Server mostly caching-only + acache

[yata at irc.pl]

Hello,

I use BIND 9.3.5-P2.

I think to change to version 9.4.3 because of interesing feature
"acache".
I would like to speed up response time for my clients.

My DNS server is mostly (95%) caching-only:
NLWP USERNAME  SWAP   RSS MEMORY      TIME  CPU
7 named    3294M 3299M    21% 336:00:11  16%

Do you think after "acache-enable yes" bind will create "internal
short-cut" and
response time for client will be reduced?

Regards,
y.