I want to findout overall CPU usage and RAM usage in percentage, but i dint get success
$ command for cpu usage
4.85%
$ command for memory usage
15.15%
OR
$ command for cpu and mamory usage
cpu: 4.85%
mem: 15.15%
How can I achieve this?
You can use top and/or vmstat from the procps package.
Use vmstat -s to get the amount of RAM on your machine (optional), and
then use the output of top to calculate the memory usage percentages.
%Cpu(s): 3.8 us, 2.8 sy, 0.4 ni, 92.0 id, 1.0 wa, 0.0 hi, 0.0 si, 0.0 st
KiB Mem : 24679620 total, 1705524 free, 7735748 used, 15238348 buff/cache
KiB Swap: 0 total, 0 free, 0 used. 16161296 avail Mem
You can also do this for relatively short output:
watch '/usr/bin/top -b | head -4 | tail -2'
A shell pipe that calculates the current RAM usage periodically is
watch -n 5 "/usr/bin/top -b | head -4 | tail -2 | perl -anlE 'say sprintf(\"used: %s total: %s => RAM Usage: %.1f%%\", \$F[7], \$F[3], 100*\$F[7]/\$F[3]) if /KiB Mem/'"
(CPU + Swap usages were filtered out here.)
This command prints every 5 seconds:
Every 5.0s: /usr/bin/top -b | head -4 | tail -2 | perl -anlE 'say sprintf("u... wb3: Wed Nov 21 13:51:49 2018
used: 8349560 total: 24667856 => RAM Usage: 33.8%
Please use one of the following:
$ free -t | awk 'NR == 2 {print "Current Memory Utilization is : " $3/$2*100}'
Current Memory Utilization is : 14.6715
OR
$ free -t | awk 'FNR == 2 {print "Current Memory Utilization is : " $3/$2*100}'
Current Memory Utilization is : 14.6703
CPU usage => top -bn2 | grep '%Cpu' | tail -1 | grep -P '(....|...) id,' | awk '{print 100-$8 "%"}'
Memory usage => free -m | grep 'Mem:' | awk '{ print $3/$2*100 "%"}'
For the cpu usage% you can use:
top -b -n 1| grep Cpu | awk -F "," '{print $4}' | awk -F "id" '{print $1}' | awk -F "%" '{print $1}'
One liner solution to get RAM % in-use:
free -t | awk 'FNR == 2 {printf("%.0f%"), $3/$2*100}'
Example output: 24%
for more precision, you can change the integer N inside printf(%.<N>%) from the the previous command. For example to get 2 decimal places of precision you could do:
free -t | awk 'FNR == 2 {printf("%.2f%"), $3/$2*100}'
Example output: 24.57%
Related
problem below:
Script: I execute ps command with pid,user... and I am trying to use awk to sum overall cpu utilization of different processes.
Command:
> $ps -eo pid,user,state,comm,%cpu,command --sort=-%cpu | egrep -v '(0.0)|(%CPU)' | head -n10 | awk '
> { process[$4]+=$5; }
> END{
> for (i in process)
> {
> printf($1" "$2" "$3" ""%-20s %s\n",i, process[i]" "$6) ;
> }
>
> }' | sort -nrk 5 | head
Awk: Sum 5th column according to the process name (4th column)
Output:
1. 10935 zbynda S dd 93.3 /usr/libexec/gnome-terminal-server
2. 10935 zbynda S gnome-shell 1.9 /usr/libexec/gnome-terminal-server
3. 10935 zbynda S sublime_text 0.6 /usr/libexec/gnome-terminal-server
4. 10935 zbynda S sssd_kcm 0.2 /usr/libexec/gnome-terminal-server
As you can see, the fourth and the fifth columns are all good, but the other ones (rows/columns) are just the first entry from ps command. I should have 4 different processes as in the fourth column, but for example, the last column shows only one same process.
How to get other entries from ps command? (not only the first entry)
Try this
ps -eo pid,user,state,comm,%cpu,command --sort=-%cpu | egrep -v '(0.0)|(%CPU)' | head -n10 | awk '
{ process[$4]+=$5; a1[$4]=$1;a2[$4]=$2;a3[$4]=$3;a6[$4]=$6}
END{
for (i in process)
{
printf(a1[i]" "a2[i]" "a3[i]" ""%-20s %s\n",i, process[i]" "a6[i]) ;
}
}' | sort -nrk 5 | head
an END rule is executed once only, after all the input is read.
Your printf uses $6, which retains the value from the last line. Think you want to use "i" instead.
Of course $1, $2, and $3 have the same problem so you will need to preserve incoming values as well. An exercise to the student is to fix this.
I tried to write a shell script that shows and counts how many suspended processes there are.
But I succeeded only to show the suspended processes with:
#!/bin/bash
list_ps=`ps aux | awk '$8~/T/'`
echo "$list_ps"
I tried to count the suspended processes with:
nr=0
for i in $list_ps
do
nr=`expr $nr + 1`
done
Of course this didn't work because it counted every word there was even with the first row that had the USER PID STAT COMMAND.
Can you give me any suggestion on how I should do it?
Also here is the output for "ps aux | awk '$8~/T/" after I stopped some sleep processes.
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
alexsan+ 6441 0.0 0.0 9008 736 pts/0 T 16:17 0:00 sleep 5000
alexsan+ 6511 0.0 0.0 9008 820 pts/0 T 16:18 0:00 sleep 5000
alexsan+ 7041 0.0 0.0 9008 760 pts/0 T 16:21 0:00 sleep 333
additional characters can be added to the state field (depending on the options you use), so this might be a safer approach:
ps aux | awk '$8~/T/'
to count how many processes you have with a header :
ps aux | awk '$8~/T/' | wc -l
to skip the header :
count=$(ps aux | awk '$8~/T/' | wc -l)
echo $((count -1))
one line version :
echo $(( $(ps aux | awk '$8~/T/' | wc -l)-1))
within single awk :
ps aux | awk 'NR>1 && $8~/T/' | wc -l
Using the option --no-header of the ps command, you will not need to substract 1 from the number of lines of output you get from wc -l, so you just have to issue:
ps --no-header aux | awk '$8 ~ /T/' | wc -l
And since the header will contain the 'T' of 'STAT' in field #8, it was necessary to filter this line out.
Within single awk could you please try following.
echo $(( $(ps aux | awk '$8~/T/{count++} END{print count-1}')))
Or to assign to a variable simply:
var=$(ps aux | awk '$8~/T/{count++} END{print count-1}')
With the below command:
# ps aux
USER PID %CPU %MEM SZ RSS TTY STAT STIME TIME COMMAND
root 17760468 0.0 0.0 1180 1220 - A 18:15:00 0:00 iostat -Dsal 6
root 16777310 0.0 0.0 3172 408 - A 18:15:00 0:00 /usr/bin/perl
here i don't want iostst -Dsal 6 under COMMAND, instead it should show only iostat. I mean only command is needed not with its all options and parameters.
Reason for this query:
I am trying to use this below command on my AIX box -
ps aux | tr -s " " | head -1 | awk '{print $1,$2,$3,$4,$11}' ; ps aux | sort -rn +2 | tr -s " " | head -10 | awk '{print $1,$2,$3,$4,$NF}'
Since i have used NF in awk command, it will display only the last column of the line. In my case it will display "6" instead of iostst -Dsal 6 under COMMAND field.
Please help me here..!
i need to get stats from my Centos 6.7 with Cpanel and send to my external monitor server. What I would like to get is an average cpu load per user or per process name in the last 3 minutes. After many research and test not found any praticable solutions apart bash run top with
top -d 180 -b -n 2 > /top.log
second iteration looks like...
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
38017 mysql 20 0 760m 265m 6324 S 1.4 14.2 244:27.08 mysqld
39501 nobody 20 0 1047m 93m 7068 S 0.1 5.0 0:06.80 httpd
54877 johnd 20 0 32728 3612 2364 S 0.0 0.2 0:00.09 imap
51530 johnd 20 0 353m 5372 1928 S 0.0 0.3 0:04.17 php-fpm
39500 nobody 20 0 1046m 79m 3656 S 0.0 4.3 0:02.57 httpd
7 root 20 0 0 0 0 S 0.0 0.0 27:47.61 events/0
39497 nobody 20 0 1046m 84m 7784 S 0.0 4.5 0:02.77 httpd
etc...
then grep (only on the second iteration output) with COMMAND or USER, sum and divide by 100 to get value like cpu-load
echo "$PRTGTOP" | grep johnd | awk '{ sum += $9; } END { print sum/100; }'
I should probably also try to count the process times etc ?, maybe there is a simpler way to achieve the same result, maybe with third-party software to generate stats?
Thanks.
top gets its info from /proc/*/stat. Each numerical directory under /proc is a process number for a currently running process.
It may be easier for you to collect data directly from those directories. The data format is well defined and can be found in man proc under the subsection called "/proc/[pid]/stat".
You can try the pidstat tool (part of the sysstat package):
pidstat -C httpd -U johnd -h -u 180 1 | awk '{ sum += $7; } END { print sum/100;}'
This will return the percentage CPU usage of all processes matching the httpd command string and the johnd user over a 180-second interval.
ok, pidstat is better, thanks!, but if USER pid is run for only few seconds no cpu use is reported. i found best result with:
#run pidstat with 10 iterations for 18 times
pidstat -U -u 10 18 > /pidstat.log
then
#sum all cpu usage and divide by 18
cat /pidstat.log | grep -v Average | grep johnd | awk '{ sum += $8; } END { print sum/100/18;}' OFMT="%3.3f"
cat /pidstat.log | grep -v Average | grep httpd | awk '{ sum += $8; } END { print sum/100/18;}' OFMT="%3.3f"
with this i get best cpu usage stat per USER even if process is run only for few seconds but with high cpu usage
I need a for monitoring ALL disk i/o rates on Linux using bash, awk, sed. The problem is that it must return one row per time interval (so this one row should contain: tps, kB_read/s, kB_wrtn/s, kB_read, kB_wrtn, but summarized per all disks).
Natural choice here is of course:
-d -k -p $interval $loops
To limit it to all disks I use:
-d -k -p `parted -l | grep Disk | cut -f1 -d: | cut -f2 -d' '`
Now the nice trick to summarize columns:
-d -k -p `parted -l | grep Disk | cut -f1 -d: | cut -f2 -d' '` > /tmp/jPtafDiskIO.txt
echo `date +"%H:%M:%S"`,`awk 'FNR>2' /tmp/jPtafDiskIO.txt | awk 'BEGIN {FS=OFS=" "}NR == 1 { n1 = $2; n2 = $3; n3 = $4; n4 = $5; n5 = $6; next } { n1 += $2; n2 += $3; n3 += $4; n4 += $5; n5 += $6 } END { print n1","n2","n3","n4","n5 }'` >> diskIO.log
I am almost there, however this (running in the loop) makes being invoked each time from beginning, so I don't get the statistics from interval to interval, but always averages (so each invoke brings me pretty the same output).
I know it sounds complicated, but maybe somebody has an idea? Maybe totally different approach?
Thx.
EDIT:
Sample input (/tmp/jPtafDiskIO.txt):
> Linux 2.6.18-194.el5 (hostname) 08/25/2012
>
> Device: tps kB_read/s kB_wrtn/s kB_read kB_wrtn
> sda 0.00 0.00 0.00 35655 59
> sda2 0.00 0.00 0.00 67 272
> sda1 0.00 0.00 0.00 521 274
> sdb 52.53 0.56 569.40 20894989
> 21065384388 sdc 1.90 64.64 10.93
> 2391333384 404432217 sdd 0.00 0.00 0.04
> 17880 1343028
Output diskIO.log:
16:53:12,54.43,65.2,580.37,2412282496,21471160238
Why not use iotop http://guichaz.free.fr/iotop/ ?
dstat might be what you're looking for. It has a lot of things it can report on, with some common ones displayed by default.