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| From: | P Levine <plevine457@×××××.com> |
|---|---|
| To: | gentoo-user@l.g.o |
| Subject: | [gentoo-user] Expect a ~15% average slowdown if you use an Intel processor |
| Date: | Thu, 04 Jan 2018 03:16:14 |
| Message-Id: | CADX8ZBLJttMUsScnOk8jVUp_f0SvT_iLebGQmXjWK9gsO=DK8Q@mail.gmail.com |
| 1 | I'm not sure if it's been mentioned here before but there apparently is a |
| 2 | bug affecting all Intel CPUs manufactured in the last 10 years or so, in |
| 3 | which protected kernel memory is leaked to userspace. It can't be patched |
| 4 | in microcode and will lead to some serious overhead to patch in the OS. |
| 5 | See, Huge Intel CPU Bug Allegedly Causes Kernel Memory Vulnerability With |
| 6 | Up To 30% Performance Hit In Windows And Linux |
| 7 | <https://hothardware.com/news/intel-cpu-bug-kernel-memory-isolation-linux-windows-macos> |
| 8 | and Meltdown and Spectre <https://meltdownattack.com/>. |
| 9 | |
| 10 | Reported at Bug 643360 <https://bugs.gentoo.org/643360>. |
| Subject | Author |
|---|---|
| Re: [gentoo-user] Expect a ~15% average slowdown if you use an Intel processor | Adam Carter <adamcarter3@×××××.com> |