Spectre, Meltdown patches causing problems in newer chips, admits Intel
- Author: Desiree Holland Jan 19, 2018,
Jan 19, 2018, 1:42
"As part of this, we have determined that similar behaviour occurs on other products in some configurations, including Ivy Bridge-, Sandy Bridge-, Skylake-, and Kaby Lake-based platforms", Shenoy says.
"We have now issued firmware updates for 90 percent of Intel CPUs introduced in the past five years, but we have more work to do", Intel vice president Navin Shenoy wrote in a company blog post. We don't know when an official patch for the problem will be launched, but Intel says it will be delivering microcode to its vendor partners for validation next week. On Jan. 11, Intel confirmed that some older Intel CPUs - specifically, Broadwell and Haswell - that had been updated with Intel's Meltdown and Spectre firmware patches were rebooting more frequently than they should be (see Spectre Reversal: AMD Confirms Chips Have Flaws). Hopefully a streamlined fix without these issues will emerge pretty soon after vendor testing is done next week, although Intel doesn't recommend that folks wait before patching, given the seriousness of these bugs.
This means AMD might not have been as secure as it had been claiming since the Meltdown and Spectre issue blew up for Intel. The company tested Linpack, Stream, server-side Java, and raw integer and floating-point throughput-tests that it says are representative of common workloads for enterprise and cloud customers. Another test that simulated online transactions at a stock brokerage showed a 4 per cent slowdown, the company said.More news: Gross calls bond bear market after Japan shock
The benchmark results reported above may need to be revised as additional testing is conducted.
With low processor stress, there was no performance impact with patched systems, but CPU utilisation increased compared to unpatched servers. This refers particularly to the Storage Performance Development Kit (SDK) which "provide a set of tools and libraries for writing high performance, scalable, user-mode storage applications". Using SPDK vHost, there was no impact.
Advanced Micro Devices (AMD) is not as insulated from the recent central processing unit (CPU) security flaw debacle, as the CPU manufacturer is now facing two class action lawsuits like its competitor Intel.