NAME

sysstat − print statistics and information about the state of the system

SYNOPSIS

sysstat [−vcR]

OPTIONS

−vPrint out the compilation version timestamp for the kernel.  This is the default if no options are specified. 

−cPrint out the number of times each system call has been invoked. 

−p nEnable or disable system call timing. 

−tFor each system call, print the number of calls and how much time was required. 

−RReset the count and time information for system calls. 
 

DESCRIPTION

This command prints out statistics and other information about the system. 

VERSION TIMESTAMP

−vBy default, sysstat prints the compilation version timestamp for the kernel.  This is a unique identifier indicating who compiled the kernel and when.  This information is printed if no options are specified, or if the -v  option is specified. 

SYSTEM CALL STATISTICS

−cThis option indicates that sysstat should display a count of the number of times each system call has been invoked.  For each call, the number of invocations is printed along with an indication of whether the call, if done by a migrated process, would be handled locally or would require action by the process’s home node. 

−tThis option tells sysstat to display for each system call the number of times the call was invoked, the total time spent in that call, and the average time spent in that call.  Note that if a process is migrated, its system calls are recorded by the host that it is executing on, rather than by the home node.  Normally system call timing is turned off; use the −p option to turn it on. 

−RThis option causes sysstat reset the kernel’s count of the number of times each system call has been invoked, as well as the accumulated time for each system call.  Thus, subsequent invocations of sysstat with the −c or −t option will report only activity since the invocation with the -R option. 

−pThis option controls whether Sprite keeps track of how much time each system call takes.  To turn on system call timing, use −p 1; to turn it off, use −p 0. 

BUGS

System call timing is only available on ds5000s. 

SEE ALSO

migcmd, fscmd

KEYWORDS

statistics, process migration, system call

Sprite version 1.0  —  May 22, 1992