On Fri Sep 6, 2024 at 3:32 PM EEST, Roberto Sassu wrote: > Hi all > > when running the benchmark on my new component, the Integrity Digest > Cache, I ran into a serious performance issue. > > The benchmark is extending a TPM PCR with 12313 entries of the IMA > measurement list, and calculating the time elapsed for the operation. > > Without TPM HMAC: 102.8 seconds > > With TPM HMAC: 1941.71 seconds > > > Do you have already an idea on how to improve the situation?
Some missing details: CPU architecture and TPM chip type. Would be possible to generate off-CPU flame graph? For decent instructions: https://www.singlestore.com/blog/linux-off-cpu-investigation/ You can do post-processing steps "offline" only capture step would need to be done in-target. > > Thanks > > Roberto BR, Jarkko
