Am 29.06.2013 22:23, schrieb Bill Davidsen: > Mateusz Marzantowicz wrote: >> On 28.06.2013 17:21, J.Witvliet@xxxxxxxxx wrote: >>> It surely works, but at a performance price. And the certainty that you have to enter the LUKS-key each time you >>> boot. >> >> Intel Sandy/Ivy Bridge processors and later (AMD also) have something >> called AES-NI which significantly speeds up disk encryption. I haven't >> done any benchmarks but I see no difference between encrypted and plain >> LVM in everyday use. >> > I just discovered that KVM doesn't seem to pass that flag on to virtual machines, which seems like serious suckage. > May be a hardware thing, of course this has nothing to do with the hardware the hardware has AES-NI or has not VMware vSphere passes the flag to the guest cat /proc/cpuinfo | grep aes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts nopl xtopology tsc_reliable nonstop_tsc aperfmperf pni pclmulqdq ssse3 cx16 sse4_1 sse4_2 popcnt aes hypervisor lahf_lm ida arat epb pln pts dtherm
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