[htop-general] help interpreting these CPU gauges
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From: Xavier N. <fx...@ha...> - 2012-06-28 15:47:31
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I run htop today in my new MacBook Air 11'', with two i7s (Ivy Bridge) and realized it reports 4 CPUs. People on Twitter pointed out to hyper-threading, and descriptions of that technology focus on being able to run more *threads* on the same core. For example, Intel says[*]: "Intel® Hyper-Threading Technology (Intel® HT Technology)1 uses processor resources more efficiently, enabling multiple threads to run on each core. As a performance feature, Intel HT Technology also increases processor throughput, improving overall performance on threaded software." Therefore, I expected a single-threaded program that forks several processes to saturate only two logical cores. But all the logical cores get busy, see this video: http://www.youtube.com/watch?v=R_HlNhGYVIQ Note the gauges and the percents in the process list. Can you help me interpret that? Xavier [*] http://www.intel.com/content/www/us/en/architecture-and-technology/hyper-threading/hyper-threading-technology.html |