After doing some concurrency tests on a project, I've checked what does the php calls with strace -c -p apache PID. I've used the latest symfony sandbox and made this call ab -n 100 -c 1 http://test1.domain.ltd/ ( 100 requests with 1 concurrent request, so nothing fancy)
and got these results : % time seconds usecs/call calls errors syscall ------ ----------- ----------- --------- --------- ---------------- 45.54 0.039688 0 281500 gettimeofday 23.68 0.020641 8 2500 brk 7.44 0.006484 0 32600 100 read 5.71 0.004974 1 9500 300 open 4.59 0.004001 40 100 accept 4.27 0.003722 0 9300 4200 access 2.57 0.002239 0 11900 time 1.99 0.001731 0 9600 lstat64 1.38 0.001202 0 9300 close 0.89 0.000772 0 8900 fstat64 0.64 0.000560 3 200 write 0.30 0.000264 0 1900 1000 stat64 0.21 0.000180 0 900 fcntl64 0.18 0.000160 2 100 flock 0.17 0.000146 1 100 munmap 0.15 0.000132 1 100 writev 0.13 0.000113 1 200 chdir 0.10 0.000086 0 200 getcwd 0.07 0.000063 0 400 getdents64 0.00 0.000000 0 400 umask 0.00 0.000000 0 300 setitimer 0.00 0.000000 0 100 _llseek 0.00 0.000000 0 100 poll 0.00 0.000000 0 200 rt_sigaction 0.00 0.000000 0 200 rt_sigprocmask 0.00 0.000000 0 100 mmap2 0.00 0.000000 0 100 getsockname 0.00 0.000000 0 100 shutdown ------ ----------- ----------- --------- --------- ---------------- 100.00 0.087158 380900 5600 total Is it normal to have 281500 calls (2815 calls / request - 45.54%) to gettimeofday in an empty symfony project ? I'm trying the investigate potentially bottlenecks in my app on high concurrency. Best regards, Elvis -- If you want to report a vulnerability issue on symfony, please send it to security at symfony-project.com You received this message because you are subscribed to the Google Groups "symfony users" group. To post to this group, send email to symfony-users@googlegroups.com To unsubscribe from this group, send email to symfony-users+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/symfony-users?hl=en
