If you are seeing unpredictable intermittent slowdowns in network response from a consistently loaded server, you might investigate setting the sq_max_size parameter by adding the following line to the /etc/system file:
set sq_max_size=512
This setting adjusts the size of the sync queue, which transfers packets from the hardware driver to the TCP/IP protocol driver. Using the value of 512 allows the queue to accommodate high volumes of network traffic without overflowing.