Pass-Through MAC low performance

[ahfaris]

I am using pfsense 2.0.1 AMD64 on server DL360 with 8G RAM.
I use the captive portal with Pass-Through MAC property to make clients access the internet.
when the table has 3000 MAC address or less , the internet is very good and the performance of the server is very good.
when the number goes over 3000 gradually then the situation become bad , when it reach 7000 then it will be very bad.
the CPU load is normal , and the Memory load is normal also.
the situation still bad untill i delete all mac addresses from pass-through of captive portal web page .

can you help me please ..

[heper]

i'm not able to provide an answer to your question, but i have a question of my own ….
why are you putting half the planet in your pass-through mac list in the first place?

[ahfaris]

This server provide internet for wireless users in the campus of the university , so i don't need users to put login information every time they try to go online .