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PrimaryIndex count

user13726488Apr 2 2014 — edited Apr 3 2014

I have a doubt about cache.

The Environment is transactional and the configuration is the default options.

I have Primary Index like that:

private PrimaryIndex<Long, EnSomeEntity> pkSomeEntityById;

I did record on it about 100000000 (one hundred million) elements.

A huge amount of data about 80G of data.

1- I did a count on it it returned the one hundred million elements count but id delayed about 15 minutes.

How I did:

pkSomeEntity.count();

2- I did the count again and it returned in 8 seconds.

3- I did restart the machine; now I did the count on it it delayed about 15 minutes again.

4- I did the sarch again (after restarting) the count returned in 8 seconds.

This cache is handled by the Berkeley DB or it is the Disk Cache. (the disk is not SDD, it's a 'normal' SATA).

What's the best way to handle cache with this huge amount of data?
This post has been answered by Greybird-Oracle on Apr 3 2014
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Locked on May 1 2014
Added on Apr 2 2014
#berkeley-db-java-edition
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