sysinfo: Obtaining System Statistics

• The sysinfo system call fills a structure with system statistics. Its only argument is a pointer to a struct sysinfo.
• Some of the more interesting fields of struct sysinfo that are filled include these:
  • uptime Time elapsed since the system booted, in seconds.
  • totalram Total available physical RAM
  • freeram Free physical RAM
  • procs Number of processes on the system
• The http://siber.cankaya.edu.tr/SystemsProgramming/cfiles/sysinfo.c program in Fig. 8.8 prints some statistics about the current system.

  Figure 8.8: Print System Statistics.