Linux Kernel News
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Performance analysis in Linux
Dynamic profilers are tools to collect data statistics about applications while they are running, with minimal intrusion on the application being observed.
The kind of data that can be collected by profilers varies deeply, depending on the requirements of the user. For instance, one may be interested in the amount of memory used by a specific application, or maybe the number of cycles the program executed, or even how long the CPU was stuck waiting for data to be fetched from the disks. All this information is valuable when tracking performance issues, allowing the programmer to identify bottlenecks in the code, or even to learn how to tune an application to a specific environment or workload.
In fact, maximizing performance or even understanding what is slowing down your application is a real challenge on modern computer systems. A modern CPU carries so many hardware techniques to optimize performance for the most common usage case, that if an application doesn't intentionally exploit them, or worse, if it accidentally lies in the special uncommon case, it may end up experiencing terrible results without doing anything apparently wrong.
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New Corsair Mice & Keyboards Supported By The Linux 4.11 Kernel
Coming in late to the Linux 4.11 kernel are support for a few more Corsair gaming peripherals.
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