Hi, please disregard my last email. I had un-commented the
e.printStackTrace() after the Session loop for diagnostic reasons. So,
those traces are benign, although it is still a mystery why my Session
ended abruptly in the one case.
So, I continued my testing of rc3-flowcontrol under very heavy load, and
eventually crashed with OutOfMemory Exceptions:
Exception in thread "PortWatcher Thread for 127.0.0.1"
java.lang.OutOfMemoryError: unable to create new native thread
at java.lang.Thread.start0(Native Method)
at java.lang.Thread.start(Thread.java:640)
at
com.jcraft.jsch.ChannelDirectTCPIP.connect(ChannelDirectTCPIP.java:70)
at com.jcraft.jsch.PortWatcher.run(PortWatcher.java:176)
at java.lang.Thread.run(Thread.java:662)
I did a "jstack" on the JVM to get a full thread dump. What I found was
that there were 1,600+ threads all in the current state:
"Thread-934145" prio=10 tid=0x00000000578a0000 nid=0x1a2b in
Object.wait() [0x0000000069780000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
at java.lang.Object.wait(Object.java:485)
at com.jcraft.jsch.Channel$3.run(Channel.java:470)
- locked <0x00000007b8e8fdb8> (a [B)
at java.lang.Thread.run(Thread.java:662)
So I assume these threads are not being cleaned up properly?
- Scott
On 2/6/2012 6:09 PM, B. Scott Smith wrote:
This ran much better. However, under heavy load, I was able to cause
the following error, which ended my whole Session. On Windows, I get:
java.net.SocketException: Connection reset
at java.net.SocketInputStream.read(Unknown Source)
at com.jcraft.jsch.IO.getByte(IO.java:82)
at com.jcraft.jsch.Session.read(Session.java:853)
at com.jcraft.jsch.Session.run(Session.java:1289)
at java.lang.Thread.run(Unknown Source)
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