File: timer-jiffies.stp

package info (click to toggle)
systemtap 1.7-1%2Bdeb7u1
  • links: PTS, VCS
  • area: main
  • in suites: wheezy
  • size: 18,448 kB
  • sloc: ansic: 43,401; cpp: 42,120; exp: 12,293; sh: 8,703; xml: 7,522; perl: 2,088; tcl: 954; python: 912; makefile: 625; ruby: 419; awk: 94; asm: 73; sed: 16
file content (10 lines) | stat: -rw-r--r-- 274 bytes parent folder | download | duplicates (10) 
1
2
3
4
5
6
7
8
9
10
 
global count_jiffies, count_ms
probe timer.jiffies(100) { count_jiffies ++ }
probe timer.ms(100) { count_ms ++ }
probe timer.ms(12345) 
{
  hz=(1000*count_jiffies) / count_ms
  printf ("jiffies:ms ratio %d:%d => CONFIG_HZ=%d\n",
    count_jiffies, count_ms, hz)
  exit ()
}