The ulimit tag has no wiki summary.
0
votes
1answer
17 views
What's the meaning of ulimit -a output?
What each of the values listed in the output of ulimit -a represents?
For example, what's the meaning of the following output (I've removed the obvious ones)?
core file size (blocks, -c) 0
...
0
votes
1answer
45 views
Why do we need hard and soft limit in open file count?
I was reading a separate SU question on setting ulimit value and the answer from Gordon mentioned something about hard and soft limit on open file descriptor count. Just curious, why do we need a hard ...
2
votes
2answers
66 views
ulimit nofiles and lsof
If I do an
lsof | grep user | wc -l
I get a number returned in the 25,000 range.
If I check
ulimit -a user
nofiles is set at 1024.
Can someone help me to understand the number of open ...
1
vote
1answer
55 views
Best folder configuration for application that opens around 1 million files and ulimit problems
I have an application that creates 16^5 files (1048576). I can configure it to create all them in the same folder or separate them in whatever way I want (having 1, 2, 3 or 4 subfolders on each ...
1
vote
1answer
65 views
Why does “ulimit -t 5” have no effect on “less” or “man”, but work on “yes”?
If I run
$ ulimit -t 5
$ yes
then yes gets killed after 5 seconds, but man and less/more don't.
Why are those two immune to ulimit?
3
votes
1answer
307 views
Mac os x 10.7.4 process limit
I have a 709 max user process. I want to double it, or more.
First: ulimit
> ulimit -a
core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
file size ...
4
votes
1answer
1k views
Why does limiting my virtual memory to 512MB with ulimit -v crash the JVM?
I am trying to enforce maximum memory a program can consume on a Unix system. I thought ulimit -v should do the trick. Here is a sample Java program I have written for testing :
import java.util.*;
...
0
votes
2answers
493 views
pipe: too many files open renders entire OS completely useless
I'm running Ubuntu 12.04, and I am having a major problem. Two separate times today, one of my open gnome-terminal sessions locked up and printed the error
pipe: too many open files
I realize ...
3
votes
1answer
1k views
Make ulimits work with start-stop-daemon
I have an init.d script that starts an app using start-stop-daemon --chuid SOME_SYSTEM_USER. That is, the app runs under a different user, not root.
Problem is, the app needs special limit settings ...
0
votes
0answers
104 views
How to find out the available (and used) user resources?
With ulimit, we can find out how many open files, running processes etc. at most the user can have at the same time. My question is: how can we find out how much of these limits are being used and how ...
5
votes
1answer
242 views
Locked out of host after reaching some ulimit
So, I have a sudoer account in a remote host, in which I create a process with thousands of threads and sockets. The thing is, if I create too many threads/sockets (not sure which one, it might even ...
2
votes
2answers
375 views
daemontools and ulimit
I have a daemontools service whose /service/myservice/run contains:
#!/bin/sh
exec setuidgid someuser somecommand
Now, if I run this as a script directly from a root shell, somecommand will get a ...
1
vote
0answers
212 views
Adobe flash on Linux 64bit: “Movie not loaded” and maximum stack-size
I was experiencing problems with all flash content (tried Firefox/Chromium/Opera, Ubuntu/Fedora and several Flash releases to no avail). While trying to playback any flash-movie, no video/sound ...
0
votes
1answer
873 views
XAMPP won't start Apache on Mac OS
When I try starting Apache from the XAMPP control panel (Mac OSX Snow Leopard), I get the following error popup and Apache won't start:
/Applications/XAMPP/xamppfiles/bin/apachectl: line 70: ulimit: ...
7
votes
1answer
3k views
setting ulimit on a running process
I launched a server application and I want to run it for a long time for testing purpose. Unfortunately, I forgot to set before ulimit -c unlimited to catch an eventual crash and inspect it. Is there ...
7
votes
1answer
740 views
ulimit does not obey me
Well..
$ ulimit -s
8192
$ sudo ulimit -s 16384
$ ulimit -s
8192
Why does ulimit disrespect me in such a barbaric way?
Lion, by the way.
2
votes
0answers
399 views
limits.conf ulimits not being applied to chrooted processes
We allow users to execute scripts on our servers. Our security model involves chrooting them. We want to be able to apply ulimit restrictions to them, and the best way to do it would seem to be in ...
0
votes
0answers
2k views
Update ulimit parameters on ubuntu with out restarting
I am trying to update ulimit open files limit from 1024 to 30000.
but i need this change with out restarting the server?
Even on restarting the server this changes are not reflected
followed this ...
0
votes
1answer
703 views
coredumps don't work after enabling them in /etc/security/limits.conf on Debian
I have some init scripts that launch some daemons that I wrote. I want Linux to generate a coredump anytime something crashes. I activated coredumps in /etc/security/limits.conf by adding the next ...
1
vote
2answers
3k views
How to increase stack limit permanently without restarting
I need to increase the default stack size on Linux. As I know there are usually two ways:
ulimit -s size
/etc/security/limits.conf
The ulimit method only works as long as I am logged in.
...
5
votes
1answer
2k views
strange behaviour with ulimit on Mac OS X 10.6
I get some very strange behaviour when working with ulimit.
I just open up a new shell
Hector:~ robertj$ ulimit -a
core file size (blocks, -c) 0
data seg size (kbytes, -d) ...
11
votes
3answers
8k views
Increase the maximum number of open file descriptors in Snow Leopard?
I am trying to do something that requires a large number of file descriptors
sudo ulimit -n 12288 is as high as Snow Leopard wants to go; beyond this results in
/usr/bin/ulimit: line 4: ulimit: ...
1
vote
1answer
808 views
ulimit soft limit for file descriptors - for a non-root user on CentOS 5.6
I am needing to increase the soft limit for "file descriptors", and make it effective for a non-root user (lets say user1).
Ran these commands, while logged in as user1:
>ulimit -a
core ...
1
vote
3answers
588 views
how to limit resource in Linux
I've posted a question about this few hours ago on Stack Overflow:
Linux bash inline command to execute a program and limit the resource
As I know, to limit the resource I can use ulimit ...
2
votes
2answers
418 views
Linux: Make “ulimit” limits be cumulative across spawned “subprocesses”
Let's say I have program #1 launching program #2 which is launching program #3.
If I call
ulimit -t 10
before calling program #1, then EACH program will be alloted 10 seconds of CPU time.
Could I ...
6
votes
2answers
8k views
How to change default ulimit values in Mac OS X 10.6?
Mac OS X limits number of processes to 266 and open files to 256. Sometimes this is problem; 256 open files and 266 processes aren't that much.
How it's possible to change default ulimit values in ...
1
vote
2answers
452 views
ulimit broke my server
I ran "ulimit -v 75" to get SBCL working, and now nothing will run on my server.
$ sbcl
Killed
$ vi
Killed
$ man ulimit
Killed
$ ulimit -v 256
-bash: ulimit: virtual memory: cannot modify limit: ...
6
votes
2answers
2k views
What parameters has ulimit?
I see in examples, that the Option -u is used, but I cannot find a documentation, that says what that option means. man ulimit shows the manual for a C-function. What options has ulimit and what does ...
2
votes
1answer
1k views
ulimit not limiting memory usage
When writing program, there are times when a runaway program slurps half of my RAM (generally due to practically infinite loops while creating large data structures), and bringing the system to become ...
