On Tue, Oct 5, 2010 at 5:13 PM, Dan McGee <dpmcgee@gmail.com> wrote:
And looking closer at my numbers, did we not lose time here? If you through the read() calls out (which I left in only because that was the top time user), I should do some new timings or someone else should as well...
Slower it is! Non-truncated test output below after two warm up runs of each. $ strace -c pacman -Ss pacman >/dev/null % time seconds usecs/call calls errors syscall ------ ----------- ----------- --------- --------- ---------------- 21.41 0.000764 0 11056 23 open 20.15 0.000719 0 21733 read 19.53 0.000697 0 17602 1 access 11.27 0.000402 0 11054 mmap 9.84 0.000351 0 11009 munmap 7.17 0.000256 0 6608 3 stat 5.89 0.000210 0 11026 fstat 4.74 0.000169 0 11033 close 0.00 0.000000 0 1 write 0.00 0.000000 0 19 mprotect 0.00 0.000000 0 55 brk 0.00 0.000000 0 8 rt_sigaction 0.00 0.000000 0 1 rt_sigprocmask 0.00 0.000000 0 13 13 ioctl 0.00 0.000000 0 1 execve 0.00 0.000000 0 2 uname 0.00 0.000000 0 1 fcntl 0.00 0.000000 0 20 getdents 0.00 0.000000 0 1 getrlimit 0.00 0.000000 0 1 geteuid 0.00 0.000000 0 1 arch_prctl 0.00 0.000000 0 3 1 futex 0.00 0.000000 0 1 set_tid_address 0.00 0.000000 0 1 set_robust_list ------ ----------- ----------- --------- --------- ---------------- 100.00 0.003568 101250 41 total dmcgee@galway ~/projects/pacman (master) $ strace -c ./src/pacman/.libs/lt-pacman -Ss pacman >/dev/null % time seconds usecs/call calls errors syscall ------ ----------- ----------- --------- --------- ---------------- 19.29 0.000790 0 21733 read 17.80 0.000729 0 17602 1 access 15.85 0.000649 32 20 getdents 15.14 0.000620 0 11009 munmap 11.33 0.000464 0 11072 39 open 7.20 0.000295 0 11033 close 6.74 0.000276 0 11026 fstat 6.64 0.000272 0 11054 mmap 0.00 0.000000 0 1 write 0.00 0.000000 0 9 6 stat 0.00 0.000000 0 19 mprotect 0.00 0.000000 0 53 brk 0.00 0.000000 0 8 rt_sigaction 0.00 0.000000 0 1 rt_sigprocmask 0.00 0.000000 0 13 13 ioctl 0.00 0.000000 0 1 execve 0.00 0.000000 0 2 uname 0.00 0.000000 0 1 fcntl 0.00 0.000000 0 1 getrlimit 0.00 0.000000 0 1 geteuid 0.00 0.000000 0 1 arch_prctl 0.00 0.000000 0 3 1 futex 0.00 0.000000 0 1 set_tid_address 0.00 0.000000 0 1 set_robust_list ------ ----------- ----------- --------- --------- ---------------- 100.00 0.004095 94665 60 total