = 30
net.ipv4.tcp_keepalive_intvl = 15
net.ipv4.tcp_keepalive_probes = 5
net.core.rmem_max = 32554432
net.core.wmem_max = 32554432
net.ipv4.tcp_rmem = 20480 174760 32554432
net.ipv4.tcp_wmem = 20480 174760 32554432
net.ipv4.tcp_window_scaling = 1
net.ipv4.tcp_timestamps = 1
net.ipv4.tcp_sack = 1
net.ipv4.tcp_no_metrics_save = 1
Processor info for server perf208
Maximum frequency is 3591 MHz\n\n
processor : 0
cpu family : 6
model : 44
model name : Intel(R) Xeon(R) CPU X5690 @ 3.47GHz
cpu MHz : 1596.000
cache size : 12288 KB
cpu cores : 6
cpuid level : 11
cache_alignment : 64
processor : 1
cpu family : 6
model : 44
model name : Intel(R) Xeon(R) CPU X5690 @ 3.47GHz
cpu MHz : 3591.000
cache size : 12288 KB
cpu cores : 6
cpuid level : 11
cache_alignment : 64
processor : 2
cpu family : 6
model : 44
model name : Intel(R) Xeon(R) CPU X5690 @ 3.47GHz
cpu MHz : 1596.000
cache size : 12288 KB
cpu cores : 6
cpuid level : 11
cache_alignment : 64
processor : 3
cpu family : 6
model : 44
model name : Intel(R) Xeon(R) CPU X5690 @ 3.47GHz
cpu MHz : 1596.000
cache size : 12288 KB
cpu cores : 6
cpuid level : 11
cache_alignment : 64
processor : 4
cpu family : 6
model : 44
model name : Intel(R) Xeon(R) CPU X5690 @ 3.47GHz
cpu MHz : 1596.000
cache size : 12288 KB
cpu cores : 6
cpuid level : 11
cache_alignment : 64
processor : 5
cpu family : 6
model : 44
model name : Intel(R) Xeon(R) CPU X5690 @ 3.47GHz
cpu MHz : 1596.000
cache size : 12288 KB
cpu cores : 6
cpuid level : 11
cache_alignment : 64
processor : 6
cpu family : 6
model : 44
model name : Intel(R) Xeon(R) CPU X5690 @ 3.47GHz
cpu MHz : 3591.000
cache size : 12288 KB
cpu cores : 6
cpuid level : 11
cache_alignment : 64
processor : 7
cpu family : 6
model : 44
model name : Intel(R) Xeon(R) CPU X5690 @ 3.47GHz
cpu MHz : 1596.000
cache size : 12288 KB
cpu cores : 6
cpuid level : 11
cache_alignment : 64
processor : 8
cpu family : 6
model : 44
model name : Intel(R) Xeon(R) CPU X5690 @ 3.47GHz
cpu MHz : 1596.000
cache size : 12288 KB
cpu cores : 6
cpuid level : 11
cache_alignment : 64
processor : 9
cpu family : 6
model : 44
model name : Intel(R) Xeon(R) CPU X5690 @ 3.47GHz
cpu MHz : 1596.000
cache size : 12288 KB
cpu cores : 6
cpuid level : 11
cache_alignment : 64
processor : 10
cpu family : 6
model : 44
model name : Intel(R) Xeon(R) CPU X5690 @ 3.47GHz
cpu MHz : 3591.000
cache size : 12288 KB
cpu cores : 6
cpuid level : 11
cache_alignment : 64
processor : 11
cpu family : 6
model : 44
model name : Intel(R) Xeon(R) CPU X5690 @ 3.47GHz
cpu MHz : 1596.000
cache size : 12288 KB
cpu cores : 6
cpuid level : 11
cache_alignment : 64
processor : 12
cpu family : 6
model : 44
model name : Intel(R) Xeon(R) CPU X5690 @ 3.47GHz
cpu MHz : 1596.000
cache size : 12288 KB
cpu cores : 6
cpuid level : 11
cache_alignment : 64
processor : 13
cpu family : 6
model : 44
model name : Intel(R) Xeon(R) CPU X5690 @ 3.47GHz
cpu MHz : 3458.000
cache size : 12288 KB
cpu cores : 6
cpuid level : 11
cache_alignment : 64
processor : 14
cpu family : 6
model : 44
model name : Intel(R) Xeon(R) CPU X5690 @ 3.47GHz
cpu MHz : 1596.000
cache size : 12288 KB
cpu cores : 6
cpuid level : 11
cache_alignment : 64
processor : 15
cpu family : 6
model : 44
model name : Intel(R) Xeon(R) CPU X5690 @ 3.47GHz
cpu MHz : 1596.000
cache size : 12288 KB
cpu cores : 6
cpuid level : 11
cache_alignment : 64
processor : 16
cpu family : 6
model : 44
model name : Intel(R) Xeon(R) CPU X5690 @ 3.47GHz
cpu MHz : 1596.000
cache size : 12288 KB
cpu cores : 6
cpuid level : 11
cache_alignment : 64
processor : 17
cpu family : 6
model : 44
model name : Intel(R) Xeon(R) CPU X5690 @ 3.47GHz
cpu MHz : 1596.000
cache size : 12288 KB
cpu cores : 6
cpuid level : 11
cache_alignment : 64
processor : 18
cpu family : 6
model : 44
model name : Intel(R) Xeon(R) CPU X5690 @ 3.47GHz
cpu MHz : 1596.000
cache size : 12288 KB
cpu cores : 6
cpuid level : 11
cache_alignment : 64
processor : 19
cpu family : 6
model : 44
model name : Intel(R) Xeon(R) CPU X5690 @ 3.47GHz
cpu MHz : 1596.000
cache size : 12288 KB
cpu cores : 6
cpuid level : 11
cache_alignment : 64
processor : 20
cpu family : 6
model : 44
model name : Intel(R) Xeon(R) CPU X5690 @ 3.47GHz
cpu MHz : 1596.000
cache size : 12288 KB
cpu cores : 6
cpuid level : 11
cache_alignment : 64
processor : 21
cpu family : 6
model : 44
model name : Intel(R) Xeon(R) CPU X5690 @ 3.47GHz
cpu MHz : 1596.000
cache size : 12288 KB
cpu cores : 6
cpuid level : 11
cache_alignment : 64
processor : 22
cpu family : 6
model : 44
model name : Intel(R) Xeon(R) CPU X5690 @ 3.47GHz
cpu MHz : 1596.000
cache size : 12288 KB
cpu cores : 6
cpuid level : 11
cache_alignment : 64
processor : 23
cpu family : 6
model : 44
model name : Intel(R) Xeon(R) CPU X5690 @ 3.47GHz
cpu MHz : 1596.000
cache size : 12288 KB
cpu cores : 6
cpuid level : 11
cache_alignment : 64
Memory info for server perf208
MemTotal: 99064320 kB
MemFree: 74197288 kB
SwapCached: 0 kB
SwapTotal: 2104472 kB
SwapFree: 2104472 kB
Kernel on server perf208
Linux 2.6.32.54-0.3-default #1 SMP 2012-01-27 17:38:56 +0100 x86_64