SAR(1M) INTERACTIVE UNIX System SAR(1M)
NAME
sar: sa1, sa2, sadc - system activity report package
SYNOPSIS
/usr/lib/sa/sadc [t n] [ofile]
/usr/lib/sa/sa1 [t n]
/usr/lib/sa/sa2 [-ubdycwaqvmprDSAC] [-s time] [-e time]
[-i sec]
DESCRIPTION
System activity data can be accessed at the special request
of a user [see sar(1)] and automatically on a routine basis
as described here. The operating system contains several
counters that are incremented as various system actions
occur. These include counters for CPU utilization, buffer
usage, disk and tape I/O activity, TTY device activity,
switching and system-call activity, file-access, queue
activity, inter-process communications, paging, and Remote
File Sharing.
sadc and shell procedures, sa1 and sa2, are used to sample,
save, and process this data.
sadc, the data collector, samples system data n times, with
an interval of t seconds between samples, and writes in
binary format to ofile or to standard output. The sampling
interval t should be greater than 5 seconds; otherwise, the
activity of sadc itself may affect the sample. If t and n
are omitted, a special record is written. This facility is
used at system boot time, when booting to a multiuser state,
to mark the time at which the counters restart from zero.
For example, the /etc/init.d/perf file writes the restart
mark to the daily data by the command entry:
su sys -c "/usr/lib/sa/sadc /usr/adm/sa/sa`date +%d`"
The shell script sa1, a variant of sadc, is used to collect
and store data in binary file /usr/adm/sa/sadd where dd is
the current day. The arguments t and n cause records to be
written n times at an interval of t seconds, or once if
omitted. The entries in /usr/spool/cron/crontabs/sys [see
cron(1M)]:
0 * * * 0-6 /usr/lib/sa/sa1
20,40 8-17 * * 1-5 /usr/lib/sa/sa1
will produce records every 20 minutes during working hours
and hourly otherwise.
The shell script sa2, a variant of sar(1), writes a daily
report in file /usr/adm/sa/sardd. The options are explained
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SAR(1M) INTERACTIVE UNIX System SAR(1M)
in sar(1). The /usr/spool/cron/crontabs/sys entry:
5 18 * * 1-5 /usr/lib/sa/sa2 -s 8:00 -e 18:01 -i 1200
-A
will report important activities hourly during the working
day.
The structure of the binary daily data file is:
struct sa {
struct sysinfo si; /* see /usr/include/sys/sysinfo.h */
struct minfo mi; /* defined in sys/sysinfo.h */
struct dinfo di; /* RFS info defined in sys/sysinfo.h */
struct rcinfo rc; /* Client cache info defined in sys/sysinfo.h */
struct bpbinfo bi; /* Co-processor info defined in sys/sysinfo.h */
int bpb_utilize /* Co-processor utilize flag */
int minserve, maxserve; /* RFS server low and high water marks */
int szinode; /* current size of inode table */
int szfile; /* current size of file table */
int szproc; /* current size of proc table */
int szlckf; /* current size of file record header table */
int szlckr; /* current size of file record lock table */
int mszinode; /* size of inode table */
int mszfile; /* size of file table */
int mszproc; /* size of proc table */
int mszlckf; /* maximum size of file record header table */
int mszlckr; /* maximum size of file record lock table */
long inodeovf; /* cumulative overflows of inode table */
long fileovf; /* cumulative overflows of file table */
long procovf; /* cumulative overflows of proc table */
time_t ts; /* time stamp, seconds */
long devio[NDEVS][4]; /* device unit information */
#define IO_OPS 0 /* cumulative I/O requests */
#define IO_BCNT 1 /* cumulative blocks transferred */
#define IO_ACT 2 /* cumulative drive busy time in ticks */
#define IO_RESP 3 /* cumulative I/O resp time in ticks */
};
FILES
/usr/adm/sa/sadd dailydatafile
/usr/adm/sa/sardd dailyreportfile
/tmp/sa.adrfl addressfile
SEE ALSO
cron(1M), sag(1G), sar(1), timex(1).
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