Does any one know what tool to use to visualize how is memory layed out for C on linux systems. I mean how much stack portion is used in functional call.
Where exactly does the argument to function sit in memory ?
I have written small program pasted below. But I am not able to infer anything with the output I am getting.
(attached is the c code)
Global variable 'add' is used to locate the stack's base.
I don't know if this technique works ? waiting for your views
What's the best way to find out how much memory is being used/available? I tried using free, but I didn't quite understand the output. Can someone explain it?
$ free
total used free shared buffers cached
Mem: 16304536 16256376 48160 0 ... (6 Replies)
Hi,
I having problem with my linux machine
it have 6Gb physical memory and somehow it always almost coming to the bottom neck and than it start writing to the swap memory
you can see that there is more than 4G in cahce, is there any way to clean the cache or to limit it to 2Gb?
host1... (6 Replies)
Hi
I have Fedora linux with XFCE desktop. I want to use Indic lanquage in that. I have installed unicode devnagri fonts. But I am not able to change my default keyboard layout. How can I change default keyboard layout in XFCE or through command line.
Thanks
NeeleshG (0 Replies)
Hi All,
We are using the linux servers and need to track the memory utilization of the box. Could anyone advice how the same can be achived.
:) (1 Reply)
I am trying to create an application that will be able to sniff memory of other applications.
I am not completely new to systems programming but I am not sure how to go about this task. I understand that accomplishing this mainly require these steps.
1: Get a list of processes
2: Find the... (2 Replies)
Hello, I am using Linux os.
$ df -k /dev/shm
Filesystem 1K-blocks Used Available Use% Mounted on
tmpfs 2023256 1065000 958256 53% /dev/shm
$
Based on my google this, it is shared memory. What is this shared memory and where exactly it is used? Can you... (5 Replies)
In the following code, why the final result of "usC=cA+(char)ucB;" is 0xFF00?
In my opioion the memory layout of cA is "10000000" and
(char)cB is "10000000",usC type is unsigned short ,so the result should be "100000000" ,the 0x100.
Please help tell me what is wrong? Thanks!!;)
... (2 Replies)
Discussion started by: micky.zhou
2 Replies
LEARN ABOUT ULTRIX
ipcmk
IPCMK(1) User Commands IPCMK(1)NAME
ipcmk - make various IPC resources
SYNOPSIS
ipcmk [options]
DESCRIPTION
ipcmk allows you to create shared memory segments, message queues, and semaphore arrays.
OPTIONS
Resources can be specified with these options:
-M, --shmem size
Create a shared memory segment of size bytes. The size argument may be followed by the multiplicative suffixes KiB (=1024), MiB
(=1024*1024), and so on for GiB, etc. (the "iB" is optional, e.g., "K" has the same meaning as "KiB") or the suffixes KB (=1000), MB
(=1000*1000), and so on for GB, etc.
-Q, --queue
Create a message queue.
-S, --semaphore number
Create a semaphore array with number of elements.
Other options are:
-p, --mode mode
Access permissions for the resource. Default is 0644.
-V, --version
Display version information and exit.
-h, --help
Display help text and exit.
SEE ALSO ipcrm(1), ipcs(1)AUTHOR
Hayden A. James <hayden.james@gmail.com>
AVAILABILITY
The ipcmk command is part of the util-linux package and is available from Linux Kernel Archive <https://www.kernel.org/pub/linux/utils
/util-linux/>.
util-linux July 2014 IPCMK(1)