getdelays man page on SuSE

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GETDELAYS(1)							  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 implement
       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)
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