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In Windows NT operating systems, the System Idle Process contains one or more kernel threads which run when no other runnable thread can be scheduled on a CPU. In a multiprocessor system, there is one idle thread associated with each CPU core. For a system with hyperthreading enabled, there is an idle thread for each logical processor.
Since 99% of the servers don't need the flexibility of Apache, OpenBSD's httpd will work fine, be more secure, and probably faster". [79] He characterized the developer community's attitude to components as: "When the community decides that some module sucks, they develop a new one from scratch.
During real-time computing of applications, fragmentation levels can reach as high as 99%, and may lead to system crashes or other instabilities. [citation needed] This type of system crash can be difficult to avoid, as it is impossible to anticipate the critical rise in levels of memory fragmentation. However, while it may not be possible for ...
Uptime is a measure of system reliability, expressed as the period of time a machine, typically a computer, has been continuously working and available.Uptime is the opposite of downtime.
When high-powered GPUs were first introduced, typical ATX power supplies were "5 V-heavy", and could only supply 50–60% of their output in the form of 12 V power. Thus, GPU manufacturers, to ensure 200–250 W of 12 V power (peak load, CPU+GPU), recommended power supplies of 500–600 W or higher.
There are three main purposes that an operating system fulfills: [10] Operating systems allocate resources between different applications, deciding when they will receive central processing unit (CPU) time or space in memory. [10] On modern personal computers, users often want to run several applications at once.
In the context of free and open-source software, proprietary software only available as a binary executable is referred to as a blob or binary blob.The term usually refers to a device driver module loaded into the kernel of an open-source operating system, and is sometimes also applied to code running outside the kernel, such as system firmware images, microcode updates, or userland programs.
Rewriting sections "pays off" in these circumstances because of a general "rule of thumb" known as the 90/10 law, which states that 90% of the time is spent in 10% of the code, and only 10% of the time in the remaining 90% of the code. So, putting intellectual effort into optimizing just a small part of the program can have a huge effect on the ...