Latency is the amount of time that it takes for information from your computer to travel to the source. Latency should not be confused with bandwidth, as bandwidth measures how much data you can move in a given period of time, but not necessarily how fast it moves. For example, if I am connected to a computer in the next country, latency measures how long it takes for each letter that I type to travel to the other computer. Latency is important when someone is directly interacting with another computer, as the amount of "lag" between the two computers can make some tasks very difficult (such as editing a file). Bandwidth, on the other hand, is not concerned with latency. When downloading a large file, it may be perfectly acceptable to have a 3-4 second wait before the file begins to download.
Networking latency is the time it takes for a single packet to go from your computer, to another host and back. Latency is generally measured in milliseconds. You can check the latency (also referred to as lag) by opening a command prompt and typing "ping
Example: ping www.Google.com
Latency varies based on many factors, such as physical distance to the host, network congestion, and quality of the connection. In a LAN environment latency to another LAN host is generally < 1ms
Over the internet, via a good Internet connection, 30 - 80ms is typical to a server located in the same country (at least in the United States). Lower latency is always better.
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Another name for propagation delay is latency.
FPGA Spartan is more efficient than the microcontroller. It is used to perform operations that cannot be properly done by microcontrollers; operations like high parallel or low latency operation.
-XX:+UseParallelGC (aka "Parallel Scavenge") is a collector for the new generation portion of the heap (eden and survivor spaces) which splits work between many threads; it can work with either the serial old generation collector (which is the default) or the parallel old generation collector (which does the same thing +UseParallelGC does, just for the old/tenured generation.) It cannot be used with the CMS (concurrent mark sweep) low-latency collecto. -XX:+UseParNewGC is the same as UseParallelGC except that it's compatible with the CMS (concurrent mark sweep) low-latency collector (but it cannot be used with the Parallel Old collector.)
The 8086/8088 instruction queue is a buffer that holds opcode bytes that have been prefetched by the bus interface unit. This speeds up operations of the processor by helping to reduce fetch latency, i.e. to improve the probability that an opcode byte fetched by the processor is already available.
The Value Object pattern provides the best way to exchange data across tiers or system boundaries, especially when there is network communication involved. This is a pattern that solves performance issues around network latency This pattern is an object that encapsulates a set of values that is moved across the boundary so that attempts to get the values of those attributes are local calls.