kernel coder wrote:
hi,
I'm trying to add some code to netif_receive_skb function in
dev.c file . The cycles consumed by that code was around 16 cycles on
Dual Core Opetron machine.I'm working on that code for last 6 months
now and the consumed cycles have always been around 16 cycles .I don't
touch any other part of kernel .
But for last 4 days the consumed cycles have suddenly increased to
around 35 cycles . I'm using RDTSC instruction to profile the
code.There is no change in code and the kernel version is also the
same .I am assuming that there must be something wrong with hardware.
..
A cache miss ?
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