On Sat, 23 Feb 2008 13:51:34 +0200 "Pekka Enberg" <[EMAIL PROTECTED]> wrote:
> On Sat, Feb 23, 2008 at 10:11 AM, Andrew Morton > <[EMAIL PROTECTED]> wrote: > > Seems a poor idea to me. Sure, oprofile is "hard to set up", but not if > > your distributor already did it for you. > > Have you tried sysprof? It's really nice to setup and use compared to > oprofile when profiling user-space. Wanna see how I use oprofile? box:/home/akpm> akpm-oprofile gcc t.c Daemon not running Daemon not running Using 2.6+ OProfile kernel interface. Reading module info. Using log file /var/lib/oprofile/oprofiled.log Daemon started. Profiler running. t.c:6:12: error: token ""x"" is not valid in preprocessor expressions real 0m0.262s user 0m0.004s sys 0m0.004s Stopping profiling. Stopping profiling. Killing daemon. CPU: CPU with timer interrupt, speed 0 MHz (estimated) Profiling through timer interrupt samples % symbol name 625 99.2063 mwait_idle 1 0.1587 __handle_mm_fault 1 0.1587 clear_page 1 0.1587 do_page_fault 1 0.1587 flush_tlb_page 1 0.1587 pfn_valid box:/home/akpm> One thirteen-character command! Why? Because I actually got off my butt and wrote a script to hide low-level details. I wrote the thing five years ago and don't remember anything about what's in it. I didn't need to write a new kernel module to enable that thirteen-character shell script, and I don't believe one needs to write a new kernel module to put a nice easy-to-use GUI around oprofile either. This is one of those i-cant-believe-im-having-this-discussion discussions. -- 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/
