Solved

File Open

Posted on 2000-05-14
9
189 Views
Last Modified: 2010-04-21
How can I specify how many files can be opened simultaneously ?

Andrew
0
Comment
Question by:andrewyu
9 Comments
 
LVL 40

Expert Comment

by:jlevie
ID: 2808509
What OS?
0
 
LVL 12

Expert Comment

by:geotiger
ID: 2809449
In Solaris, you can set it for a shell as

ulimit -n 64

If you want to set up for all the users, you need to change kernel settings in /etc/system.

0
 

Author Comment

by:andrewyu
ID: 2810888
How can I amend this setting in FreeBSD ?

Andrew
0
Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

 

Accepted Solution

by:
nicob earned 30 total points
ID: 2810891
Hi,

To set the amount of users/processes in the /etc/system file you have to do the following :

set maxusers=<number>
set max_nprocs=<number>

Where <number> is you have to fill in the amount you want. You have to remember that max_nprocs is calculated in the following way :

10 + 16 * maxusers

To increase the number of file descriptors you have to put the following in the /etc/system file :

set rlim_fd_max=<number>

You require a reboot of the system after you have changed this in the /etc/system file.

Hope this answers your question.

Nico.
0
 
LVL 40

Expert Comment

by:jlevie
ID: 2811669
As I recall, on FreeBSD the number of open files is determined by the maxusers setting in the kernel config file and is twice the maximum number of processes. The default for the GENERIC kernel has maxusers=32 and since the maximum number of processes is 20+(16*maxusers), that yields a maximum number of open files of 1064. To raise the max open files limit you need to build a new kernel with a larger value for maxusers.
0
 
LVL 40

Expert Comment

by:jlevie
ID: 2813960
I've checked my assertion about the maximum number of openfiles in FreeBSD and in fact it is increaed by building a new kernel with a larger maxusers.
0
 

Author Comment

by:andrewyu
ID: 2814142
Thank you very much !

BUT, if the DEVIL told me the FILE TABLE IS FULL, do you think I can correct this problem by the solution provided by you ?

Andrew
0
 
LVL 40

Expert Comment

by:jlevie
ID: 2815095
His solution is for Solaris and it will work if that is your OS. If it's BSD then it won't work.
0
 

Author Comment

by:andrewyu
ID: 2817915
So, it is a solutionfor SVR?, right ?

Anyway, where can I get resources regarding this issues ?

Andrew
0

Featured Post

Free Tool: IP Lookup

Get more info about an IP address or domain name, such as organization, abuse contacts and geolocation.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Let's say you need to move the data of a file system from one partition to another. This generally involves dismounting the file system, backing it up to tapes, and restoring it to a new partition. You may also copy the file system from one place to…
I promised to write further about my project, and here I am.  First, I needed to setup the Primary Server.  You can read how in this article: Setup FreeBSD Server with full HDD encryption (http://www.experts-exchange.com/OS/Unix/BSD/FreeBSD/A_3660-S…
Learn several ways to interact with files and get file information from the bash shell. ls lists the contents of a directory: Using the -a flag displays hidden files: Using the -l flag formats the output in a long list: The file command gives us mor…
This video shows how to set up a shell script to accept a positional parameter when called, pass that to a SQL script, accept the output from the statement back and then manipulate it in the Shell.

827 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question