07-19-2010
"swap" has different meanings depending on the context.
The whole swap space (a.k.a. virtual memory) is including part of the RAM.
This RAM usage isn't reported as swap by the top command which only cares about disk usage; On the other hand, this RAM usage is included in "swap -s" statistics.
Last edited by jlliagre; 07-19-2010 at 12:32 PM..
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Google's failed me (and admins), hoping you guys can help out.
I wrote a web-enabled polling app that goes out and sudo lastb's all our servers every so often, and stores the results. All was well, until I added 3 new servers to my list.
Normal lastb output (my code basis):
userx ... (0 Replies)
Discussion started by: jtp353
0 Replies
2. UNIX for Advanced & Expert Users
Hi all, below is the output of my 'top' Tasks: 91 total, 2 running, 89 sleeping, 0 stopped, 0 zombie
Cpu(s): 3.9% us, 20.5% sy, 0.0% ni, 75.6% id, 0.0% wa, 0.0% hi, 0.0% si
Can someone tell me what does us, sy,ni,id,wa,hi,si stands stand for? (4 Replies)
Discussion started by: new2ss
4 Replies
3. UNIX for Dummies Questions & Answers
Hey guys,
I'm trying to merge the output from the ps and top commands; since I need the full command used (only showed in the ps), and the cpu usage with some decimal numbers (i.e.: 0.05%, only showed in top).
After exporting to different files, I was thinking of doing an egrep with the... (0 Replies)
Discussion started by: EnioMarques
0 Replies
4. Shell Programming and Scripting
Hi all, I'd like to capture the output from the 'top' command to monitor my CPU and Mem utilisation.Currently my command isecho date
`top -b -n1 | grep -e Cpu -e Mem` I get the output in 3 separate lines.Tue Feb 24 15:00:03
Cpu(s): 3.4% us, 8.5% sy .. ..
Mem: 1011480k total, 226928k used, ....... (4 Replies)
Discussion started by: new2ss
4 Replies
5. Shell Programming and Scripting
Hi,
I have a system under test, and I use a script that does a ps.
The output, is in the following format, it's basically the timestamp, followed by the rss and vsize.
09:03:57 68404 183656 68312 181944 69860 217360 67536 182564 69072 183172 69032 199276
09:04:27 68752 183292 70000 189020... (5 Replies)
Discussion started by: Bloke
5 Replies
6. Solaris
Hi,
I've installed SMCtop on to a Solaris 9 sparc server and I am trying to capture the output of top to a file without success. The version of top I have installed is top-3.6.1-sol9-sparc-local.gz. All my attempts are below.
# /usr/local/bin/top -d 5 -f /tmp/top.out... (3 Replies)
Discussion started by: sparcman
3 Replies
7. Shell Programming and Scripting
ok, so I have a script im running on a linux box that uses "egrep" a lot. now, when i run this script, i check the TOP to see how much system resource it is using.
the "top" command gives the following output:
last pid: 25384; load avg: 1.06, 1.04, 0.76; up 351+06:30:24 ... (0 Replies)
Discussion started by: SkySmart
0 Replies
8. Shell Programming and Scripting
Guys can you help me fix this parse error.
Here's my script.
#!/bin/bash
# Set up limit below
NOTIFY="6.0% us 6.1% us 6.2% us 6.3% us 6.5% us 6.6% us 6.7% us 6.8% us 6.9% us 7.0% us"
# CPU Usage every minute
TOP="$(top -b -n2 -d 00.20 |grep Cpu|tail -1 | awk -F ":" '{ print $2 }' | cut... (3 Replies)
Discussion started by: redtred
3 Replies
9. Shell Programming and Scripting
Hi ,
i am trying to set up an alert, when CPU usage (0.2%us in below output) is more than 40%
top | head | grep '^Cpu'
Cpu(s): 0.2%us, 0.2%sy, 0.0%ni, 99.1%id, 0.6%wa, 0.0%hi, 0.0%si, 0.0%st
using CUT, i pulled the value 0.2 and assigned to CPU (variable)
CPU=$(expr `top | head -10... (5 Replies)
Discussion started by: Prateek007
5 Replies
10. Solaris
Hi Solaris Folks :),
I need to calculate the swap usage on solaris server, please let me understand the output of below swap -s and swap -l commands.
$swap -s
total: 1774912k bytes allocated + 240616k reserved = 2015528k used, 14542512k available
$swap -l
swapfile dev swaplo... (6 Replies)
Discussion started by: seenuvasan1985
6 Replies
LEARN ABOUT DEBIAN
sg_get_mem_stats
sg_get_mem_stats(3) Library Functions Manual sg_get_mem_stats(3)
NAME
sg_get_mem_stats, sg_get_swap_stats - get VM statistics
SYNOPSIS
#include <statgrab.h>
sg_mem_stats *sg_get_mem_stats(void);
sg_swap_stats *sg_get_swap_stats(void);
DESCRIPTION
Memory statistics are accessed through the sg_get_mem_stats function. It returns a pointer to a static sg_mem_stats.
The sg_get_swap_stats returns returns swap statistics. It returns a pointer to a static sg_swap_stats.
On the FreeBSD operating system elevated privileges are required to access the swap statistics. Making the program setgid kmem should be
sufficient. Programs running as root will not have this problem.
RETURN VALUES
The VM system calls can return a pointer to either a sg_mem_stats or a sg_swap_stats.
typedef struct{
long long total;
long long free;
long long used;
long long cache;
}sg_mem_stats;
total The total amount of memory in bytes.
free The total free memory in bytes.
used The total used memory in bytes.
cache The amount of cache used in bytes.
typedef struct{
long long total;
long long used;
long long free;
}sg_swap_stats;
total The total swap space in bytes.
used The used swap in bytes.
free The free swap in bytes.
TODO
Add a function to hold open the file descriptor to the kernel memory structures. Doing this would allow the elevated privileges to be
dropped early on.
SEE ALSO
statgrab(3)
WEBSITE
http://www.i-scream.org/libstatgrab/
i-scream $Date: 2005/04/25 11:25:45 $ sg_get_mem_stats(3)