![]() ![]() It also provides a comprehensive list of Windows client and server resources to help keep your devices protected at home, at work, and across your enterprise. This article provides information and updates for a new class of silicon-based microarchitectural and speculative execution side-channel vulnerabilities that affect many modern processors and operating systems. Removed a duplicated topic titled "Intel microcode updates" in the "Steps to help protect your Windows devices" section Regarding ARM, Apple patched iOS in December and said they did not notice a measurable impact in performance across multiple benchmarks.Removed content about CVE-2022-23816 as the CVE number is unused It is advisable for companies to benchmark their own applications to see if performance is affected much and decide if something needs to be done about it.ĪMD said only Variant 1 of the vulnerability can affect their processors with minimal performance impact. Results vary much based on the benchmark, the processor and the mitigation used. 5-10% performance hit for web applications running in Edge or IE.Even better results for 3DMark Sky Diver with negligible performance impact of 0-1%.There are better results for PCMark 10 across all systems tested, around 1-5%.Up to 21% on SYSMark 2014 on Windows 7-10 on Skylake.SYSMark 2014 benchmarks usage patterns of business office, media creation and financial analysis applications 2-14% performance hit for SYSMark 2014 on Windows 10/Coffee Lake/Kaby Lake processors.For a complete description of the findings, the hardware, OS and benchmarks used for testing, we recommend reading the benchmark table (PDF) made available. Now they have published their benchmark results, some of the most comprehensive so far. Intel has been criticized for not providing data on how the Meltdown and Spectre fixes are affecting the performance of their CPUs. 8-19% for applications with high kernel-to-user space transitions.Applications running on the Java VM fall in this category 3-7% for applications with “significant sequential disk or network traffic”.2-5% for CPU intensive jobs that usually run in user space.Red Hat has conducted their own set of tests on Linux machines and have concluded the following: Among the latter are a few editions of Windows Server 2008/2012 and Windows Embedded 8. Regarding the 45 editions of Windows that Microsoft is supporting at this time, the process of patching has been started for 41 one of them through the Windows Update channel, and the other four are to be updated soon. There is a “significant performance impact“ for Windows Server applications on any processor, especially I/O intensive ones.There is a noticeable performance decrease for Windows 7/8/10 for desktop users with Intel Haswell or older CPU.There is insignificant performance impact on Windows 10 for desktop users with Intel Skylake, Kabylake or newer CPU. ![]() In their benchmark tests Microsoft has concluded that “Variant 1 and Variant 3 mitigations have minimal performance impact, while Variant 2 remediation, including OS and microcode, has a performance impact.” Without providing numbers, they further detailed their finding as follows: There are a total of three variants for Spectre and Meltdown, two for Spectre (Variant 1 and 2) and one for Meltdown (Variant 3). Microsoft, Red Hat and Intel have published their performance evaluation of the impact Meltdown and Spectre mitigation has on various systems. ![]()
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