Lag spikes on Join & Leave events.

After many hours of been unable to find a viable solution to our issues we have not been able to come to conclusion or a fix on how or why these lag spikes are happening. I would just like to say in advance thanks for any time put into reading and responding to this message.


http://paste.ubuntu.com/7400764/ - http://aikar.co/timings.php?url=7400764
http://paste.ubuntu.com/7400783/ - http://aikar.co/timings.php?url=7400783
http://paste.ubuntu.com/7400818/ - http://aikar.co/timings.php?url=7400818


You can see above there are different tests taken at different times. The timings from Aikar will give a different perspective from the ubuntu pastes, the issues that are occurring are from ChromaHillsRPG. Maintenance on the PlayerJoinEvent and PlayerQuitEvent.

Have a look below at what happens on these events.

Code:

 Player player = event.getPlayer();
Main.getInstance().setUpData(player);

Group group = Main.getInstance().getTitle(player);
if(group == null){
     return;
}
player.setScoreboard(Bukkit.getScoreboardManager().getNewScoreboard());
PlayerSkill pSkills = Main.getInstance().pSkills.get(player.getUniqueId().toString());
int mainLevel = pSkills.getLevelHandler().getLevel();
String gName = group.getPrefix();
String prefix = Main.getInstance().getConfig().getString("name-format-1");
String level = Main.getInstance().getConfig().getString("name-format-2").replace("%level%", String.valueOf(mainLevel));
prefix = prefix.replace("%Group-Pre%", gName);
prefix = prefix.replace("%GroupPre%", gName);
prefix = ChatColor.translateAlternateColorCodes('&', prefix);
if(prefix.length() > 16){
     Bukkit.getLogger().severe("HEYO! Too long there for the prefix...." + prefix.length());
     return;
}
level = ChatColor.translateAlternateColorCodes('&', level);
if(!player.hasPermission("rpg.noshow")){
     NametagAPI.setPrefix(player.getName(), prefix);
     NametagAPI.setSuffix(player.getName(), level);
}

Again, thanks in advance for any responses and I can provide more information if needed.
Our in-house developer and no one on our team can work out how the CPU keeps spiking around 15-40% each time a player leaves. We believe it is to do with the plugin accessing the files.

Thanks,
Luke.

 

You could use the bukkitschedular to spread the things you do over several ticks.