[TF-M] Re: psa_call performance

Hi Brian,

Thanks a lot for the clarification.

Best regards, Hu Ziji

From: Quach, Brian brian@ti.com Sent: Friday, May 5, 2023 12:09 AM To: David Hu David.Hu@arm.com; Jamie Fox Jamie.Fox@arm.com; Ken Liu Ken.Liu@arm.com; tf-m@lists.trustedfirmware.org Cc: nd nd@arm.com Subject: RE: psa_call performance

Hi David,

I was using isolation level 1 for all so the latest performance figures should be correct:

-DTFM_PROFILE=profile_medium \ -DTFM_ISOLATION_LEVEL=1 \ -DCMAKE_BUILD_TYPE=Release \

Regards, Brian

From: David Hu <David.Hu@arm.commailto:David.Hu@arm.com> Sent: Thursday, May 4, 2023 12:46 AM To: Quach, Brian <brian@ti.commailto:brian@ti.com>; Jamie Fox <Jamie.Fox@arm.commailto:Jamie.Fox@arm.com>; Ken Liu <Ken.Liu@arm.commailto:Ken.Liu@arm.com>; tf-m@lists.trustedfirmware.orgmailto:tf-m@lists.trustedfirmware.org Cc: nd <nd@arm.commailto:nd@arm.com> Subject: [EXTERNAL] RE: psa_call performance

Hi Brian,

Thanks for the profiling data.

Please also note that CoreIPC selected Isolation level 1 while Profile Medium selects Isolation level 2. It will also impact the performance.

RelWithDebInfo was still supported in TF-M v1.7.0. It is not assigned a dedicated build type config file but it should not affect the build. Can you please take another try?

Best regards, Hu Ziji

From: Quach, Brian via TF-M <tf-m@lists.trustedfirmware.orgmailto:tf-m@lists.trustedfirmware.org> Sent: Wednesday, May 3, 2023 3:26 AM To: Jamie Fox <Jamie.Fox@arm.commailto:Jamie.Fox@arm.com>; Ken Liu <Ken.Liu@arm.commailto:Ken.Liu@arm.com>; tf-m@lists.trustedfirmware.orgmailto:tf-m@lists.trustedfirmware.org Cc: nd <nd@arm.commailto:nd@arm.com> Subject: [TF-M] Re: psa_call performance

Thanks for spotting that Jamie! That fixed my issue. I was using "RelWithDebInfo" in v1.1 and changed to "Debug" for v1.7 since RelWithDebInfo was no longer an option. Call times are all improved in v1.7 over v1.1 as expected when using "Release" build type.

V1.8 is a bit worse than V1.7 though.

Psa_connect() call time in cycles: TF-M version Psa_connect() in cycles 1.1 3406 1.7 2872 1.8 3130

Psa_version() call time in cycles: TF-M version Psa_version() in cycles 1.1 343 1.7 389 1.8 500

Psa_call() call time in cycles: 1 invec, 3 outvec TF-M version Psa_call() in cycles 1.1 4406 1.7 3404 1.8 3722

Regards, Brian

From: Jamie Fox <Jamie.Fox@arm.commailto:Jamie.Fox@arm.com> Sent: Tuesday, May 2, 2023 11:09 AM To: Quach, Brian <brian@ti.commailto:brian@ti.com>; Ken Liu <Ken.Liu@arm.commailto:Ken.Liu@arm.com>; tf-m@lists.trustedfirmware.orgmailto:tf-m@lists.trustedfirmware.org Cc: nd <nd@arm.commailto:nd@arm.com> Subject: [EXTERNAL] RE: psa_call performance

Hi Brian,

I think the old ConfigCoreIPC is broadly similar to medium profile with isolation level set to 1. But I noticed in your v1.1 build logs that it is being built with optimization at -O3, whereas in v1.7 you have -DCMAKE_BUILD_TYPE=Debug which implies -O0. If you change the v1.7 build type to -DCMAKE_BUILD_TYPE=Release then that will get you an optimized -O3 build comparable to the v1.1 one.

Kind regards, Jamie