Sybase 12.4.2 - Manual (Page 481)

CHAPTER 12 Managing System Resources
461
Figure 12-5: Isolating heavy network users
Put small amounts of data in small packets
If you send small amounts of data over the network, keep the default network
packet size small (default is 512 bytes). The
-p server startup option lets you
specify a maximum packet size. Your client application may also let you set the
packet size.