On 8/31/05, Thomas Petazzoni <thomas.petazzoni@xxxxxxxx> wrote: > Hi, > > Gaurav Dhiman wrote: > > > yes I think, by pipeline he means the instruction cache. > > Nop, I meant "pipeline", which is something different from the I-cache, > see the Wikipédia links I gave in another mail. sorry, I got confused between both. Yes you are right that pipeline is different from instruction cache. On executing any type of jmp instruction, CPU clears its pipeline as well as the instruction cache also, as this does not serve any meaning now because we are jumping different part of the code and CPU need to fill the pipeline and instruction cache again, and that degrades the performance of CPU because it takes some CPU cycles (equient to number of sections in CPU pipeline) to fill to full. > > Sincerly, > > Thomas > -- > Thomas Petazzoni > thomas.petazzoni@xxxxxxxx > > -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
