To get the total memory simply look for its attributes:
lsattr -El mem0
What exactly do you mean by "total memory" and "free memory"? The available physical RAM? The available space in RAM plus the available swap space (the virtual memory) ? Depending on what exactly you want to know you can use vmstat or svmon (only as root) with various options. You can also use topas, nmon or any other similar tool, because the numbers they show are available on public OS interfaces (read: system calls) which are just queried by these tools. The difference to svmon and vmstat is just the presentation of the data gathered this way.
You can also use "vmstat -v", just keep in mind that the number is shown in memory pages (in AIX this is 4k) instead of bytes or kilobytes. For example, a machine with 16GB RAM installed (i have marked bold the corresponding numbers for you):
Hi,
Im working on Solaris 9 on SPARC-32 bit running on an Ultra-80, and I have to find out the following:-
1. Total Physical Memory in the system(total RAM).
2. Available Physical Memory(i.e. RAM Usage)
3. Total (Logical) Memory in the system
4. Available (Logical) Memory.
I know... (4 Replies)
Hi all,
Could please let me know how to get the more memory free space (not added the RAM) in local zone.
-bash-3.00# vmstat 2 5
kthr memory page disk faults cpu
r b w swap free re mf pi po fr de sr s0 s1 s1 s1 in sy cs us sy... (3 Replies)
Good afternoon! Im new at scripting and Im trying to write a script to
calculate total space, total used space and total free space in filesystem names matching a keyword (in this one we will use keyword virginia). Please dont be mean or harsh, like I said Im new and trying my best. Scripting... (4 Replies)
All,
AIX: 6.1 64 bits
How to find out Free memory available on AIX 6.1 64 bits
When I used :
svmon -G
size inuse free pin virtual mmode
memory 1048576 612109 191151 215969 549824 Ded-E
pg space 4325376 ... (1 Reply)
good morning,
how I can know how much total and free memory I have in my AIX 5.3 server, and this is shown in megabytes or gigabytes?
Thank you very much. (4 Replies)
Hi Experts, need some help.
I`m trying to write a shell script to get free, used and total memory on our linux servers.
It's working great, but i need follow some standards to make it a real nagios plugin.
It's pretty simple, you just type two parameters to the script, check_ram -w 80 -c 90... (4 Replies)
I am new to AIX, I have few AIX 5.3 servers and I could see there are significant difference in paging space utilization on servers even though they are running same applications
below server is working fine which shows 2-5 % paging usage throuh out the day
cpu_scale_memp = 8... (12 Replies)
Hi,
Below is the code snippet I use on Linux (Centos) to retrieve the Process Name, PID and memory consumed on Linux (Centos) host:-
top -b -n 1 | awk -v date="$tdydate" -v ip="$ip" 'NR>7 {print date","ip","$12,","$1,","$10}'
Any idea how the same can be retrieved on an AIX host? This... (1 Reply)
Hi
I am trying to calculate memory used by Linux System
free -m
total used free shared buffers cached
Mem: 32109 31010 1099 0 3600 7287
-/+ buffers/cache: 20121 11987
Swap: 10239 1282 8957
Now according to my requirement Im calculating memory using below cmd
free -m | awk 'NR==3{printf... (2 Replies)
Discussion started by: sam@sam
2 Replies
LEARN ABOUT NETBSD
vmstat
VMSTAT(1) BSD General Commands Manual VMSTAT(1)NAME
vmstat -- report virtual memory statistics
SYNOPSIS
vmstat [-CefHiLlmstUvW] [-c count] [-h hashname] [-M core] [-N system] [-u histname] [-w wait] [disks]
DESCRIPTION
vmstat reports certain kernel statistics kept about process, virtual memory, disk, trap, and CPU activity.
The options are as follows:
-C Report on kernel memory caches. Combine with the -m option to see information about memory pools that back the caches.
-c count Repeat the display count times. The first display is for the time since a reboot and each subsequent report is for the time
period since the last display. If no wait interval is specified, the default is 1 second.
-e Report the values of system event counters.
-f Report fork statistics.
-H Report all hash table statistics.
-h hashname Report hash table statistics for hashname.
-i Report the values of system interrupt counters.
-L List all the hashes supported for -h and -H.
-l List the UVM histories being maintained by the kernel.
-M core Extract values associated with the name list from the specified core instead of the default /dev/mem.
-m Report on the usage of kernel dynamic memory listed first by size of allocation and then by type of usage, followed by a list of
the kernel memory pools and their usage.
-N system Extract the name list from the specified system instead of the default /netbsd.
-s Display the contents of the uvmexp structure. This contains various paging event and memory status counters.
-t Display the contents of the vmtotal structure. This includes information about processes and virtual memory.
The process part shows the number of processes in the following states:
ru on the run queue
dw in disk I/O wait
pw waiting for paging
sl sleeping
The virtual memory section shows:
total-v Total virtual memory
active-v Active virtual memory in use
active-r Active real memory in use
vm-sh Shared virtual memory
avm-sh Active shared virtual memory
rm-sh Shared real memory
arm-sh Active shared real memory
free Free memory
All memory values are shown in number of pages.
-U Dump all UVM histories.
-u histname Dump the specified UVM history.
-v Print more verbose information. When used with the -i, -e, or -m options prints out all counters, not just those with non-zero
values.
-W Print more verbose information about kernel memory pools.
-w wait Pause wait seconds between each display. If no repeat count is specified, the default is infinity.
By default, vmstat displays the following information:
procs Information about the numbers of processes in various states.
r in run queue
b blocked for resources (i/o, paging, etc.)
memory Information about the usage of virtual and real memory. Virtual pages (reported in units of 1024 bytes) are considered active if
they belong to processes which are running or have run in the last 20 seconds.
avm active virtual pages
fre size of the free list
page Information about page faults and paging activity. These are averaged every five seconds, and given in units per second.
flt total page faults
re page reclaims (simulating reference bits)
pi pages paged in
po pages paged out
fr pages freed per second
sr pages scanned by clock algorithm, per-second
disks Disk transfers per second. Typically paging will be split across the available drives. The header of the field is the first charac-
ter of the disk name and the unit number. If more than four disk drives are configured in the system, vmstat displays only the first
four drives. To force vmstat to display specific drives, their names may be supplied on the command line.
faults Trap/interrupt rate averages per second over last 5 seconds.
in device interrupts per interval (including clock interrupts)
sy system calls per interval
cs CPU context switch rate (switches/interval)
cpu Breakdown of percentage usage of CPU time.
us user time for normal and low priority processes
sy system time
id CPU idle
FILES
/netbsd default kernel namelist
/dev/mem default memory file
EXAMPLES
The command ``vmstat -w 5'' will print what the system is doing every five seconds; this is a good choice of printing interval since this is
how often some of the statistics are sampled in the system. Others vary every second and running the output for a while will make it appar-
ent which are recomputed every second.
SEE ALSO fstat(1), netstat(1), nfsstat(1), ps(1), systat(1), iostat(8), pstat(8)
The sections starting with ``Interpreting system activity'' in Installing and Operating 4.3BSD.
BUGS
The -c and -w options are only available with the default output.
The -l, -U, and -u options are useful only if the system was compiled with support for UVM history.
BSD October 22, 2009 BSD