sar(1)
sar - system activity reporter
As shipped in IRIX 6.5. First release of IRIX 6.5.
NAME sar - system activity reporter SYNOPSIS sar [-ubdycwaqvmprtghIAUTR] [-o file] t [ n ] sar [-ubdycwaqvmprtghIAUTR] [-s time] [-e time] [-i sec] [-f file] DESCRIPTION sar, in the first instance, samples cumulative activity counters in the operating system at n intervals of t seconds, where t should be 5 or greater. If the -o option is specified, it saves the samples in file in binary format. The default value of n is 1. In the second instance, with no sampling interval specified, sar extracts data from a previously recorded file, either the one specified by -f option or, by default, the standard system activity daily data file /var/adm/sa/sadd for the current day dd. The starting and ending times of the report can be bounded via the -s and -e time arguments of the form hh[:mm[:ss]]. The -i option selects records at sec second intervals. Otherwise, all intervals found in the data file are reported. In either case, subsets of data to be printed are specified by option: -u Report CPU utilization (the default): %usr, %sys, %intr, %wio, %idle, %sbrk - portion of time running in user mode, running in system mode, processing interrupts, idle with some process waiting for I/O, completely idle or idle with some process waiting because system memory is scarce, respectively. These six percentages add up to 100%. The time that the processor spent in ``idle waiting for I/O'' state is further broken down into the following categories: %wfs - waiting for file system I/O %wswp - waiting for swap I/O to complete %wphy - waiting for physio other than swapping %wgsw - waiting for graphics context switch to complete %wfif - waiting while graphics pipe too full These five numbers add up to 100% of the %wio time. -b Report buffer activity: bread/s, bwrit/s - basic blocks transferred between system buffers and disk or other block devices; lread/s, lwrit/s - basic blocks transferred from system buffers to user memory; wcncl/s - pending writes in system buffers cancelled; %rcach, %wcach - cache hit ratios, that is, (1-bread/lread) as a percentage; pread/s, pwrit/s - basic block transfers via raw (physical) device mechanism. -d Report activity for each block device, i.e., disk drives. When data is displayed, the device specification dsk- is generally used to represent a disk drive. The activity data reported is: %busy, avque - portion of time device was busy servicing a transfer request, average number of requests outstanding during that time; r+w/s, blks/s - number of data transfers from or to device, number of bytes transferred in 512-byte (basic block) units; avwait, avserv - average time in ms. that transfer requests wait idly on queue, and average time to be serviced (which for disks includes seek, rotational latency and data transfer times). -y Report TTY device activity: rawch/s, canch/s, outch/s - input character rate, input character rate processed by canon, output character rate; rcvin/s, xmtin/s, mdmin/s - receive, transmit and modem interrupt rates. -c Report system calls: scall/s - system calls of all types; sread/s, swrit/s, fork/s, exec/s - specific system calls; rchar/s, wchar/s - characters transferred by read and write system calls. -w Report system swapping and switching activity: swpin/s, swpot/s, bswin/s, bswot/s - number of transfers and number of 512-byte units transferred for swapins and swapouts (including initial loading of some programs); pswpout/s - process swapouts pswch/s - process switches. -g Report graphics activity: gcxsw/s - graphics context switches per second ginpt/s - graphics input driver calls per second gintr/s - graphics interrupts other than FIFO interrupts per second fintr/s - FIFO too full interrupts per second swpbf/s - swap buffers calls per second -a Report use of file access system routines: iget/s, namei/s, dirblk/s. -q Report average queue length while occupied, and % of time occupied: runq-sz, %runocc - run queue of processes in memory and runnable; swpq-sz, %swpocc - swap queue of processes swapped out but ready to run. -v Report status of process, i-node, file tables and record lock tables: proc-sz, inod-sz, file-sz, lock-sz - entries/size for each table, evaluated once at sampling point; ov - overflows that occur between sampling points for each table. -m Report message and semaphore activities: msg/s, sema/s - primitives per second. -p Report paging activities: vflt/s - address translation page faults (valid page not in memory); dfill/s - address translation fault on demand fill or demand zero page; cache/s - address translation fault page reclaimed from page cache; pgswp/s - address translation fault page reclaimed from swap space; pgfil/s - address translation fault page reclaimed from file system; pflt/s - (hardware) protection faults -- including illegal access to page and writes to (software) writable pages; cpyw/s - protection fault on shared copy-on-write page; steal/s - protection fault on unshared writable page; rclm/s - pages reclaimed by paging daemon. Dfill, cache, pgswp, and pgfil are subsets of vflt; cpyw and steal are subsets of pflt. -t Report translation lookaside buffer (TLB) activities: tflt/s - user page table or kernel virtual address translation faults: address translation not resident in TLB; rflt/s - page reference faults (valid page in memory, but hardware valid bit disabled to emulate hardware reference bit); sync/s - TLBs flushes on all processors; vmwrp/s - syncs caused by clean (with respect to TLB) kernel virtual memory depletion; flush/s - single processor TLB flushes; idwrp/s - flushes because TLB ids have been depleted; idget/s - new TLB ids issued; idprg/s - tlb ids purged from process; vmprg/s - individual TLB entries purged. -r Report unused memory pages and disk blocks: freemem - average pages available to user processes; freeswap - disk blocks available for process swapping; vswap - virtual pages available to user processes. -h Report system heap statistics: heapmem - amount of memory currently allocated to system dynamic heap; allocd - memory in system heap allocated to callers; overhd - system heap block management overhead; unused - memory in heap available for allocation; req/s - number of allocation requests per second; bk/req - number of blocks searched per request; breq/s - bytes per second requested of heap; brnd/s - bytes per second request round-up by heap; bfree/s - bytes per second freed. -I Report interrupt statistics: intr/s - non-vme interrupts per second; vmeintr/s - vme interrupts per second; -U Report per-CPU utilization statistics: Same as -u option except each CPU is shown. -R Report memory statistics physmem - physical pages of memory on system; kernel - pages in use by the kernel; user - pages in use by user programs; fsctl - pages in use by file system to control buffers; fsdelwr - pages in use by file system for delayed-write buffers; fsdata - pages in use by file system for read-only data buffers; freedat - pages of free memory that may be reclaimable; empty - pages of free memory that are empty. -A Report all data. Equivalent to -udqbwcayvmprtghIUR. -T Report total counts instead of just percentages or per-second values. The counts are calculated by taking the difference between the start and end values in the data file. EXAMPLES To see today's CPU activity so far: sar To watch CPU activity evolve for 10 minutes and save data: sar -o temp 60 10 To later review disk activity from that period: sar -d -f temp To show total disk activity from that period: sar -T -d -f temp FILES /var/adm/sa/sadd daily data file, where dd are digits representing the day of the month. SEE ALSO gr_osview(1), osview(1), sar(1M)