Hi, I am running use the rest api, anything that requires multiple paths to
be returned is extremely slow, are there configuration properties I can
update in the conf directory...
I am running neo4j-community-2.3.0-M01 and have a box with 18G free ram.
If I want to find something that considers all types of edges
(relationships), I was using the following json, can someone verify that
this is correct:
curl -v -X POST -H 'Content-Type: application/json' -H 'Accept:
application/json; charset=UTF-8' -d '{ "to":
"http://localhost:7474/db/data/node/79365","cost_property": "weight",
"algorithm": "dijkstra" }' http://localhost:7474/db/data/node/902/path
I simply omitted the relationships attribute, I limit the search to a
single type of edge then it works but if I consider multiple paths, the
query times out. This should be straightforward I would think.
I also updated conf/neo4j.properties with the following values, please
advise if there is anything else I should do to optimize the search:
################################################################
# Neo4j
#
# neo4j.properties - database tuning parameters
#
################################################################
# Enable this to be able to upgrade a store from an older version.
#allow_store_upgrade=true
# The amount of memory to use for mapping the store files, in bytes (or
# kilobytes with the 'k' suffix, megabytes with 'm' and gigabytes with 'g').
# If Neo4j is running on a dedicated server, then it is generally
recommended
# to leave about 2-4 gigabytes for the operating system, give the JVM enough
# heap to hold all your transaction state and query context, and then leave
the
# rest for the page cache.
# The default page cache memory assumes the machine is dedicated to running
# Neo4j, and is heuristically set to 75% of RAM minus the max Java heap
size.
dbms.pagecache.memory=10g
# Enable this to specify a parser other than the default one.
#cypher_parser_version=2.0
# Keep logical logs, helps debugging but uses more disk space, enabled for
# legacy reasons To limit space needed to store historical logs use values
such
# as: "7 days" or "100M size" instead of "true".
#keep_logical_logs=7 days
# Autoindexing
# Enable auto-indexing for nodes, default is false.
#node_auto_indexing=true
# The node property keys to be auto-indexed, if enabled.
#node_keys_indexable=name,age
# Enable auto-indexing for relationships, default is false.
relationship_auto_indexing=true
# The relationship property keys to be auto-indexed, if enabled.
#relationship_keys_indexable=name,age
relationship_keys_indexable=weight
# Enable shell server so that remote clients can connect via Neo4j shell.
#remote_shell_enabled=true
# The network interface IP the shell will listen on (use 0.0.0 for all
interfaces).
#remote_shell_host=127.0.0.1
# The port the shell will listen on, default is 1337.
#remote_shell_port=1337
# The type of cache to use for nodes and relationships.
#cache_type=soft
use_memory_mapped_buffers=true
neostore.nodestore.db.mapped_memory=5G
neostore.relationshipstore.db.mapped_memory=5G
neostore.propertystore.db.mapped_memory=5G
neostore.propertystore.db.strings.mapped_memory=5G
neostore.propertystore.db.arrays.mapped_memory=5G
cache_type=gcr
node_cache_size=5G
relationship_cache_size=5G
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