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Hi, have any try to tweak CPU tweak at boot?
(You need to add those entries through the web GUI at System -> Advanced, click on the System Tunables tab) ?
fs.file-max = 65535
net.core.rmem_default = 262144
net.core.rmem_max = 262144
net.core.wmem_default = 262144
net.core.wmem_max = 262144
net.ipv4.tcp_rmem = 4096 87380 8388608
net.ipv4.tcp_wmem = 4096 65536 8388608
net.ipv4.tcp_mem = 4096 4096 4096
net.ipv4.tcp_low_latency = 1
net.core.netdev_max_backlog = 4000
net.ipv4.ip_local_port_range = 1024 65000
net.ipv4.tcp_max_syn_backlog = 16384 -
Or this:
Increase size of file handles and inode cache
fs.file-max = 2097152
tells the kernel how many TCP sockets that are not attached to any
user file handle to maintain. In case this number is exceeded,
orphaned connections are immediately reset and a warning is printed.
net.ipv4.tcp_max_orphans = 60000
Do not cache metrics on closing connections
net.ipv4.tcp_no_metrics_save = 1
Turn on window scaling which can enlarge the transfer window:
net.ipv4.tcp_window_scaling = 1
Enable timestamps as defined in RFC1323:
net.ipv4.tcp_timestamps = 1
Enable select acknowledgments:
net.ipv4.tcp_sack = 1
Maximum number of remembered connection requests, which did not yet
receive an acknowledgment from connecting client.
net.ipv4.tcp_max_syn_backlog = 10240
recommended default congestion control is htcp
net.ipv4.tcp_congestion_control=htcp
recommended for hosts with jumbo frames enabled
net.ipv4.tcp_mtu_probing=1
Number of times SYNACKs for passive TCP connection.
net.ipv4.tcp_synack_retries = 2
Allowed local port range
net.ipv4.ip_local_port_range = 1024 65535
Protect Against TCP Time-Wait
net.ipv4.tcp_rfc1337 = 1
Decrease the time default value for tcp_fin_timeout connection
net.ipv4.tcp_fin_timeout = 15
Increase number of incoming connections
somaxconn defines the number of request_sock structures
allocated per each listen call. The
queue is persistent through the life of the listen socket.
net.core.somaxconn = 1024
Increase number of incoming connections backlog queue
Sets the maximum number of packets, queued on the INPUT
side, when the interface receives packets faster than
kernel can process them.
net.core.netdev_max_backlog = 65536
Increase the maximum amount of option memory buffers
net.core.optmem_max = 25165824
Increase the maximum total buffer-space allocatable
This is measured in units of pages (4096 bytes)
net.ipv4.tcp_mem = 65536 131072 262144
net.ipv4.udp_mem = 65536 131072 262144Set the max OS send buffer size (wmem) and receive buffer
size (rmem) to 12 MB for queues on all protocols. In other
words set the amount of memory that is allocated for each
TCP socket when it is opened or created while transferring files
Default Socket Receive Buffer
net.core.rmem_default = 25165824
Maximum Socket Receive Buffer
net.core.rmem_max = 25165824
Increase the read-buffer space allocatable (minimum size,
initial size, and maximum size in bytes)
net.ipv4.tcp_rmem = 20480 12582912 25165824
net.ipv4.udp_rmem_min = 16384Default Socket Send Buffer
net.core.wmem_default = 25165824
Maximum Socket Send Buffer
net.core.wmem_max = 25165824
Increase the write-buffer-space allocatable
net.ipv4.tcp_wmem = 20480 12582912 25165824
net.ipv4.udp_wmem_min = 16384Increase the tcp-time-wait buckets pool size to prevent simple DOS attacks
net.ipv4.tcp_max_tw_buckets = 1440000
net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_tw_reuse = 1
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What are you trying to achieve exactly? Are the default values not working for you?