On 18/04/13 12:11, Alex Shapiro wrote:
Hello,
Everything I've read about jena working in x64 environment tells that
it should work faster than on x86. But somehow when we migrated our
system form x86 to x64 (Java 6 update 14, both 32 and 64 bit
versions) we encountered a slowdown in jena's performance - it works
about 3 times slower than on 32 bit system. The only difference in
configuration is maximum java heap size parameter - on x86 it is 1Gb
and on x64 it is 2Gb. Does anybody know any reason for such behavior
or how can we fix this?
What is your use of Jena?
The critical x64 issue you've probably been reading about is TDB which
uses memory mapped files on a 64-bit JVM.
Andy
