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系统级性能优化通常包括两个阶段：性能剖析（performance profiling）和代码优化。 性能剖析的目标是寻找性能瓶颈，查找引发性能问题的原因及热点代码。 代码优化的目标是针对具体性能问题而优化代码或编译选项，以改善软件性能。 在性能剖析阶段，需要借助 ...

KDAB, a German consulting firm that develops graphics and visualization tools, has released Hotspot 1.0, a GUI too for visualizing performance data generated by the Linux perf tool. Perf analyzes ...

With the first rumblings of Meltdown and Spectre malware appearing, it's time to patch our systems against these CPU vulnerabilities. We know these patches will slow our systems down, but, for Linux ...

Tuning Linux systems for performance is an essential task for any system administrator, but it also is one of the least documented. Without a hard-won understanding, performance tuning often can seem ...

Twice a year, a group of scientists in Europe and the United States release a list of the world's 500 most powerful computing systems. The Top 500 list is the most prestigious ranking of its kind, ...

At only a few years old, Clear Linux hasn’t been around long enough to start appearing in top-ten distro lists all over, but it’s an OS that offers enough uniqueness to warrant a fair look. At a basic ...

I've been doing some work lately evaluating various Linux desktop environments on low-end hardware. I've put a lot of time into this and I've gotten some interesting results, so I thought I'd share ...

It’s been nearly a year since we last took an in-depth look at viewport performance with the help of SPEC’s SPECviewperf, and with the recent release of its 2020 v3.1 update, we felt now was a good ...