You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
48 lines
2.7 KiB
48 lines
2.7 KiB
S2IO Technologies XFrame 10 Gig adapter.
|
|
-------------------------------------------
|
|
|
|
I. Module loadable parameters.
|
|
When loaded as a module, the driver provides a host of Module loadable
|
|
parameters, so the device can be tuned as per the users needs.
|
|
A list of the Module params is given below.
|
|
(i) ring_num: This can be used to program the number of
|
|
receive rings used in the driver.
|
|
(ii) ring_len: This defines the number of descriptors each ring
|
|
can have. There can be a maximum of 8 rings.
|
|
(iii) frame_len: This is an array of size 8. Using this we can
|
|
set the maximum size of the received frame that can
|
|
be steered into the corrsponding receive ring.
|
|
(iv) fifo_num: This defines the number of Tx FIFOs thats used in
|
|
the driver.
|
|
(v) fifo_len: Each element defines the number of
|
|
Tx descriptors that can be associated with each
|
|
corresponding FIFO. There are a maximum of 8 FIFOs.
|
|
(vi) tx_prio: This is a bool, if module is loaded with a non-zero
|
|
value for tx_prio multi FIFO scheme is activated.
|
|
(vii) rx_prio: This is a bool, if module is loaded with a non-zero
|
|
value for tx_prio multi RING scheme is activated.
|
|
(viii) latency_timer: The value given against this param will be
|
|
loaded into the latency timer register in PCI Config
|
|
space, else the register is left with its reset value.
|
|
|
|
II. Performance tuning.
|
|
By changing a few sysctl parameters.
|
|
Copy the following lines into a file and run the following command,
|
|
"sysctl -p <file_name>"
|
|
### IPV4 specific settings
|
|
net.ipv4.tcp_timestamps = 0 # turns TCP timestamp support off, default 1, reduces CPU use
|
|
net.ipv4.tcp_sack = 0 # turn SACK support off, default on
|
|
# on systems with a VERY fast bus -> memory interface this is the big gainer
|
|
net.ipv4.tcp_rmem = 10000000 10000000 10000000 # sets min/default/max TCP read buffer, default 4096 87380 174760
|
|
net.ipv4.tcp_wmem = 10000000 10000000 10000000 # sets min/pressure/max TCP write buffer, default 4096 16384 131072
|
|
net.ipv4.tcp_mem = 10000000 10000000 10000000 # sets min/pressure/max TCP buffer space, default 31744 32256 32768
|
|
|
|
### CORE settings (mostly for socket and UDP effect)
|
|
net.core.rmem_max = 524287 # maximum receive socket buffer size, default 131071
|
|
net.core.wmem_max = 524287 # maximum send socket buffer size, default 131071
|
|
net.core.rmem_default = 524287 # default receive socket buffer size, default 65535
|
|
net.core.wmem_default = 524287 # default send socket buffer size, default 65535
|
|
net.core.optmem_max = 524287 # maximum amount of option memory buffers, default 10240
|
|
net.core.netdev_max_backlog = 300000 # number of unprocessed input packets before kernel starts dropping them, default 300
|
|
---End of performance tuning file---
|
|
|
|
|