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ID Category Severity Reproducibility Date Submitted Last Update
0001351 [Resin] minor always 09-18-06 09:13 02-12-07 10:39
Reporter ferg View Status public  
Assigned To ferg
Priority normal Resolution fixed Platform
Status closed   OS
Projection none   OS Version
ETA none Fixed in Version 3.1.1 Product Version
  Product Build
Summary 0001351: improved DOS support
Description (rep by Matthias Jiderhamn)

We are having some trouble with recurring DDoS/DoS attacks on one of
our Resin servers. While being attacked, it seems most of the threads
in the thread pool are connected but waiting for request input inside JNI code:

   com.caucho.vfs.JniStream.readNative(Native Method)
   com.caucho.vfs.JniStream.read(JniStream.java:98)
   com.caucho.vfs.ReadStream.readBuffer(ReadStream.java:922)
   com.caucho.vfs.ReadStream.waitForRead(ReadStream.java:289)
   com.caucho.server.port.TcpConnection.run(TcpConnection.java:386)
   com.caucho.util.ThreadPool.runTasks(ThreadPool.java:507)
   com.caucho.util.ThreadPool.run(ThreadPool.java:433)
   java.lang.Thread.run(Thread.java:595)


Could setting a lower read-timeout
(http://www.caucho.com/resin-3.0/config/tuning.xtp#Timeouts) [^] ease the effect?
What would be sensible values?
Steps To Reproduce
Additional Information
Attached Files

- Relationships

- Notes
(0001760)
ferg
02-12-07 10:39

Added throttle-concurrent-max to <http>, e.g.

<http port="80" throttle-concurrent-max="16"/>

 

- Issue History
Date Modified Username Field Change
09-18-06 09:13 ferg New Issue
09-19-06 02:55 mate Issue Monitored: mate
02-12-07 10:39 ferg Note Added: 0001760
02-12-07 10:39 ferg Assigned To  => ferg
02-12-07 10:39 ferg Status new => closed
02-12-07 10:39 ferg Resolution open => fixed
02-12-07 10:39 ferg Fixed in Version  => 3.1.1


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