UPTIME(1) Linux User's Manual UPTIME(1)NAME
uptime - Tell how long the system has been running.
SYNOPSIS
uptime
uptime [-V]
DESCRIPTION
uptime gives a one line display of the following information. The current time, how long the system has been running, how many users are
currently logged on, and the system load averages for the past 1, 5, and 15 minutes.
This is the same information contained in the header line displayed by w(1).
System load averages is the average number of processes that are either in a runnable or uninterruptable state. A process in a runnable
state is either using the CPU or waiting to use the CPU. A process in uninterruptable state is waiting for some I/O access, eg waiting for
disk. The averages are taken over the three time intervals. Load averages are not normalized for the number of CPUs in a system, so a
load average of 1 means a single CPU system is loaded all the time while on a 4 CPU system it means it was idle 75% of the time.
FILES
/var/run/utmp
information about who is currently logged on
/proc process information
AUTHORS
uptime was written by Larry Greenfield <greenfie@gauss.rutgers.edu> and Michael K. Johnson <johnsonm@sunsite.unc.edu>.
Please send bug reports to <albert@users.sf.net>
SEE ALSO ps(1), top(1), utmp(5), w(1)Cohesive Systems 26 Jan 1993 UPTIME(1)
Check Out this Related Man Page
UPTIME(1) User Commands UPTIME(1)NAME
uptime - Tell how long the system has been running.
SYNOPSIS
uptime [options]
DESCRIPTION
uptime gives a one line display of the following information. The current time, how long the system has been running, how many users are
currently logged on, and the system load averages for the past 1, 5, and 15 minutes.
This is the same information contained in the header line displayed by w(1).
System load averages is the average number of processes that are either in a runnable or uninterruptable state. A process in a runnable
state is either using the CPU or waiting to use the CPU. A process in uninterruptable state is waiting for some I/O access, eg waiting for
disk. The averages are taken over the three time intervals. Load averages are not normalized for the number of CPUs in a system, so a
load average of 1 means a single CPU system is loaded all the time while on a 4 CPU system it means it was idle 75% of the time.
OPTIONS -p, --pretty
show uptime in pretty format
-h, --help
display this help text
-s, --since
system up since, in yyyy-mm-dd HH:MM:SS format
-V, --version
display version information and exit
FILES
/var/run/utmp
information about who is currently logged on
/proc process information
AUTHORS
uptime was written by Larry Greenfield <greenfie@gauss.rutgers.edu> and Michael K. Johnson <johnsonm@sunsite.unc.edu>
SEE ALSO ps(1), top(1), utmp(5), w(1)REPORTING BUGS
Please send bug reports to <procps@freelists.org>
procps-ng December 2012 UPTIME(1)
i'm trying to write a script that will check my os x box for uptime and autorestart gracefully if the uptime is greater than a certain number of days.
thus far i have this:
if uptime | cut -d ',' -f 1 | cut -d ' ' -f 4 -gt 10 ; then
echo "yes"
fi
this doesn't work and i've tried... (11 Replies)
Matez,
I have a list of process id's in a text file. I want to know how to find the idle time of a process which are more than 300secs and kill them accordingly.
Could you please help me to get these details. I want to write a shell script with this.
Thanks..Krish :) (36 Replies)
Hello Experts!!
My CPU is waiting a lot (around 33%) on I/O. I would like to find out what process(s) are waiting on the i/o. Below is my real time output of vmstat and sar.
Thanks for you help !!!!
Regards
Citrus
OS: AIX - 5L
: /u2/oracle >oslevel
5.3.0.0
: /u2/oracle... (9 Replies)
The UNIX Forums have many users, thanks to you. We will be upgrading the server soon, to make more processing room for all the users every day.
In the meantime (while waiting on the server upgrade) have limited the forum to disallow new connections when the load average is above 20; and... (9 Replies)
hello folks!
how can I display just the uptime without the current time, the word "up", and the load averages using the uptime command or some other command I do not know about? (13 Replies)
Hi, I checking yesterday's SAR logs for one of our servers and it was showing that utilisation was down to 0% for 10 minutes at 2am. We're unaware of any jobs running at this time so need to find out which process caused this spike.
Is there anything built into SAR (or does anything else exist)... (11 Replies)
Hi,
After run ps , uptime , w command I get reply "killed" as normal dba and staff group user.
As root every command works fine.
I cheched all the user settings , right with other servers and I could not find any error and other settings.
The oslevel is 5300-10-01-0921.
Any idea to... (12 Replies)
Hi
I have server with 48 cpus running SUN os.
I have loaded with enough tasks. But I could see my CPU utilization is very less compared to kernal's cpu utlization.
below is the output of top command
load averages: 23.2, 10.1, 16.6; up 423+16:45:16 ... (25 Replies)
Hi,
I am getting a high load average, around 7, once an hour. It last for about 4 minutes and makes things fairly unusable for this time.
How do I find out what is using this. Looking at top the only thing running at the time is md5sum.
I have looked at the crontab and there is nothing... (10 Replies)
Hi All,
I have Solaris-9, Sun Fire V1280 with uptime of 501 Days. My Big brother monitoring showing me 90% + memory utilization on this box. Since this is production box, I can not reboot it. Is there way to know, what is consuming so much ? It is affecting my other environment on the box.... (16 Replies)
Hi,
I am observing high load average on RHEL5 server and need to check the number of core processors available on the box to give me a bigger picture on whether or not I should be worried.
I have always checked the physical count quite simply.....
# grep 'physical id' /proc/cpuinfo |... (10 Replies)
sorry, not yelling, its just copied from a bug report and this prob is driving me crazy... ran stress --cpu 4 on a xeon and no problem the load went up to 4, but running mysql server for example the load is almost 0.00, where the same mysql server with same throughput gets 0.8 on another lenny... (15 Replies)
Hi Experts,
We encountered problem in one of the production system where some processes were taking higher CPU and after some time it came back to normal..
From system prespective, is there any way to check why processes took more cpu during that particular period. (16 Replies)
I want to get CPU average value only (not required user CPU & memory) with each hours on individual date. The sample output is below
| | | User |Memory| User |
Date | Time |CPU %|CPU % | % |Mem % |
03/02/2015|00:00:00| 24.56| 20.66| 89.75| 63.48|... (13 Replies)
Hi all,
Been reading a lot of the cpu load and its "analogy of it to car traffic path of expressway"
From wiki
Most UNIX systems count only processes in the running (on CPU) or runnable (waiting for CPU) states. However, Linux also includes processes in uninterruptible sleep states... (13 Replies)