Linux利器strace(3)

//--加载请求资源文件hello.php

4510  lstat64("/var", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0

4510  lstat64("/var/www", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0

4510  lstat64("/var/www/ep", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0

4510  lstat64("/var/www/ep/hello.php", {st_mode=S_IFREG|0644, st_size=119, ...}) = 0

4510  clock_gettime(CLOCK_MONOTONIC, {22638545, 870893872}) = 0

4510  setitimer(ITIMER_PROF, {it_interval={0, 0}, itvalue={60, 0}}, NULL) = 0

4510  rt_sigaction(SIGPROF, {0x835c120, [PROF], SA_RESTART}, {SIG_DFL, [], 0}, 8) = 0

4510  rt_sigprocmask(SIG_UNBLOCK, [PROF], NULL, 8) = 0

4510  time(NULL)                        = 1295425149

4510  open("/var/www/ep/hello.php", O_RDONLY) = 4

4510  fstat64(4, {st_mode=S_IFREG|0644, st_size=119, ...}) = 0

4510  time(NULL)                        = 1295425149

4510  chdir("/var/www/ep")              = 0

4510  fstat64(4, {st_mode=S_IFREG|0644, st_size=119, ...}) = 0

4510  mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7fe7000

4510  read(4, "\n", 8192) = 29

4510  read(4, "", 8192)                 = 0

4510  read(4, "", 8192)                 = 0

4510  close(4)                          = 0

//--  加载hello.inc, 对应php代码include './hello.inc'

4510  getcwd("/var/www/ep"..., 4096)    = 12

4510  time(NULL)                        = 1295425149

4510  open("/var/www/ep/hello.inc", O_RDONLY) = 4

4510  fstat64(4, {st_mode=S_IFREG|0644, st_size=29, ...}) = 0

4510  read(4, "\n", 8192) = 29

4510  read(4, "", 8192)                 = 0

4510  read(4, "", 8192)                 = 0

4510  close(4)                          = 0