403Webshell
Server IP : 3.147.158.171  /  Your IP : 216.73.216.216
Web Server : Apache/2.4.67 (Amazon Linux) OpenSSL/3.5.5
System : Linux ip-172-31-2-178.us-east-2.compute.internal 6.1.172-216.329.amzn2023.x86_64 #1 SMP PREEMPT_DYNAMIC Wed May 20 06:31:34 UTC 2026 x86_64
User : ec2-user ( 1000)
PHP Version : 8.4.21
Disable Function : NONE
MySQL : OFF  |  cURL : ON  |  WGET : ON  |  Perl : ON  |  Python : OFF  |  Sudo : ON  |  Pkexec : OFF
Directory :  /usr/share/systemtap/examples/io/

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Current File : /usr/share/systemtap/examples/io/ioblktime.stp
#!/usr/bin/stap

global req_time%[25000], etimes

probe ioblock.request
{
  req_time[$bio] = gettimeofday_us()
}

probe ioblock.end
{
  t = gettimeofday_us()
  s =  req_time[$bio]
  delete req_time[$bio]
  if (s) {
    etimes[devname, bio_rw_str(rw)] <<< t - s
  }
}

/* for time being delete things that get merged with others */
probe kernel.{trace("block_bio_frontmerge"),
              trace("block_bio_backmerge")}
{
  delete req_time[$bio]
}

probe timer.s(10), end {
  ansi_clear_screen()
  printf("%10s %3s %10s %10s %10s\n",
         "device", "rw", "total (us)", "count", "avg (us)")
  foreach ([dev,rw] in etimes - limit 20) {
    printf("%10s %3s %10d %10d %10d\n", dev, rw,
           @sum(etimes[dev,rw]), @count(etimes[dev,rw]), @avg(etimes[dev,rw]))
  }
  delete etimes
}

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