User:Hashar/bug41607
From Wikitech
Install a snapshot of MediaWiki using sqlite:
wget https://integration.mediawiki.org/nightly/mediawiki/core/mediawiki-78a5729.zip unzip mediawiki-78a5729.zip cd mediawiki-78a5729 # Install a basic database using sqlite as a backend php maintenance/install.php benchwiki sysop --pass secret --dbtype sqlite --dbpath . # Run the Dump test suite php tests/phpunit/phpunit.php --group Dump
With strace -c (count):
% time seconds usecs/call calls errors syscall ------ ----------- ----------- --------- --------- ---------------- 69.86 0.022932 0 5117222 rt_sigprocmask 16.49 0.005412 677 8 clone 12.19 0.004000 5 760 fsync 0.64 0.000209 0 9063 16 lseek 0.56 0.000183 0 11384 write 0.08 0.000026 0 1226 20 open 0.05 0.000015 0 1293 close 0.04 0.000014 0 567 brk 0.04 0.000014 0 1193 786 access 0.04 0.000012 0 3589 fstat snip...
strace -c -f (count and follow forks):
% time seconds usecs/call calls errors syscall ------ ----------- ----------- --------- --------- ---------------- 41.11 0.025380 0 5471037 rt_sigprocmask 38.88 0.024002 32 760 fsync 13.79 0.008514 608 14 wait4 2.72 0.001679 1 2700 read 2.70 0.001667 111 15 clone 0.41 0.000256 0 11578 write 0.24 0.000148 1 231 unlink 0.04 0.000023 0 9063 16 lseek 0.03 0.000020 0 1276 20 open 0.02 0.000013 0 3638 fstat 0.02 0.000013 0 3425 fcntl 0.02 0.000013 0 793 getcwd 0.01 0.000008 0 5814 43 lstat 0.00 0.000000 0 1392 close 0.00 0.000000 0 1504 58 stat 0.00 0.000000 0 1 poll 0.00 0.000000 0 965 mmap 0.00 0.000000 0 245 mprotect 0.00 0.000000 0 691 munmap 0.00 0.000000 0 594 brk 0.00 0.000000 0 177 rt_sigaction 0.00 0.000000 0 7 rt_sigreturn 0.00 0.000000 0 33 22 ioctl 0.00 0.000000 0 1249 842 access
