04-06-2002
cow not solved
Hello sir ,
I have given the offset address by using nm command.
Later i directly substituted it in the lseek. The values that i got
are wrong , in the program which you have given.I have compared the value of free space from your program by using v_free in vmmeter and standard vmstat command . They both don't tally So is there any other method to find out cow value..
Thank you very much for giving me answer
Last edited by manjunath; 04-06-2002 at 06:20 AM..
10 More Discussions You Might Find Interesting
1. HP-UX
Hi,
Will anybody tell me what is this 'intransient blocking page faults' in HP-UX, it is in the structure _pst_vminfo in the header file /ust/include/sys/pstat/vm_pstat_body.h? (4 Replies)
Discussion started by: sushaga
4 Replies
2. AIX
Sorry my poor english
In 570 pseries nmon shows excessive page faults, ascents of something more than 30000 Page faults.
System: AIX 5.2 ML5
Processor Type: PowerPC_POWER5
Number Of Processors: 2
Processor Clock Speed: 1656 MHz
CPU Type: 64-bit
Kernel Type: 64-bit
Memory Size: 2816 MB
... (1 Reply)
Discussion started by: daviguez
1 Replies
3. Shell Programming and Scripting
I'm new to PERL, but I want to take the page source and write it to a file or standard output. I used perl.org as a test website. Here is the script:
use strict;
use warnings;
use LWP::Simple;
getprint('http://www.perl.org') or die 'Unable to get page';
exit 0;
... (1 Reply)
Discussion started by: wxornot
1 Replies
4. Shell Programming and Scripting
Hi All,
Sorry to ask this question and i am not sure whether it is possible. please reply to my question. Thanks in advance.
I need a perl script ( or any linux compatible scripts ) to copy the graphical contents of the webpage to a word pad.
Say for example, i have a documentation site... (10 Replies)
Discussion started by: anand.linux1984
10 Replies
5. AIX
Hello,
I've been reading your forums for quite a while and the great amount of information I find here always come in hand.This time however, I need some specific help...
I have a doubt with an AIX server which I'm failing to understand as I'm new to its concept of memory management...
... (8 Replies)
Discussion started by: flpgdt
8 Replies
6. AIX
Hi,
OS = AIX 5.3
Large number of page faults recently start to occure on AIX 5.3 lpar with mysql database installed. I need help in setting AIX OS parameter to solve the paging problem and some guidance on interpreting my stats
t
Code:
# vmstat... (5 Replies)
Discussion started by: crosys
5 Replies
7. UNIX for Advanced & Expert Users
I realise that with GNU 'info' a lot of developers become, dare I say it, quite lazy when it comes to providing a well written man page - and some argue they're not needed at all. But I find, in the products that I develop, that man pages are used more often for quick reference, and therefore the... (1 Reply)
Discussion started by: cambridge
1 Replies
8. AIX
hi guys i hope you can help me with this situation.
i have 2 lpar with aix 7.1 and oracle 11gr2 in grid mode.
when i start nmon to check the current system health i notice that page fault are over 3000/s. than i have opened a case with ibm and they say that the problem is not paging nor... (10 Replies)
Discussion started by: gullio23
10 Replies
9. Solaris
Hi guys,
I have a zone on a M5000 server running solaris 10. The zone has an SAP application running on it and facing some performance issues. As part of the troubleshooting, I've been recommended to look for any paging on the OS. Please advise how to look for the paging.
I've been looking at... (4 Replies)
Discussion started by: frum
4 Replies
10. Shell Programming and Scripting
I need help to make a script for Ubuntu to OSCam that copy the text on this website that only contains "C: ip port randomUSERNAME password" and want to exclude the text "C:" and replace the rest with the old in my test.server file.
(line 22) device = ip,port
(line 23) user =... (6 Replies)
Discussion started by: baxarn
6 Replies
lseek(2) System Calls Manual lseek(2)
Name
lseek, tell - move read or write pointer
Syntax
#include <sys/types.h>
#include <unistd.h>
pos = lseek(d, offset, whence)
off_t pos;
int d, whence;
off_t offset;
pos = tell(d)
off_t pos;
int d;
Description
The system call moves the file pointer associated with a file or device open for reading or writing.
The descriptor d refers to a file or device open for reading or writing. The system call sets the file pointer of d as follows:
o If whence is SEEK_SET, the pointer is set to offset bytes.
o If whence is SEEK_CUR the pointer is set to its current location plus offset.
o If whence is SEEK_END, the pointer is set to the size of the file plus offset.
Seeking beyond the end of a file and then writing to the file creates a gap or hole that does not occupy physical space and reads as zeros.
The system call returns the offset of the current byte relative to the beginning of the file associated with the file descriptor.
Environment
System Five
If you compile a program in the System Five environment, an invalid whence argument causes SIGSYS to be sent. This complies with the
behavior described in the System V Interface Definition (SVID), Issue 1.
Return Values
Upon successful completion, a long integer (the current file pointer value) is returned. This pointer is measured in bytes from the begin-
ning of the file, where the first byte is byte 0. (Note that some devices are incapable of seeking. The value of the pointer associated
with such a device is undefined.) If a value of -1 is returned, errno is set to indicate the error.
Diagnostics
The system call fails and the file pointer remains unchanged under the following conditions:
[EBADF] The fildes is not an open file descriptor.
[EINVAL] The whence is not a proper value.
[ESPIPE] The fildes is associated with a pipe or a socket.
See Also
dup(2), open(2)
lseek(2)