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Digital India can only grow via Open Source

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OSS

The Open Source Initiative is celebrating its 20th Anniversary in 2018 as the term was coined in a session held on February 3rd, 1998 in Palo Alto, California.

In the last 20 years, the initiative has come a long way. Acknowledging the importance of'open source initiative' which continues to play in our lives and to enable open discussion on the challenges that exist and to work out strategies to iron them out, Bharat Exhibition organised an 'Open Source Summit 2018' in New Delhi on February 08, 2018.

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The Spectre/Meltdown Performance Impact On Linux 4.20, Decimating Benchmarks With New STIBP Overhead

As outlined yesterday, significant slowdowns with the Linux 4.20 kernel turned out to be due to the addition of the kernel-side bits for STIBP (Single Thread Indirect Branch Predictors) for cross-HyperThread Spectre Variant Two mitigation. This has incurred significant performance penalties with the STIBP support in its current state with Linux 4.20 Git and is enabled by default at least for Intel systems with up-to-date microcode. Here are some follow-up benchmarks looking at the performance hit with the Linux 4.20 development kernel as well as the overall Spectre and Meltdown mitigation impact on this latest version of the Linux kernel. Some users have said AMD also needs STIBP, but at least with Linux 4.20 Git and the AMD systems I have tested with their up-to-date BIOS/microcode, that hasn't appeared to be the case. Most of the AMD STIBP references date back to January when Spectre/Meltdown first came to light. We'll see in the week ahead if there is any comment from AMD but at this time seems to be affecting up-to-date Intel systems with the Linux 4.20 kernel. Read more

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