ulimit -n


 
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Operating Systems Linux ulimit -n
# 1  
Old 03-04-2012
ulimit -n

Hi im a complete noob to shell commands but here is my problem i have a dedicated server i7 with 24 gig ram i have whm/cpanel on it now ive added a minecraft system to root but i cannot set the server to more than 512mb memory i was told its because the memory is being blocked and was told to do this ulimit -a then i done ulimit -n and says its at 1024 how can i make this larger please really need help as so far this has cost me alot of money and still not right many thanks and again im totally new to this world


Code:
ulimit -a
core file size          (blocks, -c) 0
data seg size           (kbytes, -d) unlimited
scheduling priority             (-e) 0
file size               (blocks, -f) unlimited
pending signals                 (-i) 193189
max locked memory       (kbytes, -l) 64
max memory size         (kbytes, -m) 1048576
open files                      (-n) 1024
pipe size            (512 bytes, -p) 8
POSIX message queues     (bytes, -q) 819200
real-time priority              (-r) 0
stack size              (kbytes, -s) 8192
cpu time               (seconds, -t) unlimited
max user processes              (-u) 193189
virtual memory          (kbytes, -v) 1048576
file locks                      (-x) unlimited


Last edited by pludi; 03-05-2012 at 06:38 AM..
# 2  
Old 03-04-2012
edit /etc/profile, add this to it:
Code:
ulimit -S -m 1000000
ulimit -S -v 500000

If there are other ulimit statements in there delete them. You have to be root to edit the file.

log out, then log back in.
Code:
ulimit -a

should show much larger values, like 1GB memory; 500MB of additional virtual memory.
# 3  
Old 03-05-2012
i downloaded that file to edit but am unsure where to add that line as there is some codeing in there already i need to make a program run at 1024 mb and maybe 3gb if i need it to i can run the program at 512 but when i tell it to use more memory it wont start up

thanks for your answer jim
# 4  
Old 03-05-2012
If you download that file and re-upload it, you can totally hose your system if you do not ensure it is a UNIX file and not a Windows file when it returns.

Edit the file on the server in place. NEVER do what you have just done.
# 5  
Old 03-05-2012
Ah ok mark thankyou still havent sorted this im running centos 5 with cpanel ive googled like mad and still cannot get the answer
# 6  
Old 03-05-2012
Perhaps PAM is also limiting your resouces. See the pam_limits(8) man page.
# 7  
Old 03-05-2012
What user is the minecraft server running under?
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