The supplied command sar it probably what you are after. If you are after the value since last boot, just fire it off without parameters. Depending on your installation, you may get hourly or 5 minute stats, but it is averaged at the end. This is usually controlled by the running of sa1, often by the cron table of user account adm.
The columns are usually %usr %sys %wio %idle, so it's up to you to decide if you want 100-%idle or if I/O wait should be considered.
If this answers what you need, great.
If you need average at the moment, you can supply a variety of parameters. You could have
... which gets the information from the last 1 second. You can stretch this by increasing the first value. You can vary it by increaing the second value to show you more samples, e.g.
... will report the usage over the last 3 seconds 5 times and then an average.
There are also reports generated by sa2, again usually by the cron table of adm. Read your manaul pages about sa2 for where this file is likely to be in your implementation if you have it enabled.
hi,
AIX 5.3
For any command(say tar command) I am getting 100% busy for my hdisk.
But my CPU and Memory is not busy and have more idle also.
Please advice for any performance analysing.
Thanks in Advance, (3 Replies)
how can I find cpu usage memory usage swap usage and
I want to know CPU usage above X% and contiue Y times and memory usage above X % and contiue Y times
my final destination is monitor process
logical volume usage above X % and number of Logical voluage above
can I not to... (3 Replies)
Hi,
How can I find total CPU usage in percentage? e.g. if my system has 8 CPUs and I want to list total usage for all of them, is it possible through a command?
I have tried some of the commands like top, mpstat, sar. The output of those commands has to be manipulated to derive the percentage... (14 Replies)
Hi all,
Is it possible to get total memory usage and free memory usage without top? By Googling I found for total memory usage, use vmstat, for CPU, use mpstat, for disk I/O use iostat, is this correct? Will using sar gives the same result as ALL of these three (3) commands?
What about if I... (2 Replies)
Hi all
Can anyone advise/confirm whether total CPU usage when running sar is %user+%system+%iowait or is it %user+%system only?
I want to confirm whether I am having a CPU-bound problem or not.
This is a single-CPU VMware machine.
$ sar 5 20
Linux 2.6.18-238.5.1.el5... (7 Replies)
Hi,
I want to calculate the total cpu usage from the sar report. Say for example,
Linux 2.6.24-21-generic (blade10) 09/10/2012
04:54:36 PM CPU %user %nice %system %iowait %steal %idle
04:54:37 PM all 0.00 0.00 0.00 0.00 ... (1 Reply)
hi, i am using solaris server. I want to find the total CPU usage on a server. Top command will give that result, but here that command is not working. So anyone can help me to find the total CPU usage. (2 Replies)
Let's say i have 20 users logged on Server. How can I know how much memory percent used each of them is using with system time in each user? (2 Replies)
Trying to use awk to print the lines in file that have either REF or SNV in $3, add a header line, sort by $4 in numerical order. The below code does that already, but where I am stuck is on the last part where the total lines are counted and printed under Total_Targets, under Targets_less_than is... (4 Replies)
Discussion started by: cmccabe
4 Replies
LEARN ABOUT NETBSD
cpuset_set
CPUSET(3) BSD Library Functions Manual CPUSET(3)NAME
cpuset_create, cpuset_destroy, cpuset_zero, cpuset_set, cpuset_clr, cpuset_isset, cpuset_size -- dynamic CPU sets
SYNOPSIS
#include <sched.h>
cpuset_t *
cpuset_create(void);
void
cpuset_destroy(cpuset_t *set);
void
cpuset_zero(cpuset_t *set);
int
cpuset_set(cpuid_t cpu, cpuset_t *set);
int
cpuset_clr(cpuid_t cpu, cpuset_t *set);
int
cpuset_isset(cpuid_t cpu, const cpuset_t *set);
size_t
cpuset_size(const cpuset_t *set);
DESCRIPTION
This section describes the functions used to create, set, use and destroy the dynamic CPU sets.
This API can be used with the POSIX threads, see pthread(3) and affinity(3).
The ID of the primary CPU in the system is 0.
FUNCTIONS
cpuset_create()
Allocates and initializes a clean CPU-set. Returns the pointer to the CPU-set, or NULL on failure.
cpuset_destroy(set)
Destroy the CPU-set specified by set.
cpuset_zero(set)
Makes the CPU-set specified by set clean, that is, memory is initialized to zero bytes, and none of the CPUs set.
cpuset_set(cpu, set)
Sets the CPU specified by cpu in set. Returns zero on success, and -1 if cpu is invalid.
cpuset_clr(cpu, set)
Clears the CPU specified by cpu in the CPU-set set. Returns zero on success, and -1 if cpu is invalid.
cpuset_isset(cpu, set)
Checks if CPU specified by cpu is set in the CPU-set set. Returns the positive number if set, zero if not set, and -1 if cpu is
invalid.
cpuset_size(set)
Returns the size in bytes of CPU-set specified by set.
SEE ALSO affinity(3), pset(3), sched(3), schedctl(8), kcpuset(9)HISTORY
The dynamic CPU sets appeared in NetBSD 5.0.
BSD November 2, 2011 BSD