Is RSA2048 signs/second a good measure of CPU core…
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Is RSA2048 signs/second a good measure of CPU core performance?
I've been reading up on ARM core architectures for the past few days, and I wanted to see just how wide the gap between efficiency, power, and prime cores really are on Android phones. I am dissatisfied by the tendency of common benchmarking apps to simply use the OS CPU scheduler to assign work to a CPU core. I want the ability to assign the benchmarking load to a specific core so that I can see the performance delta of the different cores. Just doing some cursory research, I stumbled upon openssl in termux and ran some tests using this command:
`taskset -c C openssl speed -elapsed -seconds 5 rsa2048`
C is the CPU core ID. The following is what I found:
|CPU Core|RSA2048 Sign Speed (signs/s)|
|:-|:-|
|Pixel 7 Pro Cortex-A55 (CPU0)|161.2|
|Pixel 7 Pro Cortex-A78 (CPU 4)|897.6|
|Pixel 7 Pro Cortex-X1 (CPU 6)|1136.8|
|Galaxy A51515U Cortex-A53 (CPU 0)|150.4|
|Galaxy A51515U Cortex-A73 (CPU4)|248.8|
At first glance, these results seem right to me. The more powerful cores are able to sign much faster. But my question is: is sign speed even a good measure of CPU core performance? Do these results actually mean anything?
#hardware #technology
source
I've been reading up on ARM core architectures for the past few days, and I wanted to see just how wide the gap between efficiency, power, and prime cores really are on Android phones. I am dissatisfied by the tendency of common benchmarking apps to simply use the OS CPU scheduler to assign work to a CPU core. I want the ability to assign the benchmarking load to a specific core so that I can see the performance delta of the different cores. Just doing some cursory research, I stumbled upon openssl in termux and ran some tests using this command:
`taskset -c C openssl speed -elapsed -seconds 5 rsa2048`
C is the CPU core ID. The following is what I found:
|CPU Core|RSA2048 Sign Speed (signs/s)|
|:-|:-|
|Pixel 7 Pro Cortex-A55 (CPU0)|161.2|
|Pixel 7 Pro Cortex-A78 (CPU 4)|897.6|
|Pixel 7 Pro Cortex-X1 (CPU 6)|1136.8|
|Galaxy A51515U Cortex-A53 (CPU 0)|150.4|
|Galaxy A51515U Cortex-A73 (CPU4)|248.8|
At first glance, these results seem right to me. The more powerful cores are able to sign much faster. But my question is: is sign speed even a good measure of CPU core performance? Do these results actually mean anything?
#hardware #technology
source
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