It is a causal cluster of 3 instances (1 leader 2 followers). Below are the sysinfo output:
Store Sizes
Count Store
35.00 KiB
Label Store
279.29 KiB
Index Store
717.59 MiB
Schema Store
200.01 KiB
Array Store
595.73 MiB
Logical Log
249.65 MiB
Node Store
51.67 MiB
Property Store
617.91 MiB
Relationship Store
69.67 MiB
String Store
499.27 MiB
Total Store Size
2.98 GiB
ID Allocation
Node ID
3610731
Property ID
15790448
Relationship ID
2116732
Relationship Type ID
321
Page Cache
Faults
324113
Evictions
0
File Mappings
165
Bytes Read
2652151457
Flushes
1714
Eviction Exceptions
0
File Unmappings
116
Bytes Written
14456456
Hit Ratio
99.99%
Usage Ratio
82.75%
Transactions
Last Tx Id
61236137
Current
1
Peak
2
Opened
20988
Committed
20987
Pagecache and Heap config:
- dbms.memory.heap.initial_size: 5G
- dbms.memory.heap.max_size: 5G
- dbms.memory.pagecache.size: 3G
Attached screenshot of consumption applies to all three instances the same.
@abed_halawi
a. what version of Neo4j
b. your heap is defined to use 5G and pagecache is defined to use 3G and this would bring us to 8G. But the JVM, just like any other JVM, does not thus only run on these 2 memory allocations.
Also I might ??? disagree with a dbms.memory.pagecache.size=3G for
Total Store Size
2.98 GiB
is a bit incorrect as this includes the size of all transaction logs, and transaction logs are not loaded into dbms.memry.pagecache.size. Further
Logical Log
249.65 MiB
is also a bit incorrect since it represents the size of the current written txn log ( data/graph.db/neostore.transaction.db*) but you may have multiple files here. And the multiple files are incorrectly used in the 'Total Store Size'. ``Incorrect` in that transaction logs are not loaded into dbms.memory.pagecache.size
Thank you @dana_canzano
a. 3.5.4 (unfortunately couldn't upgrade yet)
b. Do you mean that I should increase pagecache and reduce heap instead? e.g. pagecache = 5G, heap = 3G?
@abed_halawi
a. Neo4j 3.5.x is no longer eligible for new patch releases
b. I would set pagecache to be the size, i.e. last line, as reported by `du -hc data/graph.db/*store.db`*`