How do I list or display all processes, executables, and shared libraries that are using up all virtual memory under Debian or Ubuntu Linux server for troubleshooting purpose?
Q. How do I check the size of PAGESIZE under Linux?
A. Most modern operating systems have their main memory divided into pages. It allows better utilization of memory. A page is a fixed length block of main memory, that is contiguous in both physical memory addressing and virtual memory addressing. Kernel swap and allocates memory using pages
Q. How do I find out the memory size of my AIX UNIX server? Can you tell us the command name to do the same?
A. You need to use bootinfo command to determines and displays various boot information, including boot device type and boot device name.
Command to check RAM in AIX UNIX
The bootinfo command uses the device configuration databases in information searches.
Just type the following command as the root user:
It will displays amount of real memory in kilobytes. bootinfo command may not be available in latest AIX UNIX version, try following command:
$ lsattr -El sys0 | grep realmem
svmon command – Captures and analyzes a snapshot of virtual memory
The svmon command displays information about the current state of memory. The displayed information does not constitute a true snapshot of memory, because the svmon command runs at user level with interrupts enabled. To print out global statistics, type:
# svmon -G
Read the man page of svmon for more information.
Now that I have Cent OS (RHEL clone) installed on my IBM server, I’m wondering what is ExecShield and how do I disable the same?