On Tue, 2024-05-21 at 08:33 -0400, James Bottomley wrote: > On Tue, 2024-05-21 at 10:10 +0300, Jarkko Sakkinen wrote: > > This benchmark could be done in user space using /dev/tpm0. > > Let's actually try that. If you have the ibmtss installed, the command > to time primary key generation from userspace on your tpm is > > time tsscreateprimary -hi n -ecc nistp256 > > > And just for chuckles and grins, try it in the owner hierarchy as well > (sometimes slow TPMs cache this) > > time tsscreateprimary -hi o -ecc nistp256 > > And if you have tpm2 tools, the above commands should be: > > time tpm2_createprimary -C n -G ecc256 > time tpm2_createprimary -C o -G ecc256 > > James > > Testing on an arm64 platform I get the following results. hmac disabled: time modprobe tpm_tis_spi real 0m2.776s user 0m0.006s sys 0m0.015s time tpm2_createprimary -C n -G ecc256 real 0m0.686s user 0m0.044s sys 0m0.025s time tpm2_createprimary -C o -G ecc256 real 0m0.638s user 0m0.048s sys 0m0.009s hmac enabled: time modprobe tpm_tis_spi real 8m5.840s user 0m0.005s sys 0m0.018s time tpm2_createprimary -C n -G ecc256 real 5m27.678s user 0m0.059s sys 0m0.009s (after first command) real 0m0.395s user 0m0.040s sys 0m0.015s time tpm2_createprimary -C o -G ecc256 real 0m0.418s user 0m0.049s sys 0m0.009s hmac enabled + patches applied time modprobe tpm_tis_spi real 8m6.663s user 0m0.000s sys 0m0.021s time tpm2_createprimary -C n -G ecc256 real 7m24.662s user 0m0.048s sys 0m0.022s (after first command) real 0m0.395s user 0m0.047s sys 0m0.009s time tpm2_createprimary -C o -G ecc256 real 0m0.404s user 0m0.046s sys 0m0.012s Regards, Vitor Soares
