4 ms·
My experience was different. My laptop boots in half the time with these mitigations disabled, and is noticeably much faster to use.
by irthomasthomas 7y ago
My experience was different. My laptop boots in half the time with these mitigations disabled, and is noticeably much faster to use.
- asdfasgasdgasdg 7y agoThat's weird. I don't think anyone has measured these mitigations at a 50% perf hit even on crafted workloads. I wonder if something else is going on.
- lallysingh 7y ago15% of pure cpu, but that doesn't take the consequences of the CPU improvement in other systems (e.g. crypto fs leading to higher iop rates, etc).
- ogre_codes 7y agoRunning insecure performance enhancing kernel mods to speed up crypto fs.... It's a self defeating performance tip!
- lallysingh 7y agoTBH there's different threat models there. A crypto fs makes sense if you're worried about a box getting stolen, while spectre/etc aren't a concern if you're running regular userland stuff on a single-user box.