Re: [Neo] I/O load in Neo during traversals

2009-12-10 Thread Rick Bullotta
To: Neo user discussions Subject: Re: [Neo] I/O load in Neo during traversals This probably (again) has to do with OS and file system in use. If the string store is larger than assigned memory for it (see http://wiki.neo4j.org/content/Neo_Performance_Guide#Tuning_memory_mapped_I.2 FO) depending on

Re: [Neo] I/O load in Neo during traversals

2009-12-10 Thread Johan Svensson
This probably (again) has to do with OS and file system in use. If the string store is larger than assigned memory for it (see http://wiki.neo4j.org/content/Neo_Performance_Guide#Tuning_memory_mapped_I.2FO) depending on access patterns the memory will be spread out over the store (so a read/write c

[Neo] I/O load in Neo during traversals

2009-12-09 Thread Rick Bullotta
When doing some large traversal testing (no writes/updates), I noticed that the neostore.propertystore.db.strings file was seeing a lot of read I/O (as expected) but also a huge amount of write I/O (almost 5X the read I/O rate). Out of curiosity, what is the write activity that needs to occur when