[Neo] out of swap space

Ajay Sharma sharmaajay at gmail.com
Tue Jul 21 14:57:05 CEST 2009


*This is a serious issue....questions the realiability of the database.*

On Tue, Jul 21, 2009 at 2:06 PM, Symeon (Akis) Papadopoulos
<papadop at iti.gr>wrote:

> Hi all
>
> While processing a large Neo graph (in the order of 300k nodes - 2M
> edges), the Java Virtual Machine crashed with the following message:
>
> #
> # An unexpected error has been detected by Java Runtime Environment:
> #
> # java.lang.OutOfMemoryError: requested 1024000 bytes for GrET in
> C:\BUILD_AREA\jdk6_05\hotspot\src\share\vm\utilities\growableArray.cpp.
> Out of swap space?
> #
> #  Internal Error (allocation.inline.hpp:42), pid=308, tid=3572
> #  Error: GrET in
> C:\BUILD_AREA\jdk6_05\hotspot\src\share\vm\utilities\growableArray.cpp
> #
> # Java VM: Java HotSpot(TM) Client VM (10.0-b19 mixed mode, sharing
> windows-x86)
> # An error report file with more information is saved as:
> # [location on my hard drive]\hs_err_pid308.log
> #
> # If you would like to submit a bug report, please visit:
> #   http://java.sun.com/webapps/bugreport/crash.jsp
> #
>
> Most posts I've seen on the net regarding this issue suggest reducing
> the memory used by the JVM by means of a lower -Xmx value.
> Although I tried this (lowering from 1024m to 768m and then to 512m on a
> Windows machine with 2GB RAM), the JVM crash still occurred.
> Are you aware of any Neo-specific programming practices that would help
> avoid this crash?
>
> PS> The same problem was reported by a colleague of mine while
> processing a different graph of similar size on his Windows PC
> (equipped with more memory - 4GB).
>
> Best regards,
> Akis
>
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> User at lists.neo4j.org
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>



-- 
Ajay Sharma


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