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Old 01-23-2016, 02:04 PM   #1
mixic
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Registered: Jan 2016
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Java applications with gui start really slow when connected to a wireless network


I hope that I chose the right forum for my question because I'm not entirely sure where it fits best as my problem is a bit... let's say interesting:

Whenever I start netbeans while I'm connected to a wireless network it starts really slow (it takes about 1 to 2 minutes).
When I'm not connected to the internet (or connected through another device like a usb modem or LAN) it starts within 5 to 10 seconds.

The same thing seems to happen with all java applications that have a gui.
Once the programs have started they run fast and I don't experience any difference no matter if I'm connected to a wireless network or not.

So far I have tried a few things including switching between OracleJDK and OpenJDK, reinstalling netbeans and setting the max ram to 8GB for the processes.
Unfortunately none of these actions have shown any positive effect.

At the moment I happen to be developing a somehow complex gui in java and it drives me crazy that I have to wait 15 to 30 seconds until it starts.

Can anyone help me with this one?

Here is some information I think is needed/useful:
My OS: Arch linux
Network management tool: NetworkManager
Wireless network device driver: ath9k

If you need any further information just ask.
 
Old 01-24-2016, 04:16 PM   #2
ondoho
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it seems like most java apps (or maybe even the jdk itself) are doing internet trafficking.

maybe you can tell them, or java in general, to not connect to the internet via some config setting or preferences?
 
  


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