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danielb
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Depending on the workload, and the number of Kernel calls that get done, it could be worse: The impact of this change will vary wildly depending on workload. Applications that are heavily dependent on user programs and which don't call into the kernel often will see very little impact; games, for example, should see very little change. But applications that call into the operating system extensively, typically to perform disk or network operations, can see a much more substantial impact. In synthetic benchmarks that do nothing but make kernel calls, the difference can be substantial, dropping from five million kernel calls per second to two-to-three million. Source: “Meltdown” and “Spectre”: Every modern processor has unfixable security flaws It would be interesting if Progress runs the ATM benchmark tool against these types of patches/fixes, and if so, could they disclose the results of before/after the fix?
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