I have many application running on LINUX box, RAM allocated on this box is 15GB
I want to know how much memory is consumed by Applications and OS
OK, now we're talking.
From the output you provided i read it like this:
You have 15G or RAM, of which ~14G are in (various) use, ~650M are unused. Of the 14G of used RAM ~2.5G are used for buffers and cache, leaving ~11.5G for kernel and applications. When you say ~8G are used for applications that would leave ~3.5G to the kernel. I don't know the Linux kernel well enough to say if the file cache is included in this figure or not.
You can check the memory footprint of running processes by using the -o vsz parameter to the ps-command (SystemV-version). i.e.
will show all processes with the allocated memory (virtual+physical, in KB) and the command lines to invoke them. You need to add the shared memory segments which you can find out about with the ipcs command:
to get the complete memory used by applications.
Refer to the man pages of the named commands for details.
hello
I am new to the UNIX I want to know what command is used
1.To know the Memory consumed by a process at a time .
2.To know the How many CPU's in a server.
3.To know the RAM size.
4.To know the Hard Disk size. (3 Replies)
Hello AIX gurues...
In order to present the statistics of real memory usage I need to know how much real memory is used by the AIX 5L kernel. No the exact figures of course but some close to the reality.
The AIX is running in a 7GB real machine, it has a HACMP configuration and my concern is... (1 Reply)
Hi,
I am looking for acoomand on HP where by i can see the CPU increasing for a given process ... I know i can see this from top/prstat ..
But it will give for all the processes - I want something like say ps where i can call it from a shell script a few times and check if it is has increased... (0 Replies)
Hi! I am new to HP-UX. :o
By using the command glance, I found the user memory usage was very high. I would like to know is there any command can show the process which consume most available memory ? (Just like the command top, but order by memory, not CPU) (1 Reply)
Hi!!!
how can I obtain the consumed memory of a process?
nowadays i'm using ps -efo pid, pmem, comm,args ....
but the information is in percentage, is that correct?
so, i want to know how can obtain the consumed memory of a process in mb?
thanks in advance!
Richard (3 Replies)
I need to log the size of physical/virtual memory consumed by any given given process using c/c++ code running on solaris and aix without using the proc filesystem. Please advise. (1 Reply)
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)
Discussion started by: Vipin Batra
1 Replies
LEARN ABOUT NETBSD
ipcs
IPCS(1) BSD General Commands Manual IPCS(1)NAME
ipcs -- report System V interprocess communication facilities status
SYNOPSIS
ipcs [-abcmopqstMQST] [-C system] [-N core]
DESCRIPTION
The ipcs program provides information on System V interprocess communication (IPC) facilities on the system.
The options are as follows:
-a Show the maximum amount of information possible when displaying active semaphores, message queues, and shared memory segments. (This
is shorthand for specifying the -b, -c, -o, -p, and -t options.)
-b Show the maximum allowed sizes for active semaphores, message queues, and shared memory segments. The ``maximum allowed size'' is
the maximum number of bytes in a message on a message queue, the size of a shared memory segment, or the number of semaphores in a
set of semaphores.
-c Show the creator's name and group for active semaphores, message queues, and shared memory segments.
-m Display information about active shared memory segments.
-o Show outstanding usage for active message queues, and shared memory segments. The ``outstanding usage'' is the number of messages in
a message queue, or the number of processes attached to a shared memory segment.
-p Show the process ID information for active semaphores, message queues, and shared memory segments. The ``process ID information'' is
the last process to send a message to or receive a message from a message queue, the process that created a semaphore, or the last
process to attach or detach a shared memory segment.
-q Display information about active message queues.
-s Display information about active semaphores.
-t Show access times for active semaphores, message queues, and shared memory segments. The access times is the time of the last con-
trol operation on an IPC object, the last send or receive of a message, the last attach or detach of a shared memory segment, or the
last operation on a semaphore.
-C system
Extract the name list from the specified system instead of the default ``/netbsd''.
-M Display system information about shared memory.
-N core
Extract values associated with the name list from the specified core instead of the default ``/dev/kmem''. and semaphores.
-Q Display system information about messages queues.
-S Display system information about semaphores.
-T Display system information about shared memory, message queues and semaphores. (This is shorthand for specifying the -M, -Q, and -S
options.)
If none of the -M, -m, -Q, -q, -S, -s, or -T options are specified, information about all active IPC facilities is listed.
RESTRICTIONS
System data structures may change while ipcs is running; the output of ipcs is not guaranteed to be consistent.
FILES
/dev/kmem default kernel memory
/netbsd default system name list
SEE ALSO ipcrm(1), shmat(2), shmctl(2), shmdt(2), shmget(2)AUTHORS
Thorsten Lockert <tholo@sigmasoft.com>
BUGS
This manual page is woefully incomplete, because it does not at all attempt to explain the information printed by ipcs.
BSD March 21, 2004 BSD