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Re:Linux page table isolation is not needed on AMD processors by lmm on Tuesday January 02, 2018 @11:38AM (#16052977)
Databases are already written to minimise syscalls, like any other heavily performance-tuned system.
Re:Linux page table isolation is not needed on AMD processors by amadvance on Wednesday January 03, 2018 @03:32AM (#16059421)
Applications that already put an effort to minimize syscalls are the ones that most likely depend on syscalls performance.
Re:Linux page table isolation is not needed on AMD processors by lmm on Wednesday January 03, 2018 @03:51AM (#16059497)
Unlikely. It's relatively easy to get to the point where syscalls aren't the bottleneck by a long margin, so the only apps where syscalls are the bottleneck will be those that haven't put in any optimisation effort.