Ingo Molnar wrote: > that alone is already ~100-200 cycles overhead, it essentially doubles > the null syscall overhead. It matters at millions of syscalls per second > workloads, 100 cycles overhead at 1 million syscalls a second means 5% > performance difference at 2GHz.
Plus, x86-64 uses only syscall which doesn't have the opportunity to be intercepted in ring 1, right? That's the much more important target going forward. -- ➧ Ulrich Drepper ➧ Red Hat, Inc. ➧ 444 Castro St ➧ Mountain View, CA ❖
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