[arch-general] resource limits, unable to run apps

Marek Otahal markotahal at gmail.com
Fri Aug 26 16:39:20 EDT 2011


Hi guys, 

in last days i'm severely bugged by some resource limits on my machine..my applications fail to run 
etc. 

I'm running on a netbook that is slow by default, but i've been on it for a few years and it was ok. 
I'm running normal KDE, IM client, kmail, firefox (with a lot, cca 30) tabs open, a konsole and 
netbeans ide. 

The thing is I remember I once played with some limits to avoid forkbombs etc..so my question is if 
you could point me to some files to check for configs? 

This is my top output: 
$ top
top - 22:19:59 up 1 day,  7:19,  3 users,  load average: 1.06, 1.56, 1.34
Tasks: 199 total,   1 running, 196 sleeping,   0 stopped,   2 zombie
Cpu(s):  1.8%us,  2.5%sy,  0.0%ni, 95.7%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
Mem:   2055224k total,  1748036k used,   307188k free,    13632k buffers
Swap:  2561304k total,   938420k used,  1622884k free,  1119728k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND                                            
20689 marek     20   0  223m  60m  17m S    4  3.0   2:08.92 skype                                              
 1322 root      20   0  113m  21m 4552 S    1  1.1  65:50.10 X                                                  
 3385 marek     20   0  6124  840  604 S    1  0.0  15:13.67 scdaemon                                           
 6421 marek     20   0  936m 137m  16m S    1  6.9   0:59.12 java                                               
 6832 marek     20   0  2576 1032  756 R    1  0.1   0:01.37 top                                                
 3216 marek     20   0  115m  12m 7156 S    1  0.6  31:17.96 konsole                                            
22696 marek     20   0  177m 8828 5240 S    1  0.4   6:52.92 kget                                               
 2707 marek     20   0  5576  344  212 S    0  0.0   2:52.82 gpg-agent                                          
 3275 marek     20   0  119m 5124 3136 S    0  0.2   2:36.09 kleopatra                                          
 3449 marek     20   0  101m 4280 2720 S    0  0.2   0:57.63 klipper                                            
 6451 root      20   0     0    0    0 S    0  0.0   0:23.52 kworker/0:2                                        
    1 root      20   0  1880   24    0 S    0  0.0   0:19.49 init                                               
    2 root      20   0     0    0    0 S    0  0.0   0:00.06 kthreadd                                           
    3 root      20   0     0    0    0 S    0  0.0   0:03.84 ksoftirqd/0                                        
    6 root      RT   0     0    0    0 S    0  0.0   0:00.00 migration/0                                        
   13 root       0 -20     0    0    0 S    0  0.0   0:00.00 cpuset                                             
   14 root       0 -20     0    0    0 S    0  0.0   0:00.00 khelper                                            
   15 root       0 -20     0    0    0 S    0  0.0   0:00.00 netns                                              
   16 root      20   0     0    0    0 S    0  0.0   0:00.25 sync_supers                                        
   17 root      20   0     0    0    0 S    0  0.0   0:00.00 bdi-default                                        
   18 root       0 -20     0    0    0 S    0  0.0   0:00.00 kblockd                                            
   20 root      20   0     0    0    0 S    0  0.0   0:00.14 khungtaskd  

Ulimit says
$ ulimit -a
core file size          (blocks, -c) 0
data seg size           (kbytes, -d) unlimited
scheduling priority             (-e) 30
file size               (blocks, -f) unlimited
pending signals                 (-i) 16028
max locked memory       (kbytes, -l) 80000
max memory size         (kbytes, -m) unlimited
open files                      (-n) 1024
pipe size            (512 bytes, -p) 8
POSIX message queues     (bytes, -q) 819200
real-time priority              (-r) 75
stack size              (kbytes, -s) 8192
cpu time               (seconds, -t) unlimited
max user processes              (-u) 250
virtual memory          (kbytes, -v) unlimited
file locks                      (-x) unlimited


and I use pm-utils, should that matter? 

I used to run the system under similar load and it was ok, now eg. my compiles in netbeans fail, 
says OutOfMemoryException or sometimes cannot create a new native thread. (openjdk), also 
command line tools fail with things like
$ man scdaemon
man: fork failed: Resource temporarily unavailable
I wonder is it the memory consumed by netbeans or some number of process/open files limit or 
something? 

I'm glad for any suggestions, as now if i want to develop in java, i have to shut down browser, chat 
and even though...

Thank you, Mark

PS: i know..but now i'd not like to hear suggestions like using a lighter DE or buying better hw ;)

-- 

Marek Otahal :o)
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