I have enabled following on config.h
During performance test, we could see 2ms delay in operation. Am working on embedded platform, and I could not analyze CPU load/usage after enabling them. Would like your recommendation. The target platform is powered by AT91SAM9 family.
On SHA, could not find any difference, with & without flag enabled, our HMAC-SHA256 operation takes only 1ms. However, the AES-GCM-256(msg size less than 1k byte) encrypt takes 4 ms without fewer_tables(commented) and 6 ms with fewer_tables(un-commented).
As it is kind of embedded platform I am sure about CPU load. Could help us by providing any approximate figure CPU usage impact or Is there any benchmark available for arm91 processor for this operation, that would be useful as supportive document for recommending this change to development.