4 ms·
What does it do, then? That is approximately what the mitigation patch does, according to early averages of perf changes.
by cjbprime 9y ago
What does it do, then? That is approximately what the mitigation patch does, according to early averages of perf changes.
- Choco31415 9y agoPerformance is chopped 5-30%, with newer CPU's with PCID being affected less significantly. [0] BoorishBears is possibly pointing out that 30% is a worst case. [0]: https://www.phoronix.com/scan.php?page=article&item=linux-415-x86pti&num=1 https://www.phoronix.com/scan.php?page=article&item=linux-41...
- BoorishBears 9y agoThis combined with what the other comment mentions, it's a range from 5%-30% with 30% being a worst case the average user does not encounter. This is an issue, but laypeople are overblowing the effect on their everyday computing.
- BuckRogers 9y agoWhat about gaming performance? Once everything is patched[0], that is. I know no one knows, but it'll be interesting to see Intel's last remaining advantage (clock frequency) mitigated somewhat by all of this. [0]https://gist.github.com/woachk/2f86755260f2fee1baf71c90cd6533e9 https://gist.github.com/woachk/2f86755260f2fee1baf71c90cd653...
- colanderman 9y agoSyscall-heavy workloads are affected to a much greater degree than CPU-heavy workloads. (This is a direct consequence of the fact that the workaround involves a per-syscall overhead.)