Abstract: A Web system includes a server which receives URL requests from client computers and responds by transmitting the requested data to the clients along with performance monitoring instructions. These instructions cause the clients to send performance message back to the server indicating the time required on the client for certain acts associated with transmitted data. Often they cause a client to monitor the time required to download a composite data object, such as a Web page which include separately downloaded images, frames, or applets. They can also instruct the client to measure other times, such as the time required to download individual component objects; to execute given code, or to execute a transaction. Preferably the server includes means for automatically analyzing the performance messages it receives to detect different types of performance problems.

Abstract: Network computers have a plurality of network-level interfaces associated with overlapping portions of the network-level address space, such as those represented by multiple static entries with the same address range, or multiple default entries in a network-level routing table. The computers distribute outgoing messages address to the overlapping portions of the address space between the multiple network interfaces associated with those overlapping portions. In the TCP/IP environment, the distribution of messages can be performed on the basis of the outgoing message's source port, the amount of traffic associated with a TCP/IP service indicated by the message's destination port, or by the relative amount of traffic going though each of the respective network interfaces. In some embodiments, the computers are multi-homed end systems which pick the source address of outgoing messages and their associated socket.

Abstract: An apparatus helps a user steadily hold a pointable device, such as a camera, a telescope, or a gun. It includes an arm rest having upper and lower portions, respectively, for supporting an upper arm from below and for restricting rotation of a lower arm bent at the elbow. The upper and lower arm holding portions each can press against a user's arm from enough directions to retard motion of the arm perpendicular to its length. The upper and lower portions can include cylindrical inner surfaces angled to bend an arm at least sixty degrees at the elbow. A support holds the arm rest from below. The support can include a rigid elongated member. In some embodiments, this member reaches to the ground. In many others, it rests against a user's hip and has a lower end designed to be supported by a pocket, belt, or Velcro pad on the user's hip.