9 More Discussions You Might Find Interesting
1. Programming
I use a binary name (ie polo) it gets some parameter , so for debugging normally i do this :
i wrote script for watchdog my app (polo) and check every second if it's not running then start it , the problem is , if my app , remain in state of segmentation fault for a while (ie 15 ... (6 Replies)
Discussion started by: pooyair
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2. Shell Programming and Scripting
Hi,
If there is an expert that can help:
I have many txt files that are produced from pdftotext that include page breaks the page breaks seem to be unix style hex 0C.
I want to add page numbers before each page break as in : Page XXXX
Regards antman (9 Replies)
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3. Shell Programming and Scripting
Hi
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4. Web Development
Hi
Is there a way to calculate the page load time, I am trying to calculate the load time of a page locally. I found tools to do this over http or https but none that work locally.
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5. UNIX for Dummies Questions & Answers
This question might be silly but its confusing me a bit:
What is the difference between handle to the thread HANDLE and thread identifier pthread_t?
---------- Post updated at 01:52 PM ---------- Previous update was at 01:48 PM ----------
Sorry I saw details and HANDLE is in windows and... (0 Replies)
Discussion started by: rupeshkp728
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6. UNIX for Dummies Questions & Answers
I am not sure where to post this so i will put it in the newbie section.
I have set up a bog standard debain 6, LAMP environment in the cloud.
The specs
1 core at 2GH
2.5gb Memory
running Jommla, with about 1.6K visitors a day.
I am using AppFirst (appfirst.com) to monitor the... (2 Replies)
Discussion started by: waseem
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7. UNIX for Advanced & Expert Users
I have a query (Don't know whether its the right folder to ask)
.................
What happens when page fault happens in Kernel ..(as the kernel mode is non-preemptive)...
any guesses...
Thanks in advance (2 Replies)
Discussion started by: yash0101
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8. Solaris
Hi,
We are running SUN sparc 5.8, notice frequent "Page Faults" message from our monitor s/w "ServerVantage" coming but no message display in SUN syslog or messages log. Any ideas why or what to check?
thanks,
Ahmad (2 Replies)
Discussion started by: Ahmad
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9. HP-UX
What causes 'page data fault' or 'data memory protection fault' under HP-UX 11. The server crashes and the shutdownlog reports the above error. For your info, Oracle 8i is running .
Appreciate your fast response,
Wobitu
:confused: (2 Replies)
Discussion started by: wobitu
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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 special
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 5.11 18 Feb 2002 mem(7D)