>> * Is a string pointer often longer than a byte? >> > Always. I have got doubts for this specific information. > (Which up to now I thought was basic programming knowledge...) By the way: Run time environments still exist where the size of a pointer can be also just one byte, don't they? >> How many results would we like to clarify from various hardware >> and software combinations? >> > See above. At the moment _any_ test result from your side would do. I imagine that another single result might not be representative. How many lessons from test statistics will usually be also relevant here? >> How important are the mentioned functions for you within the Linux >> programming interface so far? >> > Not very. The interface is only used in a slow path, and the execution > time doesn't affect I/O performance in any way. Thanks for another interesting information. >>> Case in point: with your patch the x86_64 compiler generates nearly >>> identical code for driver/md/raid1.c, but with one instruction _more_ >>> after your patch has been applied. >> >> Which software versions and command parameters did you try out >> for this information (from an unspecified run time environment)? >> > # gcc --version > gcc (SUSE Linux) 4.8.5 Thanks for this detail. * Did you choose any special optimisation settings for your quick check? * Will any compilation results matter if "optimisation" would be switched off there? > I'm still waiting from results from your side. Would any other software developers or testers dare to add related information? Regards, Markus -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
