Performance loss up to 39%, Intel Downfall mitigation patch test report released

According to news from this site on August 12, according to a preliminary test report released by foreign technology media phoronix, after deploying Intel Downfall mitigation patches, performance can be lost by up to 39%. The media evaluated three processors: Intel Xeon Platinum 8380 (Ice Lake), Xeon Gold 6226R (Cascade Lake), and consumer Core i7-1165G7 (Tiger) to evaluate the performance difference before and after deploying the mitigation patch.

Source: Christian Wiediger /unsplash.com After testing with Intel Neural Magic DeepSparse 1.5, Tencent NCNN AI platform, and QMCPACK system, the performance dropped by an average of 17%.
The Intel Xeon Gold 6226R suffered a maximum performance loss of 33% in the OSPRay 2.12 test and a maximum performance loss of 20% in the Neural Magic DeepSparse 1.5 test.
Intel consumer Core i7-1165G7 has an 11% performance drop in the OpenVLK 1.3.1 test and a 19% to 39% performance drop in the OSPRay 2.12 test. fenye

In addition to the application and deployment of AVX2 and AVX-512 instruction sets in AI and HPC scenarios, the above instruction sets are also used in regular tasks such as video encoding.

Given that the cost for hackers to exploit this vulnerability is relatively high and the operation is complicated, consumers need to judge whether it is necessary to install this mitigation patch based on their own circumstances.

This website attaches a link to the original text of the test, and interested users can read it in depth.

Related reading:

"Downfall vulnerability exposed: affecting Intel Skylake to Ice Lake family processors, can steal sensitive data"

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