On Mon, Aug 8, 2011 at 06:15, Leonid Evdokimov <l...@darkk.net.ru> wrote:
> 2.6.24 result is really surprising me. > Maybe you forgot the CPU not the same: $ dmesg | grep GHz [ 0.056379] CPU0: Intel(R) Xeon(TM) CPU 3.20GHz stepping 04 [ 0.144076] CPU1: Intel(R) Xeon(TM) CPU 3.20GHz stepping 04 [ 0.240057] CPU2: Intel(R) Xeon(TM) CPU 3.20GHz stepping 04 [ 0.336144] CPU3: Intel(R) Xeon(TM) CPU 3.20GHz stepping 04 [ 0.432148] CPU4: Intel(R) Xeon(TM) CPU 3.20GHz stepping 04 [ 0.528083] CPU5: Intel(R) Xeon(TM) CPU 3.20GHz stepping 04 [ 0.620103] CPU6: Intel(R) Xeon(TM) CPU 3.20GHz stepping 04 [ 0.712116] CPU7: Intel(R) Xeon(TM) CPU 3.20GHz stepping 04 $ cat /proc/version Linux version 2.6.32-5-amd64 (Debian 2.6.32-35) (da...@debian.org) (gcc version 4.3.5 (Debian 4.3.5-4) ) #1 SMP Mon Jun 13 05:49:32 UTC 2011 $ ./gettimeofday-cost (CLOCK_REALTIME) gtod: 345.124579 (CLOCK_REALTIME) clock(mono): 475.158095 (CLOCK_REALTIME) memcpy: 4.811645 (CLOCK_MONOTONIC) gtod: 344.205039 (CLOCK_MONOTONIC) clock(mono): 475.315154 (CLOCK_MONOTONIC) memcpy: 5.014204 (CLOCK_PROCESS_CPUTIME_ID) gtod: 346.424803 (CLOCK_PROCESS_CPUTIME_ID) clock(mono): 474.858415 (CLOCK_PROCESS_CPUTIME_ID) memcpy: 5.041936
