最慢 x86 指令“耻辱榜”：fxrstor64 单次执行 62 秒创纪录，相当于 1980 亿个 CPU 周期
研究人员发起 CPU 反优化实验，寻找执行最慢的单条 x86 指令，目前 fxrstor64 单次执行耗时约 62 秒，相当于 1980 亿个 CPU 周期，未来还计划拓展 ARM、RISC-V 榜单。#CPU研究#
https://www.ithome.com/0/987/425.htm #Christopher Domas #x86 #CPU
IT之家
npub1kx…2nkgr
2026-08-08 11:29:53 UTC
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npub1kx2trfca7zg9la28a5v9k652rdyfwrfnv3g7nwlsfglxmk32gxfqd2nkgrPublished at
2026-08-08 11:29:53 UTCEvent JSON
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"content": "最慢 x86 指令“耻辱榜”：fxrstor64 单次执行 62 秒创纪录，相当于 1980 亿个 CPU 周期\n\n研究人员发起 CPU 反优化实验，寻找执行最慢的单条 x86 指令，目前 fxrstor64 单次执行耗时约 62 秒，相当于 1980 亿个 CPU 周期，未来还计划拓展 ARM、RISC-V 榜单。#CPU研究#\n\nhttps://www.ithome.com/0/987/425.htm #Christopher Domas #x86 #CPU",
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