TDB 32-bit heap size

Hi,

I know that TDB uses different caching strategies on 32-bit vs 64-bit, and that on 32-bit a large heap size (>=1GB) is recommended. If I want to configure TDB for significantly smaller-scale usage on 32-bit (and I don't mind about reduced caching/worse performance), is it possible to configure a smaller heap size, or will I just cause out of memory exceptions?

Many thanks for your help!

tdb

asked 15 Jan, 09:53

knightni
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One Answer:

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You'll probably run into problems because some internal cache sizes are fixed currently (unsatisfactory) but the only real way to know is to try.

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answered 15 Jan, 12:29

AndyS ♦
9.7k●2●7
accept rate: 32%

Thanks a lot!

(17 Jan, 10:15) knightni

One more question (sorry!): are there any user-adjustable caches, and could you point me at how to adjust them if so?

(17 Jan, 10:29) knightni

No, not really; you'd have to dive into the code. There ought to be ... but there aren't. They are less significant on 64 bit because the main indexes use OS memory mapped files, not Java caches (as well as more RAM anyway in all likelihood).

(17 Jan, 10:52) AndyS ♦

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Asked: 15 Jan, 09:53

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Last updated: 17 Jan, 10:52

TDB 32-bit heap size

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