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267 lines
10 KiB
Markdown
267 lines
10 KiB
Markdown
## MySQL Tuning
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The default MySQL configuration is not adequate for use with Playerbots, and will lead to increased disk activity and decreased performance.
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You should add/change the below config options, in your MySQL configuration where ```innodb_buffer_pool_size``` ideally should be 50% of your total RAM:
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```
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#
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# * Fine Tuning
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# Example with 64 GB RAM
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# INNODB
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innodb_buffer_pool_size = 32G
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innodb_io_capacity = 500
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innodb_io_capacity_max = 2500
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innodb_use_fdatasync = ON
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innodb_buffer_pool_instances = 12
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innodb_log_buffer_size = 32M
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# Max age of binary logs - 5 days to prevent binary log pileups
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binlog_expire_logs_seconds = 432000
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# Optionally:
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# Prevent SQL Deadlocks as much as possible
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transaction_isolation="READ-COMMITTED"
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```
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Recommended configuration to extend lifespan of your hard drive:
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- in mysql configuration file change/add line `skip-log-bin` which reduce ~75-90% of writes because skipping binary logging (Use at own risk)
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- in playerbots configuration file enable `AiPlayerbot.DisabledWithoutRealPlayer` to make sure no bots are logged in, while no players are
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- use as few bots as possible or limit yourself to only using altbots to minimize the amount of writes
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## Bot activity profiles and performance
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Before going into the configuration options we need explain the logic a bit. Every update tick of the server its calculated whether a bot can
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or can't be active. An active bots takes and eats alot more resources then an idle bot.
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The following logic is applied to determine whether a bot is active or not, applied in the explained order.
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```
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1. NOT ACTIVE: When server uptime smaller then (max amount of bots * 0.12 seconds)
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2. ALWAYS ACTIVE: When bot is in battleground, instance or raid.
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3. ALWAYS ACTIVE: When in combat and not in party (defend urself)
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4. ALWAYS ACTIVE: If the zone where the bot is located has real players
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5. ALWAYS ACTIVE: When the bots is a member of a guild with real players
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6. ALWAYS ACTIVE: Has real player as master
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7. ALWAYS ACTIVE: if grouped and the leader is a real player
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8. ALWAYS ACTIVE: if in battleground queue
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9. ALWAYS ACTIVE: if looking for group
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10. ALWAYS ACTIVE: If bot has a real player within the radius 300 yards
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11. ALWAYS ACTIVE: When bot is on a friendlist of a online real player
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12. ALWAYS ACTIVE: When bot has more then 10 other bots within the sightDistance, force to spread out
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```
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These rules will always be applied regardless what value you have configured **'AiPlayerbot.BotActiveAlone'**.
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***
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All remaining situations e.g. bots in zones or maps without real players, empty server etc will be configured
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based on the **'AiPlayerbot.BotActiveAlone'** value. That value basically means that the bot has about
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% chance to get active for only a few seconds. Unless in those few seconds one of the above rules
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is triggered then it might result staying active longer.
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Then **'AiPlayerbot.botActiveAloneSmartScale'** basically auto scale the activity percentages
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based on the latency, relative to the configured value of **'AiPlayerbot.BotActiveAlone'**. And only when the bots are in level scope of the configured values of:
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* **'AiPlayerbot.botActiveAloneSmartScaleWhenMinLevel'**
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* **'AiPlayerbot.botActiveAloneSmartScaleWhenMinLevel'**
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***
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#### 1. best performance with high bot count.
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My personal preference is that i keep my bots idle when i am not in the zone or map, which is applied with the following config
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and in this specific requirement it doesnt rlly matter autoscale is on or off but i leave it on.
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```
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AiPlayerbot.BotActiveAlone = 10
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AiPlayerbot.botActiveAloneSmartScale = 1
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AiPlayerbot.botActiveAloneSmartScaleWhenMinLevel = 1
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AiPlayerbot.botActiveAloneSmartScaleWhenMaxLevel = 80
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```
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#### 2. Default; best effort to enforce 100% acitivity but auto adjust when needed
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(prolly best profile with a server with more real players spread over different zones and maps).
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When you want all bots active in all situations but you want to server to compensate the bot
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acitivity based on your latency then use (basically best effort for 100%) :
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```
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AiPlayerbot.BotActiveAlone = 100
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AiPlayerbot.botActiveAloneSmartScale = 1
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AiPlayerbot.botActiveAloneSmartScaleWhenMinLevel = 1
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AiPlayerbot.botActiveAloneSmartScaleWhenMaxLevel = 80
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```
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#### 3. All bots active regardless your latency and performance impact.
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```
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AiPlayerbot.BotActiveAlone = 100
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AiPlayerbot.botActiveAloneSmartScale = 0
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AiPlayerbot.botActiveAloneSmartScaleWhenMinLevel = 1
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AiPlayerbot.botActiveAloneSmartScaleWhenMaxLevel = 80
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```
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#### 4. All bots active and only apply autoscale on a level range (e.g. high levels)
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```
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AiPlayerbot.BotActiveAlone = 100
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AiPlayerbot.botActiveAloneSmartScale = 1
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AiPlayerbot.botActiveAloneSmartScaleWhenMinLevel = 75
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AiPlayerbot.botActiveAloneSmartScaleWhenMaxLevel = 80
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```
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***
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#### Verify bot performance
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Use the command '.server info' to see your server latency. The general latency should be under 70-80 and the percentiles maxed out around
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100, 120, 150. Next to that verify how quick a bot executes your command. It should be pretty much instant. If not to should choose a different profile
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and/or lower your bot amount.
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If you dont use these performance checks it might result into strange and incorrect bot behaviours and/or huge amount of memory footprint growth in a relative short time (OOM)
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##### Reference
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I use 'profile 1' with 5000 bots with an AMD 5700x (4.6ghz, 6 cores), linux, 20GB mem with the following result:
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## Recommended hardware
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```
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Memory
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minimal: 16GB (when all map grids are loaded 11-12GB)
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preferable: 32GB or more
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CPU cores:
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minimal: 4 cores
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preferable: 6 or more cores
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CPU speed:
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minimal: 3000mhz
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preferable: 4400mhz or more
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```
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## Recommended config
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worldserver.conf
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```bash
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# bots might not pickup quests in certain condidations
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Quests.IgnoreAutoAccept = 1
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# performance
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PreloadAllNonInstancedMapGrids = 0
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SetAllCreaturesWithWaypointMovementActive = 0
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DontCacheRandomMovementPaths = 0
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MapUpdate.Threads = 4 or 6
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MapUpdateInterval = 10
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MinWorldUpdateTime = 1
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# no player limit for the bots
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PlayerLimit = 0
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# prevent buggy situations
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LeaveGroupOnLogout.Enabled = 1
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```
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playerbots.conf
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```bash
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#-------------------------------------------------------------------
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# general
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#-------------------------------------------------------------------
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AiPlayerbot.Enabled = 1
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AiPlayerbot.DeleteRandomBotAccounts = 0
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AiPlayerbot.RandomBotAccountPrefix = "rndbot"
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#-------------------------------------------------------------------
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# randombots
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# - RandomBotMaps: 0=Eastern Kingdoms, 1=Kalimdor, 530=Outland, 571=Northrend
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#-------------------------------------------------------------------
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AiPlayerbot.RandomBotMinLevel = 1
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AiPlayerbot.RandomBotMaxLevel = 80
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AiPlayerbot.AutoTeleportForLevel = 1
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AiPlayerbot.RandomBotMaps = 0,1,530,571
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AiPlayerbot.ProbTeleToBankers = 0.25
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AiPlayerbot.RandomBotMaxLevelChance = 0.01
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AiPlayerbot.RandomBotFixedLevel = 0
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AiPlayerbot.DisableRandomLevels = 0
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AiPlayerbot.RandombotStartingLevel = 5
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AiPlayerbot.SyncLevelWithPlayers = 0
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AiPlayerbot.SyncQuestWithPlayer = 1
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AiPlayerbot.AutoDoQuests = 1
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#-------------------------------------------------------------------
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# command (gear: 1 = normal, 2 = uncommon, 3 = rare, 4 = epic, 5 = legendary)
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#-------------------------------------------------------------------
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AiPlayerbot.AutoGearQualityLimit = 4
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AiPlayerbot.AutoGearScoreLimit = 0
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AiPlayerbot.AutoGearCommand = 1
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AiPlayerbot.MaintenanceCommand = 1
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AiPlayerbot.AllowPlayerBots = 1
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AiPlayerbot.AllowGuildBots = 1
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#-------------------------------------------------------------------
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# chat and broadcast (default; RepeatDelay = 2000)
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#-------------------------------------------------------------------
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#AiPlayerbot.RepeatDelay = 2000
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AiPlayerbot.EnableBroadcasts = 0
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AiPlayerbot.RandomBotTalk = 0
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AiPlayerbot.RandomBotEmote = 0
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AiPlayerbot.RandomBotSuggestDungeons = 0
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AiPlayerbot.EnableGreet = 0
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AiPlayerbot.ToxicLinksRepliesChance = 0
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AiPlayerbot.ThunderfuryRepliesChance = 0
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AiPlayerbot.GuildRepliesRate = 0
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AIPlayerbot.GuildFeedback = 0
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AiPlayerbot.RandomBotSayWithoutMaster = 0
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#-------------------------------------------------------------------
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# intervals
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#-------------------------------------------------------------------
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AiPlayerbot.RandomBotUpdateInterval = 20
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AiPlayerbot.RandomBotCountChangeMinInterval = 1800
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AiPlayerbot.RandomBotCountChangeMaxInterval = 7200
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AiPlayerbot.MinRandomBotInWorldTime = 3600
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AiPlayerbot.MaxRandomBotInWorldTime = 1209600
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AiPlayerbot.MinRandomBotRandomizeTime = 7200
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AiPlayerbot.MaxRandomBotRandomizeTime = 1209600
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AiPlayerbot.RandomBotsPerInterval = 60
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AiPlayerbot.MinRandomBotReviveTime = 60
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AiPlayerbot.MaxRandomBotReviveTime = 300
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AiPlayerbot.MinRandomBotTeleportInterval = 3600
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AiPlayerbot.MaxRandomBotTeleportInterval = 18000
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AiPlayerbot.RandomBotInWorldWithRotationDisabled = 31104000
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#-------------------------------------------------------------------
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# distance
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#-------------------------------------------------------------------
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AiPlayerbot.FarDistance = 20.0
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AiPlayerbot.SightDistance = 75.0
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AiPlayerbot.SpellDistance = 28.5
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AiPlayerbot.ShootDistance = 26.0
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AiPlayerbot.ReactDistance = 150.0
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AiPlayerbot.GrindDistance = 75.0
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AiPlayerbot.HealDistance = 38.5
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AiPlayerbot.LootDistance = 25.0
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AiPlayerbot.FleeDistance = 8.0
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AiPlayerbot.TooCloseDistance = 5.0
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AiPlayerbot.MeleeDistance = 1.5
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AiPlayerbot.FollowDistance = 1.5
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AiPlayerbot.WhisperDistance = 6000.0
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AiPlayerbot.ContactDistance = 0.5
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AiPlayerbot.AoeRadius = 10
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AiPlayerbot.RpgDistance = 200
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AiPlayerbot.AggroDistance = 22
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#-------------------------------------------------------------------
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# performance related
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#-------------------------------------------------------------------
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AiPlayerbot.BotActiveAlone = 10 (either use 10% or 100% anything is between is kinda useless)
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AiPlayerbot.botActiveAloneSmartScale = 1
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AiPlayerbot.botActiveAloneSmartScaleWhenMinLevel = 1
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AiPlayerbot.botActiveAloneSmartScaleWhenMaxLevel = 80
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PlayerbotsDatabase.WorkerThreads = 1
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PlayerbotsDatabase.SynchThreads = 2
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```
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## Memory footprint
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The memory footprint does grow in most cases. Consider restarting your server every x hours depending on your
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configuration, hardware, player base/usage.
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e.g. with a cronjob
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..
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