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#268142 - 26/10/2005 21:43 Java Handle Leaks
wfaulk carpal tunnel Registered: 25/12/2000 Posts: 16706 Loc: Raleigh, NC US	Azureus slows down my Windows machine. Way down. Other people seem to have similar complaints. I think I've found the cause. Despite limiting my peers to 150, there are 9740 open \Device\Afd\Endpoint handles. They seem to be handles for network connections. So it seems that either Azureus or Java itself is leaking handles. I thought I'd first ask our resident Java experts if they know of any such leak within Java before I go delving into Azureus code. Anyone know anything? _________________________ Bitt Faulk
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#268143 - 26/10/2005 23:56 Re: Java Handle Leaks [Re: wfaulk]
mcomb pooh-bah Registered: 31/08/1999 Posts: 1649 Loc: San Carlos, CA	Quote: \Device\Afd\Endpoint I'm not even going to pretend to know what that is, but is it possible that some of these connections are in a FIN_WAIT/TIME_WAIT state? Due to the nature of bittorrent I would expect a lot of connections coming and going even if you've limited the number of actual accepted connections. -Mike _________________________ EmpMenuX - ext3 filesystem - Empeg iTunes integration
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#268144 - 27/10/2005 02:06 Re: Java Handle Leaks [Re: mcomb]
wfaulk carpal tunnel Registered: 25/12/2000 Posts: 16706 Loc: Raleigh, NC US	Yeah, but ten thousand? _________________________ Bitt Faulk
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#268145 - 27/10/2005 10:23 Re: Java Handle Leaks [Re: wfaulk]
andy carpal tunnel Registered: 10/06/1999 Posts: 5914 Loc: Wivenhoe, Essex, UK	Quote: Anyone know anything? I know that it doesn't effect all installs of Azureus. I use it 24/7 with dozens of torrents and have never seen any slow down (not the latest versions anyway, some of the early ones could get a bit chuggy). _________________________ Remind me to change my signature to something more interesting someday
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#268146 - 27/10/2005 14:54 Re: Java Handle Leaks [Re: andy]
wfaulk carpal tunnel Registered: 25/12/2000 Posts: 16706 Loc: Raleigh, NC US	Can you do me a favor and run Process Explorer against it and see if the Java process has a whole load of handles? Maybe your OS install, for some reason, handles having that many open better than mine. _________________________ Bitt Faulk
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#268147 - 27/10/2005 16:24 Re: Java Handle Leaks [Re: wfaulk]
andy carpal tunnel Registered: 10/06/1999 Posts: 5914 Loc: Wivenhoe, Essex, UK	It does indeed have over 40,000 of those handles open. Clearly a leak of some sort. As I say I don't have any performance problems with Azureus. This is on WinXP Pro, 2GB of RAM and a P4 2.8Ghz (with HyperThreading enabled). Azureus is running under Java jre1.5.0_04 on my machine. _________________________ Remind me to change my signature to something more interesting someday
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#268148 - 27/10/2005 21:08 Re: Java Handle Leaks [Re: andy]
schofiel carpal tunnel Registered: 25/06/1999 Posts: 2993 Loc: Wareham, Dorset, UK	What I would suggest is a NETSTAT /A from a CMD command line to observe the state of any socket connects that might be open. _________________________ One of the few remaining Mk1 owners... #00015
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#268149 - 28/10/2005 06:35 Re: Java Handle Leaks [Re: schofiel]
andy carpal tunnel Registered: 10/06/1999 Posts: 5914 Loc: Wivenhoe, Essex, UK	Quote: What I would suggest is a NETSTAT /A from a CMD command line to observe the state of any socket connects that might be open. Mine shows a few dozen BT connections as established, certainly not the 40,000 that Process Explorer shows. _________________________ Remind me to change my signature to something more interesting someday
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