> Hi Joakim, > > On Sat, Apr 23, 2005 at 07:23:51PM +0200, Joakim Tjernlund wrote: > > > Now, what is the best way to bring the performance back to v2.4 levels? > > > > > > For this "dd" test, which is dominated by "sys_read/sys_write", I thought > > > of trying to bring the hotpath functions into the same pages, thus > > > decreasing the number of page translations required for such tasks. > > > > > > Comments are appreciated > > > > Does CONFIG_PIN_TLB make a difference? > > No it does not.
hmm, strange. I would expect the kernel ITLB Misses to be zero and the kernel DTLB Misses be a lot smaller. Have any numbers handy? Jocke
