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Help please - gnuplot runaway processes



Hello,                                                                                                                
                                                                                                                      
I'm using gnuplot to create webplots on the fly. I call gnuplot                                                       
from a perl cgi file using the command:                                                                               
                                                                                                                      
gnuplot $gpfile | ppmtogif 2> /dev/null > $imagedir/$giffile                                                          
                                                                                                                      
However, every now and again (about 1 in 5 times), the                                                                
gnuplot process does not terminate and starts using huge amounts of                                                   
cpu.                                                                                                                  
                                                                                                                      
Here is an example from top:                                                                                          
                                                                                                                      
13513 www       20   1  1016 1016   728 R N     0 45.9  0.1   1:20 gnuplot                                            
13589 www       18   1  1016 1016   728 R N     0 44.3  0.1   0:03 gnuplot                                            
13568 www       17   1  1016 1016   728 R N     0 44.1  0.1   0:08 gnuplot                                            
13402 www       14   1  1016 1016   728 R N     0 42.7  0.1   3:19 gnuplot                                            
                                                                                                                      
There have been times when the gnuplot process had been running for                                                   
hours before I killed it.                                                                                             
                                                                                                                      
The version is:                                                                                                       
                                                                                                                      
        G N U P L O T                                                                                                 
        Linux version 3.7                                                                                             
        patchlevel 1                                                                                                  
        last modified Fri Oct 22 18:00:00 BST                                                                         
        1999                                                                                                          
                                                                                                                      
This system is a Debian Potato (Stable) GNU/Linux box.                                                                
                                                                                                                      
Any help would be really appreciated.                                                                                 
                                                                                                                      
Regards,                                                                                                              
                                                                                                                      
Cyrus                                                

-- 
Cyrus Patel - cyrus@linuxfan.com
Dept. of Computer Engineering                             Debian GNU/Linux 
University of New South Wales                             (Woody)
Sydney, Australia.                                        ICQ: 50738541	
http://www.cyrusp.com  Mobile: +61 0402 266 731 cyrusmobile@linuxfreak.com




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