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From Antoine Levy-Lambert <>
Subject Re: StreamPumper slow down with ant 1.8.2alpha?
Date Wed, 15 Dec 2010 17:15:33 GMT


On 12/14/2010 12:30 PM, Michael Sunde wrote:
> Hi,
> I recently tested upgrading my build from ant 1.7.1 to ant 1.8.2alpha (1.8.1 broke build)
and the build times doubled (2hrs vs 1hr). Has anyone else noticed this?
> Since StreamPumper is used extensively within ant, any chance this can be addressed?
This should be addressed.

I am not sure which change in PumpStreamHandler or elsewhere is making 
the exec task run slower on Windows in ant 1.8.x compared to 1.7.x

One change [1] to fix a Pipe Broken exception which was happening on 
Ubuntu (bug rep 48789). [2]  could have something to do with it.

I will try to run a performance test (I wonder whether we have one in 
the codebase using attrib ?) on Windows with the current implementatin 
of PumpStreamHandler#stop and with the old one to see if it makes any 
> Michael



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