Lag in server

[SinisterSmile]

I would like to ask what can cause a little lag like for 3-4s then it disappears. It happens from time to time but it's annoying and the players complain about that.
My dedicated Info:

1. CPU - Intel Xeon Hex Core E5-2640-V1 2.50Ghz
2. Cores/Threads - 6 Cores, 12 Threads
3. RAM - 16GB DDR3 ECC RAM
4. SSD/HDD - 2x 480GB SSD
5. RAID - Hardware RAID HP P220i

I'm using Mysql 5.5 with Navicat Premium.

 

[Deazer]

When you have small lags and friezes on the server appear on your server, there are several reasons that lead to them and I will describe the solution for you.
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1. Increase the memory of the game server process, the default is 3gb (to start and drive 20 windows).
This is done in the WinOS file.:
StartGameServer.bat
By default, for tests (the server immediately loads geo, scripts, etc., there is practically nothing left for the players):

java -server -Dfile.encoding=UTF-8 -Xmx3G -cp config;./* l2.gameserver.GameServer

Optimal for 1k online:

java -server -Dfile.encoding=UTF-8 -Xmx5G -cp config;./* l2.gameserver.GameServer

In *NIX like OS:
GameServer_loop.sh
By default, for tests (the server immediately loads geo, scripts, etc., there is practically nothing left for the players):

java -server -Dfile.encoding=UTF-8 -Xmx3G -cp config:./* l2.gameserver.GameServer > log/stdout.log 2>&1

Optimal for 1k online:

java -server -Dfile.encoding=UTF-8 -Xmx5G -cp config:./* l2.gameserver.GameServer > log/stdout.log 2>&1

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2. Your provider is under a DDoS attack or is located far from your players
2.1 Proxy server connection authserver\config\proxyservers.xml
2.2 Ask the lag player to do

cmd > ping server.ip

and

cmd > tracert server.ip

or the player is not able to master such processes.
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3. Your player plays on a bucket
3.1 That in the game there is an option .menu или .cfg - Buff animation (default 100), set 50 or less
3.2 Download l2antilag