07-31-2005
Sorry, we are running an Oracle Database in a UNIX Server. Thanks for the help.
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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 ]
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Hi,
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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.
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6. Solaris
Hello,
Firstly, apologies if the theme of this post is discussed elsewhere.
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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.).
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Thanks in advance for the replies.
sanzee (1 Reply)
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8. Red Hat
Hi,
i am trying to find out hpw many virtual and physical processors does any linux machine has:
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HI,
I need a command to find,
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2) Avaiable virtual CPU
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uname -a reports type Generic so I know its virtual. Assume its an ldom somewhere.
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LEARN ABOUT OSF1
kseg_to_phys
KSEG_TO_PHYS(9r) KSEG_TO_PHYS(9r)
NAME
KSEG_TO_PHYS - General: Converts a kernel-unmapped virtual address to a physical address
SYNOPSIS
vm_offset_t KSEG_TO_PHYS(
vm_offset_t addr );
ARGUMENTS
Specifies the buffer virtual address to convert to a physical address.
DESCRIPTION
The KSEG_TO_PHYS routine converts a kernel-unmapped virtual address to a kernel physical address. Device drivers can use this physical
address in DMA operations. Prior to calling KSEG_TO_PHYS, device driver writers often call one of the following routines to determine
whether the address passed is a virtual address in the addressed kernel segment: IS_KSEG_VA
Determines if the specified address is located in the kernel-unmapped address space. IS_SEG0_VA
Determines if the specified address is located in the user-mapped address space. IS_SEG1_VA
Determines if the specified address is located in the kernel-mapped address space.
RETURN VALUES
Upon successful completion, KSEG_TO_PHYS returns the physical address.
EXAMPLE
The following code fragment shows a call to KSEG_TO_PHYS:
. . .
caddr_t virt_addr; [1] unsigned phys_addr; [2]
. . .
if(IS_KSEG_VA(virt_addr)) { [3]
phys_addr = KSEG_TO_PHYS(virt_addr); [4]
. . .
Declares a variable to store the user buffer's virtual address. Declares a variable to store the physical address returned by
KSEG_TO_PHYS. Before calling KSEG_TO_PHYS, calls IS_KSEG_VA to determine if the virtual address is from the kernel-unmapped address space.
If the virtual address is from the kernel-unmapped address space, then calls KSEG_TO_PHYS to convert the address to a corresponding physi-
cal address.
SEE ALSO
Routines: IS_KSEG_VA(9r), PHYS_TO_KSEG(9r)
KSEG_TO_PHYS(9r)