Hi Davide, At the moment I'm looking into writing man pages for timer_create(2) and friends. (Somewhat bizarrely, these pages do not yet exist.) As I looked into the source code of timer_create(), etc., and did some tests, I saw that timer_create() supports the following clocks: TIMER_REALTIME TIMER_MONOTONIC TIMER_PROCESS_CPUTIME_ID TIMER_THREAD_CPUTIME_ID clockid obtained from clock_getcpuclockid(3) clockid obtained from pthread_getcpuclockid(3) On the other hand, timerfd() only permits the first two of these. What's the reason for that limitation of timerfd()? (It may be worth adding something to the man page on this point.) Cheers, Michael -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ git://git.kernel.org/pub/scm/docs/man-pages/man-pages.git man-pages online: http://www.kernel.org/doc/man-pages/online_pages.html Found a bug? http://www.kernel.org/doc/man-pages/reporting_bugs.html -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html