Buzz
Google provides chip manufacturers with essential information. In a post on the company's Online Security Blog, two Google engineers detail the chip bug fix deployed across the company's entire infrastructure, resulting in a slight decrease in performance. The company also shares additional details about a new technique called ReptOnline, hoping other companies can adopt this technology.
CPU bug fix has negligible impact on device performance
There have been many opinions suggesting that implementing KPTI significantly impacts device performance,” according to the post. Additionally, the post discusses the company's Kernel Page Table Isolation technique. “Performance may vary, as the impact of KPTI depends on the speed of system calls made by applications. In most of our workloads, including cloud infrastructure, we find the performance impact to be negligible.”
This information is particularly crucial for Google Cloud, as some users believe that cloud services are the most vulnerable to processing issues. According to the post, the ReptOnline technique has been deployed on the system and has a negligible impact on device speed.
“Of course, Google advises you to thoroughly test in your environment before deployment.” “We cannot guarantee any specific activities or impacts affecting performance.”
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This assessment aligns with Intel's initial reports, stating that device performance slowdown depends on workload, and it is negligible. However, Intel also notes that depending on the application running on Windows, system performance may be affected more or less. Some initial benchmarks indicate a performance decrease of up to 17%.
Recently, Intel also declared the deployment of chip bug fixes to counter new attacks, claiming the operational impact to be insignificant. It's challenging to confirm the claims of both Google and Intel until the fixes are deployed. Importantly, Google has also collaborated with chip manufacturers, reporting a marginal decrease in performance.
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Notably, the new technique only applies to one of the three variants related to new attacks. However, it is considered the most challenging variant to handle. The other two vulnerabilities, 'bounds check bypass' and 'rogue data cache load,' will be addressed at the program and corresponding operating system levels and promise not to reduce system performance.
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