Sponsored Content
Top Forums UNIX for Dummies Questions & Answers file number limits in Solaris 8 Post 39357 by Perderabo on Thursday 14th of August 2003 07:50:16 AM
Old 08-14-2003
Preßy, an open file is, well, a file that is open. Most of them result from the successful execution of an open() system call. A process, on the other hand, is normally created by the successful execution of a fork() system call. You don't want to get the two mixed up.

blp001, now I have access to my copy of SOLARIS Internals Core Kernel Architecture by Mauro & McDougall. On page 476, I read
Quote:
Solaris allocates file structures for opened files as needed, growing the open file count dynamically to meet the requirements of the system load. Therefore, the maximum number of files that can be opened systemwide at any time is limited by available kernel address space, and nothing more.
So it's virtual rather than physical memory.
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

File Limits on Solaris 2.6

%ulimit -a nofiles(descriptors) 1024 This means that I can open up to 1024 file per process? But wonder if there is any hardlimit imposed by Solaris 2.6 (eg 255) ? By the way, is there any tool that can trace which files (or sockets) are opened by a process? Thanks DY (5 Replies)
Discussion started by: deaniyoer
5 Replies

2. UNIX for Advanced & Expert Users

nawk - file limits

Hi, I want to search particular pattern and splitting the file in to multiple files. (Splitted files may be more than 150). It got splitted upto 20 files after that, I got some error. nawk: filename.21 makes too many open files. input record number 654, file xxxxxxx Can u guide me to... (1 Reply)
Discussion started by: sharif
1 Replies

3. Solaris

Solaris counterpart of /etc/security/limits.conf

Hi, How can we set per user core file size, etc in solaris, i.e. I want solaris counterpart/equivalent of linux /etc/security/limits.conf. TIA (0 Replies)
Discussion started by: slash_blog
0 Replies

4. UNIX for Dummies Questions & Answers

ulimit and /etc/security/limits file permission

Hi there, I am working on AIX and i dont have permission for /etc/security/limits file. In the man page of ulimit it is mentioned that it will get the limitations for me from /etc/security/limits file. the file permission for ulimit command is -r-xr-xr-x 15 bin bin ... (6 Replies)
Discussion started by: quintet
6 Replies

5. Shell Programming and Scripting

Limits of FOR loop to go to end of File

Hi ALL:), I have a file for e.g. ajdflkj|dkj|djfj|go|123|4||||||||||||||89|101||||||||||||||| The length of file is not fixed. So wat the limits should be given in for loop to access till end of file???? Thanks in advance..... (2 Replies)
Discussion started by: rohiiit.sharma
2 Replies

6. Solaris

Find N number of days old file on solaris

Hi, bash-3.00$ ls -ltr total 8471258 -rw-r--r-- 1 mysql mysql 1227 Jul 7 22:33 information_schema.sql -rw-r--r-- 1 mysql mysql 479762 Jul 7 22:49 mysql.sql -rw-r--r-- 1 mysql mysql 1974789 Jul 7 22:50 youconnect.sql -rw-r--r-- 1 mysql mysql 1355... (3 Replies)
Discussion started by: prakash.gr
3 Replies

7. UNIX Desktop Questions & Answers

File size limits

I want to increase the file size, I am trying to store the output but it's not storing the whole output in to the file (7 Replies)
Discussion started by: navintsm
7 Replies

8. HP-UX

HP-UX 10.20 file size limits?

Hi, I'm running HP-UX 10.20. Is there a 2GB file size limit? if so, can i change it? (3 Replies)
Discussion started by: gabriel.560
3 Replies

9. UNIX for Dummies Questions & Answers

Soft and hard limits for nproc value in /etc/security/limits.conf file (Linux )

OS version : RHEL 6.5 Below is an excerpt from /etc/security/limits.conf file for OS User named appusr in our server appusr soft nproc 2047 appusr hard nproc 16384 What will happen if appusr has already spawned 2047 processes and wants to spawn 2048th process ? I just want to know... (3 Replies)
Discussion started by: kraljic
3 Replies

10. UNIX for Beginners Questions & Answers

selection particular number of line from a bunch by user defined limits.

hello i am having a file having a matrix as the following 4.1 5.5 6.55 7.2 8.2 1.002 i am having around 1 lakh rows, now i need a program in which i show give min x and min y and min z values and as well as max x max y max z, the values between these minimun and maximum values should be... (1 Reply)
Discussion started by: charan pattabhi
1 Replies
POSIX_GETRLIMIT(3)							 1							POSIX_GETRLIMIT(3)

posix_getrlimit - Return info about system resource limits

SYNOPSIS
array posix_getrlimit (void ) DESCRIPTION
posix_getrlimit(3) returns an array of information about the current resource's soft and hard limits. Each resource has an associated soft and hard limit. The soft limit is the value that the kernel enforces for the corresponding resource. The hard limit acts as a ceiling for the soft limit. An unprivileged process may only set its soft limit to a value from 0 to the hard limit, and irreversibly lower its hard limit. RETURN VALUES
Returns an associative array of elements for each limit that is defined. Each limit has a soft and a hard limit. List of possible limits returned +-----------+---------------------------------------------------+ |Limit name | | | | | | | Limit description | | | | +-----------+---------------------------------------------------+ | core | | | | | | | The maximum size of the core file. When 0, not | | | core files are created. When core files are | | | larger than this size, they will be truncated at | | | this size. | | | | | totalmem | | | | | | | The maximum size of the memory of the process, | | | in bytes. | | | | |virtualmem | | | | | | | The maximum size of the virtual memory for the | | | process, in bytes. | | | | | data | | | | | | | The maximum size of the data segment for the | | | process, in bytes. | | | | | stack | | | | | | | The maximum size of the process stack, in bytes. | | | | | rss | | | | | | | The maximum number of virtual pages resident in | | | RAM | | | | | maxproc | | | | | | | The maximum number of processes that can be cre- | | | ated for the real user ID of the calling process. | | | | | memlock | | | | | | | The maximum number of bytes of memory that may | | | be locked into RAM. | | | | | cpu | | | | | | | The amount of time the process is allowed to use | | | the CPU. | | | | | filesize | | | | | | | The maximum size of the data segment for the | | | process, in bytes. | | | | |openfiles | | | | | | | One more than the maximum number of open file | | | descriptors. | | | | +-----------+---------------------------------------------------+ EXAMPLES
Example #1 Example use of posix_getrlimit(3) <?php $limits = posix_getrlimit(); print_r($limits); ?> The above example will output something similar to: Array ( [soft core] => 0 [hard core] => unlimited [soft data] => unlimited [hard data] => unlimited [soft stack] => 8388608 [hard stack] => unlimited [soft totalmem] => unlimited [hard totalmem] => unlimited [soft rss] => unlimited [hard rss] => unlimited [soft maxproc] => unlimited [hard maxproc] => unlimited [soft memlock] => unlimited [hard memlock] => unlimited [soft cpu] => unlimited [hard cpu] => unlimited [soft filesize] => unlimited [hard filesize] => unlimited [soft openfiles] => 1024 [hard openfiles] => 1024 ) NOTES
Note This is a not POSIX function, but is common on BSD and System V systems. If the system does not support this function, then it will not be included at compile time. This may be checked with function_exists(3). SEE ALSO
man page GETRLIMIT(2). PHP Documentation Group POSIX_GETRLIMIT(3)
All times are GMT -4. The time now is 02:34 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy