When Intel and AMD launch new processors, they compare the performance of the new generation processors with the previous one. Among single & multicore performance improvements, they also put a spotlight on the IPC performance improvement. But what exactly is the IPC of a CPU & why CPU manufac...
When I use VTune to analysis which factors affect the performance of a program, I often use a cpu performance counter which named synchronization context switches, for example, if the synchronization context switches go up, the elapsed time of the program will go up. My question is that ...
Using TMA, the high-learning curve associated with each microarchitecture generation is replaced by a structured drill-down that guides the user to true performance limiters. 再来看看具体可以得到的性能瓶颈架构图: 先简要地讲解下这张图,对于我们想要分析的具体应用,我们只需应用TMA方法,将该应用在我们的...
Can multiple program counters exist in a single central processing unit (CPU)? In most general-purpose CPUs, there is typically a single program counter that keeps track of the next instruction to execute. However, there are specialized architectures, such as parallel processors or processors with...
A control bus system transfers information to and from the CPU. I/O modules A PLC receives or senses data from input devices like proximity and photoelectric sensors, keyboards, level meters, timers, counters, console lights, electric motors, and temperature and pressure switches. The concept of...
Amazon CloudWatchprovides system‐wide visibility into resource utilization, application performance, and operational health. It collects and tracks metrics, sends alarm notifications, automatically updates resources that you are monitoring based on the rules that you define, and allows you to monitor your...
that the processor was busy executing. This counter provides a very general measure of how busy the processor is and if this counter is constantly high, say above 90%, then you'll need to use other counters (described below) in order to further determine the root cause of the CPU ...
Advanced timing and triggering functionality on data acquisition devices has often relied on onboard counters and complex signal routing to achieve specialized hardware-timed performance. NI-STC3 technology offers completely independent sample clocks and triggers for each different group of I/O on a mu...
Beginning with NDB 8.0.21, more detailed information about the current state of automatic synchronization than can be obtained from log messages or status variables is provided by two new tables added to the MySQL Performance Schema. The tables are listed here: ndb_sync_pending_objects: Contains...
CPU Performance Counters The feature is new in the Solaris Express 4/04 release. The CPU Performance Counter (CPC) system gives better access to the performance analysis features available on SPARC and x86 processors. The CPC commands, cpustat and cputrack, have enhanced command-line syntax for...