title: sysconf(_SC_CLK_TCK) what does it return?
body: <p>I was trying to understand various sysconf macros.I have written a program as below.</p>
  
  <pre><code>int main()
  {
      fprintf(stdout, "No. of clock ticks per sec : %ld\n",sysconf(_SC_CLK_TCK));
      return 0;
  }
  </code></pre>
  
  <p>I always get the result as 100.I am running it on a CPU that is clocked at 2.93GHz.What does the number 100 exactly mean.?</p>