Regarding Java Thread

Hi,
Iam having a problem......
My work is to process IP address one by one from a LOG file.
As the log file is very big so iam using Threads to reduce time.
Like if iam having 77 ip address then iam opening 10 connections
at a time by 10 thread...and the rest 7 ip are processed one by one..
But the thing is that when i start to run the application
the console window(JBILDER console window) goes off and next time it works or may the other time it works...i have to run again and again untill the out put comes............
if the log file is big then i have to run the application
2-3 times after than i get the console window stays..and gives the output..
But if iam not using the threads then the window nevers goes off
but the time to process is very high..3 hrs to process 100 ip address
jbuilder console window...
AppAccelerator(tm) 1.2.010 for Java (JDK 1.2), x86 version.
Copyright (c) 1997-1999 Inprise Corporation. All Rights Reserved.
robot.szukacz.pl
Company Name: 24 GODZINY SP. Z O.O.
street: UL. GARAZOWA 7
city: 02-651 WARSZAWA
location: PL
handle: nsk241211
phone: +48.226077884
Press Ctrl+C to terminate the application...
here as i run only one single ip so no problem ,
but i run a big log file 2 mb then this window goes off......
after trying 2-3 times then the window stays and gives the output..
thanks..
so can any one help me...
Ranjan...
U can mail me at [email protected]

Precisely what are you doing with a individual line which causes it to take so long ? If that isn't the result of a algorithm which is inefficient then you could possibly thread that portion out. You'd probably use some sort of thread pool, cause if you had 50000 ips then you'd be spawning 50000 threads. Something like 10-20 threads is ok I guess. So your log file parse gets a line and picks a available thread from the pool, if there is one free, and then send it off to the thread for processing. You need to gurantee that your thread can do it's job in polynomial time(that means in a reasonable amount of time) for this to be effective and consider how the main program is going to communicate with the threads.
I suggest first taking a look at your algorithm first before embarking on a threading quest (ie look for potential bottlenecks). It's just simpler (IMO) to handle.
ps. It's quite difficult to read responses in CAPS. Causes eyeaches. :(
>
YA YOU ARE RIGHT BUT IF WE GO BY SEQUENTIALLY THEN IT
WILL TAKE LONG TIME AS TAKE A IP ADDRESS FROM LOG FILE
AND FIND THE ADDRESS OF THE IP
LIKE 191.191.19.11 BELONGS TO SOME ONE .WE CAN FIND
OUT FROM ARIN.NET,
APNIC.NET OR RIPE.NET...
I HOPE U UNDERSTAND WHAT I MEAN TO SAY......
SO TO MAKE THINGS FAST IAM TRYING TO MAKE 10
CONNECTIONS AND
EACH THREAD HANDLES ONE CONNECTION.....
BUT WHEN I RUN FOR THE 1ST TIME THE JBUILDER CONSLOLE
WINDOW GOES OFF
AND AFTER TRYING AGAIN IT WORKS.....OR MAY AFTER ONE
MORE TIME.....
IF U STILL HAVE SOME DOUBTS THEN ASK ME
THANKS
RANJAN

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