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Showing results for tags 'meltdown'.
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Oh hey, I updated my Mac Pro with the latest security update from Apple patching the meltdown vulnerability, and now when I try to run a benchmark, the CPU returns a score of 0...anyone else get this? The update changes how the kernel works to prevent anything exploiting kernel memory - I wonder if this is also blocking novabench from testing the CPU? Ignore this - just saw another post about it. A fix is in the works... EDIT - looks like this has been happening for a while, the security update is just a coincidence as I haven't benchmarked in a while. I'll keep waiting for that update ;-)
I am a security researcher and after hearing that "fixes" for the Meltdown and Spectre CPU vulnerabilities could reduce performance I installed Novabench to see if would help me investigate this. (You may see an uptick in downloads from other people thinking the same as me.) The product is easy to install and use, but I was surprised that every time I benchmark my test system the score increases, for no obvious reason. That makes me uncomfortable using this tool for research, but I freely acknowledge that performance testing is not my area of expertise, so could I be missing something? (BTW, if I decide to use Novabench in my work, for example, to produce an article on this topic for our blog (WeLiveSecurity.com) then I will be sure my company buys a commercial license.) Appreciate any light you can shed on this (excuse the pun - derived from your graphics test with the light hitting the storage shed). Stephen Cobb, CISSP