suse man page for getdelays

GETDELAYS(1)						      General Commands Manual						      GETDELAYS(1)

NAME
       getdelays -- Display delay statistics

SYNOPSIS
       getdelays -c  command
       getdelays -p  pid
       getdelays -t  tid

DESCRIPTION
       The getdelays utility helps pin-point possible resource shortages when running an application. The SLES10 kernel includes patches to imple-
       ment delay accounting, which measures the time a process spends waiting for disk I/O, swap I/O and CPU time  slices.  For  example,  if	an
       application is running rather slowly, delay accounting can tell you where it spends all its time.

       For  instance,  when  the  CPU  delay  is high, this means the application is competing with other proces for run time, but is losing quite
       often.

       High memory delays mean that the sum of applications running on this system need more physical memory than is available, and  are  swapping
       quite a lot.

       In order to enable delay accounting, you need to specify delayacct on the kernel command line when booting the system.

       Getdelays has three modes of operation:

       getdelays -c command
	      This will invoke command and print a summary of delay statistics when the command finishes.

       getdelays -p pid
	      This will print the current delay statistics of the process identified pid.

       getdelays -t tid
	      This will print the current delay statistics of the thread group identified tid.

AUTHOR
       Balbir Singh, IBM Corp.

       Shailabh Nagar, IBM Corp.

       Manpage contributed by Olaf Kirch <okir@suse.de>

								  April 13, 2006						      GETDELAYS(1)