05-05-2010
9 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hello,
Please help me to know, How to find out the how much amount of process addres space is required/is used for/by a process.
Tnx & Regards
Vishwa. (1 Reply)
Discussion started by: S.Vishwanath
1 Replies
2. AIX
Hi,
I have migrated some processing from true64 --> AIX 5.3. my problem is to process large files in memory by diff or awk program. I need to load app. 1.3 GB of data into memory but it fails that there is not enough memory.
I need following:
diff file1 file2
orig. aix diff err... (2 Replies)
Discussion started by: Petr
2 Replies
3. Programming
Hi,
I am looking to work on unix systems which include (hp-ux, ibm aix, solaris and linux). I want to get the total virtual address space of a process, the used virtual memory i am able to get without any problem. I have tried using getrlimit and getrlimit64, but that gives only ... (4 Replies)
Discussion started by: uiqbal
4 Replies
4. UNIX for Advanced & Expert Users
Can kernel process access user address space ? (2 Replies)
Discussion started by: subhotech
2 Replies
5. Web Development
Any clues on how to get rid of this PHP error?
PHP Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 71 bytes) in /website/www/includes/functions_manpages.php on line 58
PHP Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 71... (4 Replies)
Discussion started by: Neo
4 Replies
6. Shell Programming and Scripting
While running script I am getting an error like
Few lines in data are not being processed.
After googling it I came to know that adding such line would give some memory to it
ini_set("memory_limit","64M");
my input file size is 1 GB.
Is that memory limit is based on RAM we have on... (1 Reply)
Discussion started by: elamurugu
1 Replies
7. Shell Programming and Scripting
I have this script. (options is an array) It works fine. It responds fine to all items that are stored in the array. But when I press spacebar when I am asked for input. It will not give an error only run the function again. While I put : || ] in the script to capture the space. What am I missing... (6 Replies)
Discussion started by: Alex400
6 Replies
8. Programming
Suppose I have 3 gb of ram and 250 gb hard disk in my pc.
Now I wrote a simple C program having only one statement malloc() to allocate 4 gb of memory as 32 bit os can address 4gb address space then will the malloc succeed?
If yes then how it will get extra 1 gb of memory?
Does the process gets... (3 Replies)
Discussion started by: rupeshkp728
3 Replies
9. Solaris
Hi ,
In a server /tmp has almost reached 75% and i can see the File system utilization is 48Mb only , so i believe some process is using the /tmp space. I would like to know which process is using /tmp space.
# df -h /tmp
Filesystem size used avail capacity Mounted on
swap ... (9 Replies)
Discussion started by: chidori
9 Replies
LEARN ABOUT LINUX
getdtablesize
GETDTABLESIZE(2) Linux Programmer's Manual GETDTABLESIZE(2)
NAME
getdtablesize - get descriptor table size
SYNOPSIS
#include <unistd.h>
int getdtablesize(void);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
getdtablesize():
Since glibc 2.12:
_BSD_SOURCE ||
!(_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600)
Before glibc 2.12:
_BSD_SOURCE || _XOPEN_SOURCE >= 500 || _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED
DESCRIPTION
getdtablesize() returns the maximum number of files a process can have open, one more than the largest possible value for a file descrip-
tor.
RETURN VALUE
The current limit on the number of open files per process.
ERRORS
On Linux, getdtablesize() can return any of the errors described for getrlimit(2); see NOTES below.
CONFORMING TO
SVr4, 4.4BSD (the getdtablesize() function first appeared in 4.2BSD). It is not specified in POSIX.1-2001; portable applications should
employ sysconf(_SC_OPEN_MAX) instead of this call.
NOTES
getdtablesize() is implemented as a libc library function. The glibc version calls getrlimit(2) and returns the current RLIMIT_NOFILE
limit, or OPEN_MAX when that fails. The libc4 and libc5 versions return OPEN_MAX (set to 256 since Linux 0.98.4).
SEE ALSO
close(2), dup(2), getrlimit(2), open(2)
COLOPHON
This page is part of release 3.27 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
Linux 2010-09-20 GETDTABLESIZE(2)