01-22-2013
10 More Discussions You Might Find Interesting
1. UNIX for Advanced & Expert Users
Hi,
Im trying to find memory and other resources in IBM AIX. Please let me know how to do this. (3 Replies)
Discussion started by: R00tSc0rpi0n
3 Replies
2. HP-UX
Hi,
We have HP-UX 11.23 and i want to use glance utility to monitor the memory usuage. Can someone tell me how to sort by memory usuage in glance utility?
Thx (1 Reply)
Discussion started by: rockcapri
1 Replies
3. UNIX for Advanced & Expert Users
Hi Community,
I'm looking for a linux based utility for monitoring following system resources
1. Memory
2. CPU Usage
I know there are plenty freewares which poll the data and print in form of html pages. For eg. MRTG, Novel's Linux Monitoring tools etc.
But my requirement is deviated a... (1 Reply)
Discussion started by: anilgurwara
1 Replies
4. Emergency UNIX and Linux Support
Hi,
I'm using RHEL 4.5, and currently due to some special circumstances that required me to use this small monitor about 7"
The problem is while using this monitor with windows, the monitor able to show the graphic/view.. but while using redhat it unable to detect. This monitor has no... (7 Replies)
Discussion started by: flekzout
7 Replies
5. Shell Programming and Scripting
I have a shell script which sets some variables and then calls modules of a program in succession, one by one. Problem is that the script is executed on servers with many users, so sometimes the script starts running, runs for 10 minutes and then breaks due to lack of resources when other users run... (1 Reply)
Discussion started by: tetreb
1 Replies
6. Linux
Suppose our application limit use for up to 20GB of data. How to monitor the usage?
Do we need to consider swap?
Thanks. (2 Replies)
Discussion started by: zhshqzyc
2 Replies
7. UNIX for Dummies Questions & Answers
hi guys
I am having a doubt about memory monitoring on linux system
what I should be monitoring? memory usage? o swap usage?
I am using some monitoring tools but I am confused to what monitor for alerting
for example this case
looks the memory usage is very high and it's like that all... (2 Replies)
Discussion started by: karlochacon
2 Replies
8. Red Hat
Hi All,
I've been struggling with this problem for weeks to no avail.
When I go into Control Center-> Display Preferences my monitor is no longer recognized.
Instead, there is a red box which says "Unknown".
This one problem is preventing me from doing just about everything I need to do my... (3 Replies)
Discussion started by: jeffpas
3 Replies
9. Red Hat
Hey everyone,
I have a KVM or External monitor (19" Dell) that I am trying to hook up to a laptop running RHEL 6.3 (via VGA which is the only option). When I connect it, and go to System->Preferences->Display, the max resolution option it provides me for these external devices is 1280x1024. ... (2 Replies)
Discussion started by: rchaud10
2 Replies
10. Red Hat
Friends,
I have 8CPU/24gb RAM in my Linux servers around 30+. All the servers are running with Java based application with NFS mounted.
The problem what I have is, When I reboot servers the server memory looks decent. But after some time the "cached" memory increasing and "free" memory... (5 Replies)
Discussion started by: baluchen
5 Replies
FREE(1) User Commands FREE(1)
NAME
free - Display amount of free and used memory in the system
SYNOPSIS
free [options]
DESCRIPTION
free displays the total amount of free and used physical and swap memory in the system, as well as the buffers and caches used by the ker-
nel. The information is gathered by parsing /proc/meminfo. The displayed columns are:
total Total installed memory (MemTotal and SwapTotal in /proc/meminfo)
used Used memory (calculated as total - free - buffers - cache)
free Unused memory (MemFree and SwapFree in /proc/meminfo)
shared Memory used (mostly) by tmpfs (Shmem in /proc/meminfo)
buffers
Memory used by kernel buffers (Buffers in /proc/meminfo)
cache Memory used by the page cache and slabs (Cached and SReclaimable in /proc/meminfo)
buff/cache
Sum of buffers and cache
available
Estimation of how much memory is available for starting new applications, without swapping. Unlike the data provided by the cache or
free fields, this field takes into account page cache and also that not all reclaimable memory slabs will be reclaimed due to items
being in use (MemAvailable in /proc/meminfo, available on kernels 3.14, emulated on kernels 2.6.27+, otherwise the same as free)
OPTIONS
-b, --bytes
Display the amount of memory in bytes.
-k, --kibi
Display the amount of memory in kibibytes. This is the default.
-m, --mebi
Display the amount of memory in mebibytes.
-g, --gibi
Display the amount of memory in gibibytes.
--tebi Display the amount of memory in tebibytes.
--pebi Display the amount of memory in pebibytes.
--kilo Display the amount of memory in kilobytes. Implies --si.
--mega Display the amount of memory in megabytes. Implies --si.
--giga Display the amount of memory in gigabytes. Implies --si.
--tera Display the amount of memory in terabytes. Implies --si.
--peta Display the amount of memory in petabytes. Implies --si.
-h, --human
Show all output fields automatically scaled to shortest three digit unit and display the units of print out. Following units are
used.
B = bytes
K = kibibyte
M = mebibyte
G = gibibyte
T = tebibyte
P = pebibyte
If unit is missing, and you have exbibyte of RAM or swap, the number is in tebibytes and columns might not be aligned with header.
-w, --wide
Switch to the wide mode. The wide mode produces lines longer than 80 characters. In this mode buffers and cache are reported in two
separate columns.
-c, --count count
Display the result count times. Requires the -s option.
-l, --lohi
Show detailed low and high memory statistics.
-s, --seconds delay
Continuously display the result delay seconds apart. You may actually specify any floating point number for delay using either .
or , for decimal point. usleep(3) is used for microsecond resolution delay times.
--si Use kilo, mega, giga etc (power of 1000) instead of kibi, mebi, gibi (power of 1024).
-t, --total
Display a line showing the column totals.
--help Print help.
-V, --version
Display version information.
FILES
/proc/meminfo
memory information
BUGS
The value for the shared column is not available from kernels before 2.6.32 and is displayed as zero.
Please send bug reports to
<procps@freelists.org>
SEE ALSO
ps(1), slabtop(1), top(1), vmstat(8).
procps-ng 2016-06-03 FREE(1)