Yes. But thx for the hint anyway. 

Just dropped all indexes and dropped all unneeded Classes. No improvement. 

My greatest concern lies still with the "ORDER BY" clause. I think, all 
other queries could be easily improved by horizontal scaling (more 
server-nodes) and a leaner ClassModel. 

Our current $ORIENT_HOME/bin/server.sh looks like this:

LOG_FILE=$ORIENTDB_HOME/config/orientdb-server-log.properties
WWW_PATH=$ORIENTDB_HOME/www
ORIENTDB_SETTINGS="-Dprofiler.enabled=true -XX:+AggressiveOpts 
-XX:CompileThreshold=200 -XX:+PerfDisableSharedMem"
JAVA_OPTS_SCRIPT="-Djna.nosys=true -XX:+HeapDumpOnOutOfMemoryError 
-Djava.awt.headless=true -Dfile.encoding=UTF8 -Drhino.opt.level=9"

#  -Ddb.mvcc=true -Dstorage.useWAL=false -Dstorage.wal.syncOnPageFlush=false

# ORIENTDB MAXIMUM HEAP. USE SYNTAX -Xmx<memory>, WHERE <memory> HAS THE 
TOTAL MEMORY AND SIZE UNIT. EXAMPLE: -Xmx512m
MAXHEAP="-Xmx512m"
# ORIENTDB MAXIMUM DISKCACHE IN MB, EXAMPLE, ENTER 
-Dstorage.diskCache.bufferSize=8192 FOR 8GB
MAXDISKCACHE="-Dstorage.diskCache.bufferSize=12288"

MAXHEAP and MAXDISKCACHE sizes are okay for 16GB of RAM? 

Regards & thxs,

Sebastian






On Wednesday, July 29, 2015 at 1:35:59 PM UTC+2, scott molinari wrote:
>
> Have you seen this page? 
> http://orientdb.com/docs/last/Performance-Tuning.html
>
> Scott
>

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