On Mon, 2007-01-29 at 20:45 -0800, Andrew Morton wrote: > Temporarily at > > http://userweb.kernel.org/~akpm/2.6.20-rc6-mm3/ > > Will appear later at > > > ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.20-rc6/2.6.20-rc6-mm3/ >
I was running likely profiling and I noticed that when I turn on the "tickless" option I get the following line, +unlikely | 21111208| 9367278 need_resched()@:include/linux/[EMAIL PROTECTED] This means that this line is 21111208 true, and 9367278 false. This existed on bootup, and stayed after about 7 hours of runtime (mostly idle). Since need_resched is a "static inline" there are multiple instances of need_resched() in the kernel. If I turn off the "tickless" feature this wrong unlikely disappears, and the output looks like this, unlikely | 0| 169 need_resched()@:include/linux/[EMAIL PROTECTED] unlikely | 0| 94 need_resched()@:include/linux/[EMAIL PROTECTED] unlikely | 0| 63 need_resched()@:include/linux/[EMAIL PROTECTED] unlikely | 0| 19 need_resched()@:include/linux/[EMAIL PROTECTED] unlikely | 0| 379 need_resched()@:include/linux/[EMAIL PROTECTED] unlikely | 1| 202596 need_resched()@:include/linux/[EMAIL PROTECTED] unlikely | 7| 205929 need_resched()@:include/linux/[EMAIL PROTECTED] unlikely | 6461| 271690 need_resched()@:include/linux/[EMAIL PROTECTED] Only a little after boot. I suppose this could be a natural side effect of the tickless feature but I thought I would report it anyway. Daniel - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
