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Figure 2: sar command line options

-u Report on the CPU utilization, which is the default. This option shows the time spent in kernel or user mode, idle with a process waiting for block I/O to complete, or just idle.
-b Report on the buffer activity, which includes the transfers per second of data between the system and block devices, system buffer accesses, buffer cahce hits, and data moved through the physical or raw device mechanism.
-d Report on activity for each block device on the system. This feature may not be available on all systems. This option will report on the portion of time a device has spent servicing a transfer request, the average number of requests waiting to be processed during that interval, number of transfers to and from the device, the average period of time that a request waits on the queue before being serviced.
-y This option reports on the TTY activity on the system, providing information on the number of characters being processed by the raw input, canonical input, and output systems, as well as transmit, receive, and modem interrupt rates.
-c Report on system call usage, both from a generic point of view consisting of all system calls, and a specific set, as well as the number of characters transfered through the system call interface.
-w Report on the system swapping and swithing performance. Information reported consists of the number of blocks read for swap-ins and swap-outs, and the number of process switches.
-a This option requests sar to report the utilization of the file access routines, iget, namei. and dirblk.
-q Reports on the average queue length while occupied, and the percent of time occupied for the run queue, and the swap queue.
-v Reports on the status of the inode, file, and process tables, reporting on the configured size, and actual usage at the time of sampling.
-m Reports on the message and semaphore activities, in primitives per second.
-p Report on the system paging activities. This includes address translation page faults (page not in memory), and protection faults (illegal access).
-r Reports on the current unused memory and disk blocks, including the availble free memory, and available free swap space.
-D Report on Remote File Sharing activity. This will be availble ONLY if your system is running RFS. Information includes the average number of RFS servers, percentage of time which the servers are idle, and the average number of receive descriptors.
-A This is equivalent to ALL of the preceeding options.