07-26-2005
get physical and virtual memory
What command can i use to get the physical and virtual memory of a database?
10 More Discussions You Might Find Interesting
1. AIX
Hi,
Would any one be so kind to explain me :
are ulimits defined for each user seperately ? When ?
Specialy what is the impact of :
max locked memory
and
virtual memory
on performance of applications for a user.
Many thanks.
PS :
this is what I can see in MAN :
ulimit ]
... (5 Replies)
Discussion started by: big123456
5 Replies
2. Solaris
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)
Discussion started by: 0ktalmagik
4 Replies
3. Solaris
Is it possible to restrict physical memory in solaris zone with zone.max-locked-memory just like we can do with rcapd ? I do not want to used rcapd (1 Reply)
Discussion started by: fugitive
1 Replies
4. UNIX for Dummies Questions & Answers
Hi all,
I am new to Linux kernel/user space programming having been an assembly programmer in my previous life. I am now using 2.6.x kernel on an embedded CPU that has a few dedicated hardware blocks (including more CPU running just C-code, i.e., no operating system).
There is a single DRAM... (1 Reply)
Discussion started by: agaurav
1 Replies
5. Solaris
Hi,
I am on an Solaris machine "SunOS 5.10 Generic_139556-08 i86pc i386 i86pc"..how do i check if I am on an physical or an virtaul server.
Thanks. (6 Replies)
Discussion started by: jjoy
6 Replies
6. Solaris
Hello,
Firstly, apologies if the theme of this post is discussed elsewhere.
At the moment we have a dual-domain M5000 running. Each domain is running with equal amounts of CPU and memory.
What we'd like to do is move the 2 hosts in question (1 per domain) to a Solaris 10 zone of it's zone.... (2 Replies)
Discussion started by: nm146332
2 Replies
7. UNIX for Advanced & Expert Users
Hi All,
How can I know whether the server I am connecting to is a virtual or physical one? The server might be having any Unix OS (Linux/Solaris/HP-UX etc.).
Is there any system files / commands which can show these concrete information?
Thanks in advance for the replies.
sanzee (1 Reply)
Discussion started by: sanzee007
1 Replies
8. Red Hat
Hi,
i am trying to find out hpw many virtual and physical processors does any linux machine has:
output of /proc/cpuinfo is as below :
# cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 26
model name : Intel(R) Xeon(R) CPU... (8 Replies)
Discussion started by: omkar.jadhav
8 Replies
9. AIX
HI,
I need a command to find,
1) Avaiable Physical CPU
2) Avaiable virtual CPU
TIA (1 Reply)
Discussion started by: sumanthupar
1 Replies
10. Solaris
uname -a reports type Generic so I know its virtual. Assume its an ldom somewhere.
How do I find out what physical host server is? (4 Replies)
Discussion started by: psychocandy
4 Replies
mem(7D) Devices mem(7D)
NAME
mem, kmem, allkmem - physical or virtual memory access
SYNOPSIS
/dev/mem
/dev/kmem
/dev/allkmem
DESCRIPTION
The file /dev/mem is a special file that provides access to the physical memory of the computer.
The file /dev/kmem is a special file that provides access to the virtual address space of the operating system kernel, excluding memory
that is associated with an I/O device.
The file /dev/allkmem is a special file that provides access to the virtual address space of the operating system kernel, including memory
that is associated with an I/O device. You can use any of these devices to examine and modify the system.
Byte addresses in /dev/mem are interpreted as physical memory addresses. Byte addresses in /dev/kmem and /dev/allkmem are interpreted as
kernel virtual memory addresses. A reference to a non-existent location returns an error. See ERRORS for more information.
The file /dev/mem accesses physical memory; the size of the file is equal to the amount of physical memory in the computer. This size may
be larger than 4GB on a system running the 32-bit operating environment. In this case, you can access memory beyond 4GB using a series of
read(2) and write(2) calls, a pread64() or pwrite64() call, or a combination of llseek(2) and read(2) or write(2).
ERRORS
EFAULT Occurs when trying to write(2) a read-only location (allkmem), read(2) a write-only location (allkmem), or read(2) or
write(2) a non-existent or unimplemented location (mem, kmem, allkmem).
EIO Occurs when trying to read(2) or write(2) a memory location that is associated with an I/O device using the /dev/kmem spe-
cial file.
ENXIO Results from attempting to mmap(2) a non-existent physical (mem) or virtual (kmem, allkmem) memory address.
FILES
/dev/mem Provides access to the computer's physical memory.
/dev/kmem Provides access to the virtual address space of the operating system kernel, excluding memory that is associated with an
I/O device.
/dev/allkmem Provides access to the virtual address space of the operating system kernel, including memory that is associated with an
I/O device.
SEE ALSO
llseek(2), mmap(2), read(2), write(2)
WARNINGS
Using these devices to modify (that is, write to) the address space of a live running operating system or to modify the state of a
hardware device is extremely dangerous and may result in a system panic if kernel data structures are damaged or if device state is
changed.
SunOS 5.10 18 Feb 2002 mem(7D)