context switching

Before changing this, make sure you run vmstat enough to determine that there really is a considerable amount of context switching going on.

Note that context switching on the front- end server does not grow significantly as processor usage increases .

However, we had to be careful because, as you increase this number, context switching also increases.

With its 1ms interrupt timing and context switching on a per channel basis, it is simply not capable of scaling to large systems.

The topics in this section provide information to help you understand and implement context switching in modules and sessions .

Operating systems can generally switch (context switching) faster between threads of the same process than between different process.

The approaches for the optimization of the scheduling algorithm consist of lazy scheduling and direct context switching.

Context switching between threads involves saving and restoring the state of threads.

Many families of microcontrollers and embedded processors have multiple register banks to allow quick context switching for interrupts.

The context switching tokens, {) and (}, are used to switch the query from XML construction to query evaluation.

Increasing the time slice might improve system throughput, due to reduced context switching.

And if each thread (ergo network connection) is busy, then the context switching to each thread can be significant.

modern operating systems generally do an excellent job of process scheduling , which minimizes context switching.

Increasing the time slice can improve system throughput due to reduced context switching.

If set too high, CPU cycles are wasted on context switching among the threads.

For more information about context switching, see Understanding Context Switching.

The following figure shows how context switching begins to level off on a two-processor front-end server as processor usage increases.

For more information about implicit context switching, see Using EXECUTE AS in Modules.

This is true if there is no context switching or if the impersonation is at the server level.

The connection concentrator is associated with context switching of agents.

The braces act as context-switching tokens and switch the query from XML construction to query evaluation.

TSS holds hardware context information for each CPU which helps to take effect in context switching.

For more information about context switching, see Context Switching.

The CPU simply becomes overburdened by context switching between threads.

Rather, all protothreads run on the same stack and context switching is done by stack rewinding .

For more information, see the Security Tutorial, Ownership Chains and Context Switching.

Context Switching, is defined as changing focus and attention from one task to the other in relatively short periods of time.

Indeed, too many threads will even degrade performance because of the additional context switching overhead.

The scope of database-level impersonation is the same as that previously defined in "Explicit Database-Level Context Switching. "

This is most likely due to the cost of context switching between so many threads.

The scope of server-level impersonation is the same as that previously defined in "Explicit Server-Level Context Switching. "

One can look at the context switching using either the vmstat or sar commands.

The amazing thing is that, at one level, it's totally obvious what causes excessive context switching.

Thread context switching is NOT expensive