CODEWITHSUNDEEP
javaneo4j
skme
skme

Reputation: 761

neo4j requires more space than expected

I have a neo4j server including 10 million nodes.

I'm trying to create 1 billion relationships, by adding each node 100 relationships.

I wrote a java embedded program and it updates the relationships.

So far, the execution time looks not bad: approximately 15 million relationships per hour. (using 3GB heap size); But, the disk usage is increasing far more than expected : appr. 6 GB per hour .(15 m relationships..)

For my understanding, relationship takes 33B. So, when adding 15 million relationships (with no properties at all except for the name), it should take about 0.5 GB . instead it takes 10 times more!

Why relationships take so much disk usage?

Upvotes: 2

Views: 128

Answers (2)

Huabing Du
Huabing Du

Reputation: 1

See Code: 

int number = (int) parseLongWithUnit( numberWithUnit );

More than "2G size" can not set by bytes,but you can set XXX files/XXX hours/XXX days/XXX txs

keep_logical_logs for backup/HA sync etc.

Upvotes: 0

Eve Freeman
Eve Freeman

Reputation: 33175

You probably need to clean up your logical log (to be sure, check which files are growing fast). You can configure this via a configuration parameter: keep_logical_logs=false

Upvotes: 3

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