Why is ENTIRE rt.jar loaded into memory?!?!?

We're developing under JDK 1.4-beta2 and are close to releasing to in-house use of our application. One thing noticed is that the entire rt.jar and other jars get loaded into memory equaling ~45MB !! I am amazed if this is 'normal' behaviour. Are we missing some tweak or option grossly obvious or well known?
Even a simple Hello World test program loads in the entire rt.jar.
HELP!!

cross post
http://forum.java.sun.com/thread.jsp?thread=184491&forum=37&message=588369

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Why does [i]entire[/i] rt.jar get loaded into memory?

We're developing under JDK 1.4-beta2 and are close to releasing to in-house use of our application. One thing noticed is that the entire rt.jar and other jars get loaded into memory equalling ~45MB !! I am amazed if this is 'normal' behaviour. Are we missing some tweak or option grossly obvious or well known?
Even a simple Hello World test program loads in the entire rt.jar.
HELP!!

cross post
http://forum.java.sun.com/thread.jsp?thread=184491&forum=37&message=588369

Help! Help! Help! Why is DPV and LACS not loading into memory ?

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How do I find out the exact path of each and every file that LabVIEW finds and loads into memory for a given top level vi?

How do I find out the exact path of each and every file that LabVIEW finds and loads into memory for a given top level vi? There is probably a trivial, easy way to get this info, but I have not yet found it! Thanks..

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Message Edited by Ed Dickens on 08-01-2005 07:01 PM
Ed Dickens - Certified LabVIEW Architect - DISTek Integration, Inc. - NI Certified Alliance Partner
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Mike, thx for your response. Let me run this by you...
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Attachments:
snippet.JPG ‏8 KB

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Loading time into memory for a large datastore ?

Is there some analysis/statistics about what would be the loading time for a timesten data store according to the size of the data store.
We have a problem with one of our clients where loading of datastore into memory takes a long time. but only certain instances it takes this long.. maximum size for data store is set to be 8GB (64bit AIX with 45GB physical memory), is it something to do with transactions which are not committed?
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- Smaller datastores can be loaded/unloaded/recovered faster than larger datastores but the increased number of datastores could make system management more complex and/or error prone.
- For very intensive workloads (especially write workloads) on large SMP machines overall better throughput and scalability will be seen from multiple small datastores compared to a single large datastore.
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Is the whole jar loaded for a single class?

Hi,
Hopefully this is an easy yes/no question.
If my application makes reference to only a single class in a jar that has many other classes, does the entire jar (all the other classes) get loaded into memory?
If so, then it's worth it to break the jars up into only those classes I need (they're third party jars). Otherwise, I'll have to look for some other solution.
TIA.
Mike

No you don't.Yes he does - he was big enough to admit it - can't you?
import xyz.* doesn't "load everything in memory" as
schapel stated. You better read chapter 1 of your book
again (and again until it sinks in) before answering
advanced forum's questions.Perhaps you should reread schapel's post before making hot-headed replies to the advanced forum's questions. Besides, you must not read these forums too much because this topic comes up a lot.

Why is ENTIRE rt.jar loaded into memory?!?!?

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