I've been monitoring squid 2.5 on FreeBSD 5.0 with mrtg for several months.
The MIB is dated 2003/05/02 and defines cacheCpuUsage as "cacheSysPerf 5".
However the retrieved integer nearly always shows up as 0 or 1, even when
top or the cachemgr says squid is consuming 15-20% of the cpu.
At two occasions since november last year mrtg has detected short "peaks" at
~20%, but that's all.
Does anyone know how to fix this?