HSR6800 Comware7 problems

[KreizO]

We are experiencing odd behavior of router FIP-310 cards. If we recieve something like ~100kpps of TCP or UDP packets to single IP address from different sources(DDOS), FIP card uses all of its memory and we get:

%%10DLOG/5/FIP: FIP_3_RESET : On# 

It seems that router card's memory is used by cache/buffers:

normal state:

Slot 2:
Total Used Free Shared Buffers Cached FreeRatio
Mem: 3816740 2231764 1584976 0 0 65064 41.5%
-/+ Buffers/Cache: 2166700 1650040
Swap: 0 0 0

DDOS state:

Slot 2:
Total Used Free Shared Buffers Cached FreeRatio
Mem: 3816740 2869068 947672 0 0 65064 24.8%
-/+ Buffers/Cache: 2804004 1012736
Swap: 0 0 0

Is the any way to see whats causing whis? And is the any way to disable/see CONNTRAC table?