Limiting the usage of a resource (memory, disk space, CPU time, open files, network bandwidth, …) by a process or a group of processes.

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2
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0answers
9 views

Limiting users ram with cgroups not working (for me)

I registred because I didn't manage running cgroups with several tutorials/comments/whatever you find on google. I want to limit the amount of ram a specifix user may use. Internet says "cgroups". My ...
1
vote
0answers
18 views

How to decrease speed/priority of file transfer (graphical)?

I regularly have big transfers of files running between two local hard drives, and at the same time some network transfers through my Internet browser. The problem is that the local transfer seems to ...
5
votes
3answers
97 views

How can I tell which user limit I am running into?

Multiple sessions of the same user. When one of them gets to the point that it can no longer run new programs, none of them can, not even a new login of that user. Other users can still run new ...
3
votes
0answers
30 views

Is it bad to have thousands of autofs rules?

My company literally has thousands of NFS volumes, which we need to mount on a few of our servers. However, we never mount all of them at the same time; typically we mount about 12 at a time. Most of ...
0
votes
1answer
65 views

How “Max open files” soft and hard limit are set for specific process?

I used the cat /proc/<pid>/limits command to check the Max open file hard and soft limit, but I want to know how this value will be set and can it be increased or decreased? Is this value is ...
0
votes
1answer
15 views

Proftpd classes don't work

If setup my proftpd server and all is working fine on 'full' speed. but I want to limit a certain IP range to a speed limit. So I've added the following lines to the proftpd.conf file: <Class ...
0
votes
2answers
36 views

File Size Limit

What is the maximum file size limit in rhel 32 bit OS, is there any OS limitation for the file size , if there is any limitation set then please tell me what will be for root & oaa.
0
votes
0answers
91 views

How does WonderShaper Work?

I'm trying to limit bandwidth download/upload for my server (Centos 6.7). I had read some documents and these are suggest that I should use WonderShaper. So i had installed and tried but it has a ...
0
votes
0answers
48 views

CUPS limit pages per job

I am searching for a way to use Linux as a printer-server and i need to be able to limit the pages per printjob. So i for example want a maximum of 5 pages per job. No quota for a user or a timespan. ...
0
votes
1answer
39 views

`cpulimit` and `nice` not effective in limiting the cpu usage of a python program that contains heavvy computations using theano

I am running a program written in python that makes heavy computations using theano. As it is a very CPU-intensive program, it is disrupting all my other activies on my laptop. For this reason I ...
1
vote
1answer
46 views

How to handle broken link after file deletion.in /proc/<pid>/fd directory?

A process is creating huge number of log files and also deleting it. Many of those deleted files are having broken links in the /proc/pid/fd directory. Do these file handles need to be closed by ...
2
votes
1answer
182 views

Chrome/Chromium crashes (“Aw, snap!”, segfault): “Resource temporarily unavailable”

Chrome/Chromium won't load any websites and just shows the "Aw, Snap! Something went wrong..." page. Some sub-processes segfault. When started in a Terminal, it will shows lots of these: [......
1
vote
2answers
59 views

What is the default memory allocation for shell process by linux

What is the default memory allocation for shell process by Linux , i mean is there any upper limit for shell process or any process.
1
vote
0answers
43 views

getpriority returning different value on different hosts with same kernel version

I am running centos 6.6 on same type of hardware with kernel version "2.6.32-504.30.3.el6.x86_64" Has anybody seen this why the below code when compiled and executed gives a different value on two ...
5
votes
1answer
60 views

Can I set a resource limit for the current process tree?

Let's say I'm running on a resource-constrained system, and I want to ensure that the applications I run open no more than 10 files total. If I try to do it using setrlimit, something like: if (fork(...
0
votes
0answers
103 views

IPTables if more than 30 connection in 1 minute ban IP for 1 hour?

I am trying to setup a firewall that limits to 3 connections per IP and also ban the IP for an hour if > 30 connection attempts in one minute. Is this all possible with iptables? So far I have only ...
0
votes
0answers
16 views

Is it possible to have an IPA user/group in both security limits and nproc limits

I am planning to deploy cassandra to a set of Red Hat 6.7 machines but there was an additional requirement to use IPA user for the cassandra user. For the cassandra user we usually do some ...
1
vote
1answer
208 views

Why lsof reports a higher number of open files of user than what ulimit says should be allowed?

I have checked the result for user kpiserv [kpiserv@***** ~]$ lsof -u kpiserv |wc -l 5358 [kpiserv@***** ~]$ ulimit -a open files (-n) 1024 Why lsof reports a ...
3
votes
1answer
169 views

How to limit speed of file copy?

I am copying huge file from NFS mount using dd: dd if=/mnt/nfs/image.img of=/dev/sda I need to limit the speed of reading from NFS. How can I achieve it? The only precondition is to use some easy ...
0
votes
1answer
61 views

Relationship between limits.conf and LDAP?

This seems like a straight forward question: Is there a relationship between the groups defined in ldap ldif files and /etc/security/limits.conf ? I.e., does defining an LDAP user with ou=...
1
vote
1answer
31 views

Does loginuid have any impact on process limits?

On CentOS/RHEL 6, when I start my daemon as root user, I see /proc/<pid>/loginuid of the process as 0 and when I start it through sudo, I see loginuid of the sudo user. Even if I do sudo su - ...
1
vote
1answer
45 views

Restricting CPU time of processes by executable path

Is there a way to restrict CPU time (duration) for all processes which are invoked by executables that are located in a certain directory? I would like to be able to auto-kill all applications which ...
7
votes
1answer
2k views

/dev/mmcblk0 partitions limit

I've just mounted a microSD card which has 17 partitions in my laptop and I'm getting the following error in the YaST partitioner: Your disk /dev/mmcblk0 contains 17 partitions. The maximum number of ...
1
vote
0answers
55 views

How can I define time limit to a user's group per session

I have the group ABC and I need to configure a time-limit to 2min per session for its members. Like a TMOUT is only for a user, but I need for a group). How can I define time limit to a user's group ...
0
votes
2answers
85 views

Is there a way to rate-limit an rsync user?

I have a user with a Shell account(with jailkit) that insists on rsyncing 500gb of data on a daily basis. Is there a way to limit that rsync to say just 2mbits per sec? If I have to do it by IP, how ...
1
vote
1answer
132 views

How can I use arptables to limit the number of outgoing ARP requests a second?

End goal: Make a script that will limit the number of outgoing ARP requests in a second using arptables. This is to have the ability to not trip the ARP-limiting feature on Cisco devices. I want to ...
3
votes
1answer
521 views

Linux cgroups: limit CPU usage in absolute values which do not depend on CPU speed

I have a server with a 2.4GHz processor. And there are several cgroups, each one allowed to use 25% of CPU. That's equal to 600MHz. Then I replace the CPU with a faster one, let's say 3.0GHz. If I ...
4
votes
1answer
202 views

218TB XFS LVM filesystem. 144TB Free. Error message “No Free Space Left on Device”

I have a giant 218 TB RAID6, across LVM. It is actually 2 separate RAID6s joined together through LVM to form one giant RAID6. df -h shows all space was available, and I mounted to /share. I wanted ...
0
votes
0answers
187 views

threads limit on linux

My box is: x86_64 x86_64 x86_64 GNU/Linux Red Hat Enterprise Linux Server release 6.3 whan I run sample java app (does not matter how much java heap I provide!), it creates 2016 threads and dies with ...
1
vote
0answers
21 views

Limit cpu usage to one core [duplicate]

I want to run a server with user-written scripts. But these scripts should only use one core (which should be the one with the lowest usage because there will be many concurrent scripts). Also I need ...
2
votes
0answers
198 views

Process exceeding max open files limit

I am counting current open files by a process pid by :- cmd1:- ls /proc/$pid/fd/* | wc -l and then I am calculating percentage by fetching Max open Files limits. cmd2:- $ cat /proc/$pid/limits ...
-1
votes
1answer
33 views

How can I limit a log file to a certain number of most recent logs?

I know that you can limit the size of a file in respect to bytes, but I was wondering if there was a way to limit the number of logs within the file to, for example, the most recent 200 logs.
2
votes
0answers
697 views

File descriptor limits in /etc/system vs /etc/sysctl.conf vs /etc/security/limits.conf on Solaris

Let me explain first what I understood. In Solaris 10, rlim_fd_max and rlim_fd_cur in /etc/system set the hard and soft limits at the system level. And /etc/security/limits.conf sets the limits for ...
0
votes
0answers
203 views

Kill the process and restart server when memory is exceeded - bash and cron

I have a site on webfaction, using django and python. However, I have problem with memory. The problem arises, because I use external library, that can run forever (consuming much time and memory). ...
6
votes
1answer
661 views

Terminal does not accept pasted or typed lines of more than 1024 characters [duplicate]

When I enter text on stdin in an OS X Terminal, a single line is limited to 1024 characters. For example, cat > /dev/null beeps after I type (or paste) a line longer than this, and refuses to ...
6
votes
1answer
299 views

Limit the inode cache used by a command

I want to run a task with limits on the kernel objects that they will indirectly trigger. Note that this is not about the memory, threads, etc. used by the application, but about memory used by the ...
0
votes
2answers
192 views

bash execute command for X arguments at a time

I have a list of files stored in txt file. ./test7 ./test4 ./test1 ./test5 ./test6 ./test10 ./test8 ./test2 ./test9 ./test3 I want to run a command on all those files but I want to sleep 1 second ...
3
votes
1answer
135 views

GNU Parallel: How to limit max running network jobs per host

I'm using GNU Parallel for scanning a list of urls (from different hosts) for vulnerability, like this: cat urls.txt | parallel --gnu -j 50 ./scan {} The 'scan' program works for one url in one ...
4
votes
1answer
240 views

How to limit the running time of a program?

Sometimes when I write code I found that I made a stupid mistake and some loop takes almost all CPU time forever. Is there a way the running time of a program for example to 10 seconds in bash?
1
vote
0answers
51 views

icmp limited in many network spaces?

I wrote small script do show example usage of ip netns on unused class size C (here changed into 192.168.10) #!/bin/sh network=192.168.10 for id in `seq 0 127`; do ip netns del test-$id; done; ...
0
votes
0answers
214 views

CentOS limits.conf & cpulimit not working

I have a CentOS server I am testing things out on. In it, I have configured USERNAME hard maxlogins 4 USERNAME hard cpu 1 USERNAME hard nproc 10 in /etc/security/limits....
3
votes
0answers
158 views

Trickle not behaving as expected

I'm using Ubuntu Trusty 14.04 64 bits. I've installed trickle network shaper from repositories and I performed some tests: No limits I executed this command to test somehow my network download ...
4
votes
1answer
333 views

chromium browser: “Aw, snap” when too many windows/tabs are open

I have noticed, when I open more than 15 chromium instances (windows or tabs), I get the "AW, Snap" error Page: Seems to me there is some limit how many instances can be running at the same time. I ...
1
vote
1answer
303 views

cpulimit on a bash script which runs other commands

I have a bash script which runs other cpu-intensive commands . When I apply cpulimit on the bash script, the output of top shows processes for the commands inside the script still run without ...
0
votes
0answers
152 views

How to check number of connections

My server have high loads. CPU usage is low. Memory usage is low. IO is low. So I improve maximum number of connections in cpanel. Things are working. However, where can I see detail? How do I ...
1
vote
2answers
3k views

What do unlimit and limit do in the context of csh?

I'm running a csh script that calls unlimit and limit just before running a scientific model. The script looks something like so (truncated for brevity): #!/bin/csh -f # ... unlimit limit /usr/bin/...
2
votes
0answers
2k views

File limits getrlimit(RLIMIT_NOFILE) failed

(32-bit system) Posted a Q/A earlier regarding Chrome crashing because of exhausted limit in open files. Chrome has since run more smooth, (after increasing limit), but still crashes from time to ...
4
votes
1answer
897 views

Chrome too many files open / crash / Sorry Jim

When using Google Chrome I frequently get “Sorry Jim” tabs. The browser also frequently freezes and crashes. Running it from terminal emulator show a long line of Too many open files: [...:ERROR:...
0
votes
1answer
210 views

Mint maximum user passtext length?

Strangely, I can use a long passtext, approximately 64 words long, for disk encryption, but I'm having trouble with user password lengths. Certain steps fail like the installer or unlocking the ...
2
votes
0answers
116 views

Can I control number of TCP Connections per second in curl?

I am trying to make one traffic generator tool in linux centOS 6.5. I am using curl for this purpose. I can generate traffic from virtual interfaces using curl but I don't know if I can control number ...