Hi,
I've been doing some load testing recently using a jmeter spidering
test, and I notice the Webapp node becomes Disc IO bound long before
anything else runs out which I think is odd since the user is
anonymous, and I would not have expected huge amounts of disk IO.
In trying to locate the source of the problem I have noticed thousands
of large tracebacks appearing in the cocoon.log whenever a 404 is
generated. Each traceback is just under 400 lines long and always
starts with this
2012-12-11 01:02:51,820 ERROR cocoon.handled - Failed to process pipeline
at <map:serialize type="xml"> -
jndi:/localhost/xmlui/aspects/aspects.xmap:96:31
at <map:generate type="file"> -
jndi:/localhost/xmlui/aspects/aspects.xmap:95:55
at <map:serialize type="xml"> -
resource://aspects/ViewArtifacts/sitemap.xmap:218:52
with a base cause of.
Caused by: org.apache.cocoon.ResourceNotFoundException: Page cannot be found
at
org.dspace.app.xmlui.aspect.general.PageNotFoundTransformer.addBody(PageNotFoundTransformer.java:168)
at
org.dspace.app.xmlui.wing.AbstractWingTransformer.startElement(AbstractWingTransformer.java:223)
... 309 more
The ResourceNotFoundException is probably reasonable, but I would like
to eliminate the traceback without disabling the "cocoon.handled"
logger completely.
I would also like to simply pass the 404 the front end httpd with zero
content so that it can deliver an appropriate response, rather than
confusing users with a java + cocoon stack trace.
Any pointers gratefully received.
Ian
(BTW, this probably isnt the source of the IO since the file only gets
to 100M in the 5 minute test, but I would like to eliminate the
growth).
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