A state of affairs that arises when there is conflict for some common resource. For example, network contention arises when two or more processors attempt to communicate over the same part of a common network. Bus contention arises inside multiprocessor systems sharing a shared-memory bus.
The condition that arises when two or more users simultaneously request access to the same network resource.
A media-access control strategy in which devices attempt to transmit when the channel is not being used by another device. If two devices attempt to transmit at the same time, the contention strategy requires that both devices temporarily stop transmitting until the channel is free again.
An event occurring when two or more tasks wait for processing at the same resource (also called non-instant availability of resources).
Occurs when several CPUs or processes need to access the same resource at the same time.
The unavailability of a resource because of it's use by another Thread?.
A method of line control in which terminals compete with each other for permission to transmit over a common channel. If the channel is free, the terminal transmits. If the channel is in use by another terminal, the terminal attempting to transmit waits until the channel is free.
When some process has to wait for a resource that is being used by another process.
Competition for resources.
Where two tasks each want an exclusive resource. You may hear talk of, for example, spinlock contention, which is where one or more tasks is commonly busy-waiting for a spinlock to become unlocked, as it is being taken by other tasks.
Tthe condition that occurs when two or more programs try to access the same data at the same time.
A condition on a multidrop communication channel when two or more locations try to transmit at the same time.
The result of two or more devices attempting to access the same resource at the same time.
A situation that occurs when several processes attempt to access the same resource simultaneously. An example is memory contention in shared memory multiprocessors, which occurs when two processors attempt to read from or write to a location in shared memory in the same clock cycle.
A condition arising when two or more data stations attempt to transmit at the same time using the same link or channel.
A method of line control in which the terminals request permission to transmit. If the channel in question is free, transmission proceeds; if it is not free, the terminal will have to wait until it becomes free. A computer can build up a queue of contention requests; this queue can be organized in a prearranged sequence or in the sequence in which requests are made.
In the database manager, a situation in which a transaction attempts to lock a row or table that is already locked.