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    <p>I'll assume that you've checked the JVM settings with which you start Tomcat. Maybe your memory is too low.</p> <p>I'd recommend that you download Visual VM 1.3.3, install all the plugins, start your Tomcat application, and attached Visual VM to the JVM. It'll show you what's happening in memory, CPU, objects created, threads, etc.</p> <p>You showed no code, and you have no data. You'll never solve this problem this way. No one here can help you much, either. Your code is creating too many objects. You need to find out why and stop it.</p> <blockquote> <p>We have business reason to create a single thread for single device and process incoming request.</p> </blockquote> <p>You might have a business reason, but your technical reasons might not be sound. Each HTTP request that comes in has a single thread. Isn't that what you want? When a GPS posts a request you have a single thread to handle it, right? Why must you create many threads with each request? What are those threads doing?</p> <p>Another approach might be to refrain from creating threads. When a request comes in from a device, find some unique tag like a device id and add that message to the session history for that device. I haven't heard any justification for creating threads so far.</p> <p>I don't know if you're taken the trouble to write your own server, but I'd recommend that you look into using Netty. It's an all-Java server based on non-blocking IO that's born to handle high traffic. They know how to handle threads. Maybe you can just use it and add your processing logic to it.</p>
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    1. CODear duffymo, GPS device communicates through internet with our TCP listener and it contains data packet in all request, service provider charges much for internet uses, hence we have individual thread for each device, so it does not take much time to create again and again connection with device. Suppose if i change my perm-gen to 1 GB, will it work?
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    2. COIt won't work if you continue to play fast and loose with resources and memory. It might just take 20 minutes to shut down instead of 5. Your implementation is seriously flawed. I'd rethink it.
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    3. COCan i use sleep method to make my thread sleep, so it won't use more resources and my connection with thread will also good. actually i don not want to loose connection with my device once it gets connected, since device keep sending data in every minute and i can not create a thread and stop thread in every minute, please suggest me. thanks
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A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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