users@grizzly.java.net

Protecting Grizzly from running out of memory

From: Mark Hig <mark.higginbottom_at_gmail.com>
Date: Mon, 7 Jul 2008 07:27:31 -0700 (PDT)

Hi,

Is there any way of protecting Grizzly from running out of memory. At the
moment I am loading my Grizzly server and, as you would expect, eventually
it runs out of heap space as more and more requests queue up for processing:

07-Jul-2008 15:17:17 com.sun.grizzly.util.WorkerThreadImpl run
SEVERE: WorkerThreadImpl unexpected exception:
java.lang.OutOfMemoryError: Java heap space
07-Jul-2008 15:16:49 com.sun.grizzly.http.DefaultProcessorTask parseRequest
INFO: SocketChannel request linejava.nio.channels.SocketChannel[connected
local=/127.0.0.1:8000 remote=/127.0.0.1:1834] is: R(
xmlns:directive="directive")
07-Jul-2008 15:17:19 com.sun.grizzly.arp.AsyncProcessorTask doTask
SEVERE: Java heap space
java.lang.OutOfMemoryError: Java heap space
07-Jul-2008 15:17:18 com.sun.grizzly.http.DefaultProcessorTask parseRequest
INFO: SocketChannel request linejava.nio.channels.SocketChannel[closed] is:
R( xmlns:directive="directive")
07-Jul-2008 15:17:16 com.sun.grizzly.http.DefaultProcessorTask parseRequest
INFO: SocketChannel request linejava.nio.channels.SocketChannel[closed] is:
R( xmlns:directive="directive")
07-Jul-2008 15:17:12 com.sun.grizzly.arp.AsyncProcessorTask doTask
SEVERE: Java heap space

Is there anyway of identifying that this situation is about to occur OR
after the error has been thrown, to be able to stop the listener, allow
Grizzly to continue processing to clear its queues and hence free up memory
and then to re-start the listener to accept more requests?

Thanks in advance for any help.

Mark
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