Re: [jboss-user] empty servlet responses
Hi Andreas.
This is just a WAG, but are you using InputStream to read your file? And/or are
you aborting when 0-bytes read? If so, I would change that to -1, as 0-bytes
can occur when the filesystem and/or JVM is busy. I could be off base here, but
a 'while (bytesRead <= 0)' would cause the symptoms you are seeing.
-Steve
PS> Two items you can not turn off on your platform;
- GC
- Kernel level file access -- linux has a background file process running to
reorg files to keep them from becoming fragmented.
Andreas Tschritter wrote:
Hi,
we are running an Axis 1.4 server app inside a JBoss 4.0.2 AS with
basically everything disabled but the tomcat. It is quite simple, for
every call it
gets some XML from another app running on the same AS, adds the SOAP
envelope and returns that.
We test this app with a test client does very frequent requests.
During the test runs from time to time we get an empty response from the
server.
When this happens, it often happens a small number of times during some
seconds and then everything is ok again for one or more hours.
On the server, with Axis logging set to debug and jboss/tomcat logging
set to info, there are no errors and the requests during that time seem
to work
like all the others. Also, there is no garbage collection during that
time. Only thing I've noticed is that the requests at that time take a
bit longer.
It also seems to happen less when logging is set to a low level and much
logging output s produced.
Only the Jboss + apps is running on that machine, nothing else, not even
crons. Its a quad-core AMD64 with 8GB RAM running debian 4.0, the jboss
VM has
5GB heap assigned.
Does anybody have an idea what could cause this or what we could do to
find / fix the issue?
thanks,
Andreas Tschritter
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