speed reduce in using rules to generate keys

[frankcynthia]

what do you mean by "very low speed"? how do you measure it?

I record the run time of the command " ./hashcat64.bin -r ./rules/rockyou-30000.rule --stdout dictionary.txt  >/dev/null"

and i calculated the total number of generated keys(num of rules multiply by num of dictionaries), so i calculated how many keys it can produce in one second. The rate is about 10M/s on my cpu.

In this "--stdout" mode, hashcat only produces new keys, it's rate is  even slower than normal rule-based crack mode, in which it does both key producing and hash cracking. 

The rate in normal rule-based crack mode is about 30MH/s on my cpu.