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{{TOC|side}}
These parameters can be configured by creating a new shortcut on your desktop and then adding the appropriate option in the target line.
{{Feature|informative|Most of the following parameters can be set with the [[Arma 3: Launcher]].}}


== Steam ==
# Choose the game in Steam\Library
# Right click on the game
# Select properties
# Hit "Set launch options"
; Example: {{hl|c= -nosplash -mod=test;x\test;c:\arma3\test2}}
== Windows ==
When working with shortcuts, cmd launch options: there is max characters limit for the executing line, use '''-par''' (see: [[Startup Parameters Config File]]) to avoid it.
{| class="valign-top"
! Startup Command Line
! parameters file
|-
|
Arma3.exe -par="D:\Arma 3 Startup Parameters.txt"
|
-skipIntro
-noSplash
-enableHT
-hugePages
-noLogs
|}
<!--
== Available Parameters ==
{{Columns|5|
* adapter
* autoinit
* autotest
* bandwidthAlg
* bepath
* beta
* buldozer
* cfg
* checkSignatures
* client
* command
* config
* connect
* cpuCount
* crashDiag
* d3dNoLock
* d3dNoMultiCB
* debug
* debugCallExtension
* disableServerThread
* {{GVI|arma3|2.14|size= 0.75}} dumpAddonDependencyGraph
* doNothing
* enableHT
* exThreads
* filePatching
* host
* hugepages
* init
* ip
* {{GVI|arma3|2.04|size= 0.75}} language
* {{GVI|arma3|1.98|size= 0.75}} limitFPS
* loadMissionToMemory
* malloc
* {{GVI|arma3|2.14|size= 0.75}} maxFileCacheSize
* maxMem
* maxVRAM
* mod
* name
* netlog
* {{GVI|arma3|1.30|size= 0.75}} networkDiagInterval
* noCB
* noFilePatching
* noFreezeCheck
* noLand
* noLogs
* noPause
* {{GVI|arma3|2.10|size= 0.75}} noPauseAudio
* noSound
* noSplash
* par
* password
* pid
* {{GVI|arma3|2.06|size= 0.75}} preprocDefine
* port
* posX
* posY
* profiles
* ranking
* server
* serverMod
* {{GVI|arma3|2.10|size= 0.75}} setThreadCharacteristics
* setupHost
* showScriptErrors
* skipIntro
* unit
* window
* world
* worldCfg
}}-->
=== Display Options ===
==== -window ====
Displays {{arma3}} windowed instead of full screen. Screen resolution / window size are set in [[arma3.cfg]].
; Example
arma3.exe -window
==== -posX ====
Sets the default X Position of the Window.
; Example
arma3.exe -posX=50
==== -posY ====
Sets the default Y Position of the Window.
; Example
arma3.exe -posY=50
==== -adapter ====
Sets the default Video Adapter.
; Example
arma3.exe -adapter=MISSING_AN_EXAMPLE
=== Game Loading Speedup ===
==== -noSplash ====
-noSplash is a startup option that allows you to bypass the splash screens on startup of {{arma3}}.
{{Feature|informative|Real speed-up gained with this is likely to be negligible in {{arma3}}, as the loading screens are handled in parallel with the game data being loaded, and the loading itself takes quite long thanks to the amount of data needed.}}
==== -skipIntro ====
Disables world intros in the main menu permanently.
{{Feature|informative|Real speed-up gained with this is likely to be negligible in {{arma3}}, as the loading screens are handled in parallel with the game data being loaded, and the loading itself takes quite long thanks to the amount of data needed.}}
==== -world ====
<string>Select a world loaded by default. Example: -world=Utes.<br> For faster game loading (no default world loaded and world intro in the main menu, ''only at game start'', disabled): -world=empty.
==== -worldCfg ====
<string>Init Landscape by the given world config
=== Profile Options ===
==== -name ====
<string>Sets the profile name.
==== -profiles ====
<string> Location of user-profile folder. If a custom path is set, default files and folders (logFiles, AnimDataCache, DataCache, SteamPreviewCache....) located by default in {{hl|%localappdata%/Arma 3}} will be created in that new location. However, old files will stay in the old location and will not be copied.
'''-profiles''' is a startup option allowing you to choose an alternate location for the user profile files, such as downloaded missions and .cfg files.
The windows user account would need permissions to write to the folder of choice.
; An example might be like this: {{hl|c= "C:\arma3\arma3.exe" -profiles=C:\arma3\Profiles}}
; or: {{hl|c= "C:\arma3\Arma3.exe" -profiles=Profiles}}
would store all your profiles/configs/downloaded content into your ROOT {{arma3}} folder under the folder name "Profiles"
==== -unit ====
<number> parameter passes a unit's ID number to the binary, translates to ''<nowiki>https://units.arma3.com/my-units#?unit=<number></nowiki>''
=== Misc. ===
==== -buldozer ====
Starts [[Buldozer]] mode.
==== -noLand ====
Starts with no world loaded. (Used for [[Buldozer]])
==== -noSound ====
Disables sound output.
==== -doNothing ====
Engine closes immediately after detecting this option.
==== [[Arma: Mod Folders|-mod]] ====
<string>Loads the specified sub-folders for different mods. Separated by semi-colons. Absolute path and multiple stacked folders are possible.<br>'''In Linux''' multiple folders arguments need the following separation syntax: -mod=mod1\;mod2\;mod3<br>This setting always auto-disable in-game mod/extension management (in UI menu).<br>
'''Complex example:'''
{{hl|c= -mod=test;x\test;c:\arma3\test2}}
* '''"test"''' is located in the {{arma3}} installation folder ("Arma 3\test") (relative path)
* '''"x\test"''' is in the installation folder ("Arma 3\x\test") (relative path; subfolder)
* '''"c:\arma3\test2"''' is in "c:\arma3\test2" (absolute path)
"Relative path" starts from, or is rooted at, the directory from where the {{arma3}} executable has been started, and is not always the same where the executable is, like in betas.<br>
Usually this is the same as the installation path and the same of what is written in Windows registry. But if you copy or symlink the necessary file and folders, you may have different roots.
It is useful when having multiple dedicated servers.
=== Client Network Options ===
==== -connect ====
<ip>Server IP to connect to.
==== -port ====
<number>Server port to connect to.
==== -password ====
<string>Server password to connect to.
==== -host ====
Start a non-dedicated multiplayer host. See [[:File:a3_startup_parameters_host.png|reference image]]
=== Server Options ===
==== -setupHost ====
Start the game in the setup server display, works with the client exe. See [[:File:a3_startup_parameters_createhost.png|reference image]]
==== -server ====
Start a [[Arma 3: Dedicated Server|dedicated server]]. Not needed for the dedicated server exe.
===== -port =====
<number>Port to have dedicated server listen on.
===== -pid =====
<filename> File to write the server's PID (process ID) to. The file is removed automatically when the exe is stopped. Only works for dedicated servers.
===== -ranking =====
<filename>'''-ranking''' is a startup option allowing you to output ranking info or otherwise know as player stats.
The windows user account would need permissions to write to the folder of choice.
; An example might be like this: {{hl|c= "C:\arma3\Arma3.exe" -ranking=C:\arma3\ranking.log}}
Output sample:
<syntaxhighlight lang="cpp">
class Player1
{
name = "PlayerName";
killsInfantry = 71;
killsSoft = 3;
killsArmor = 5;
killsAir = 5;
killsPlayers = 0;
customScore = 0;
killsTotal = 84;
killed = 3;
};
</syntaxhighlight>
==== -netlog ====
Enables multiplayer network traffic logging. For more details see [[ArmA:_Server_configuration|server configuration]].
==== -cfg ====
<filename> Selects the [[basic.cfg|Server Basic Config file]]. Config file for server specific settings like network performance tuning.
{{Feature|important|Using this parameter overrides the game config ({{hl|Documents\Arma 3\Arma3.cfg}}); use at your own risk on clients.}}
==== -config ====
<filename> Selects the [[Arma 3: Server Config File|Server Config File]]. Config file for server specific settings like admin password and mission selection.
==== -profiles ====
<path> Path to the folder containing server profile. By default, server logs are written to server profile folder. If folder doesn't exist, it will be automatically created.
Does not work on Linux, no profile will be created or used; instead, remove this parameter and the profile will be created in {{hl|~/.local/share/Arma 3 - Other Profiles}}
==== -bepath ====
<path> By default BattlEye will create ''BattlEye'' folder inside server profile folder. With -bepath param it is possible to specify a custom folder. For example:<br>-bepath=C:\MyBattlEyeFolder, or if the path contains spaces, "-bepath=C:\Users\KK\Desktop\Some Folder With Spaces" (enclosed in quotes).
==== -ip ====
<ip> Command to enable support for Multihome servers. Allows server process to use defined available IP address. (b1.57.76934)
==== -par ====
<filename>  Command to read startup parameters from a file. For more details see [[Startup_Parameters_Config_File|Startup parameters config file]]
==== -client ====
Launch as client (console). Useful for [[Arma 3: Headless Client|headless clients]].
==== -loadMissionToMemory ====
Server will load mission into memory on first client downloading it. Then it keeps it pre-processed pre-cached in memory for next clients, saving some server CPU cycles.
==== -autoInit ====
Automatically initialize mission just like first client does.
Note: Server config file (server.cfg) must contain "Persistent=1;", if it is 0 autoInit skips. <br> Warning: This will break the [[Arma_3_Mission_Parameters]] function, so do not use it when you work with mission parameters, only default values are returned!
==== -serverMod ====
<string> Loads the specified sub-folders for different server-side (not broadcasted to clients) mods. Separated by semi-colons. Absolute path and multiple stacked folders are possible.
In Linux multiple folders arguments need the following separation syntax: -mod=mod1\;mod2\;mod3.
==== -disableServerThread ====
Option to disable the server send messaging thread in case of random crashing (may also decrease performance of server on multicore CPUs)
==== -bandwidthAlg ====
<interger>Set to 2 to use a new experimental networking algorithm that might be better than the default one.
==== -limitFPS ====
<integer> {{GVI|arma3|1.98}} Limites the server FPS to given integer between 5-1000 FPS (default 50).
==== -networkDiagInterval ====
{{GVI|arma3|1.30}} <integer> Polls the status of bandwidth, traffic and similar data every X seconds. Since {{GVI|arma3|2.18}} is also logs size and count of [[publicVariable|public variables]] when using the ''Profiling binary''.
=== Performance ===
{| class="wikitable sortable valign-top" width="100%"
! Parameter
! class="unsortable" | Description
|-
| style="white-space: nowrap" | -maxMem=''<number>'' || Overrides memory allocation limit to a certain amount (in megabytes).
{{Feature|important|
Until {{arma3}} v2.14 there was a bug on the Linux server binary where it parses the maxMem value as a signed integer, therefore making 4096 interpreted as a negative value;<br>
in order to avoid this issue, use values like {{hl|2047}}, {{hl|4095}}, {{hl|8191}}, {{hl|16383}}, {{hl|32767}} (2048 -1, 4096 -1 etc).
}}
1024 MiB is a hard-coded minimum (anything lower falls back to 1024). The maximum is influenced by your operating system (any value over the maximum will be reverted to this value):
* 32-bit Windows + 32-bit game: 2047
* 64-bit Windows + 32-bit game: 3071
* 64-bit Windows + 64-bit game: (physical memory * 4) / 5
'''Without the -maxMem parameter the engine attempts to set this parameter internaly to a reasonable value often defaulting to max values as described above.''' <br> The file cache is always excluded from the virtual address limit, see our developers blog: https://www.bistudio.com/blog/breaking-the-32-bit-barrier.
'''Note that setting maxMem to 2000 does not mean that the game will never allocate more then 2000 MiB. It says that the game will do everything in its power to not cross this limit. <br> In general, it makes sense not using this parameter at all and only resort to it in case you experience issues with memory.'''
|-
| style="white-space: nowrap" | -maxVRAM=''<number>'' || Defines Video Memory allocation limit to number (in megabytes). Use to resolve e.g. Windows problem: http://support.microsoft.com/kb/2026022/en-us?p=1.<br>Minimum value is 128 MiB (anything lower falls back to 128). The value is ignored (under DX11) if engine properly detected VRAM size, minus 20% reserve with ceiling limit 300MB max..
|-
| -maxFileCacheSize || {{GVI|arma3|2.14}} Sets the default filecache size (when files are loaded from disk, they are cached in RAM. If the cache is full, the oldest file is thrown out).
{{Feature|informative|
* Default size was either {{hl|maxMemory - 448 MB}} or if you had more than 2 GB of memory available to {{arma3}}, it would be limited to max 2048 MB.
* Setting lower than 1 GB is not recommended.
* Minimum possible value is 512 MB
}}
|-
| -noCB || Turns off multicore use. It slows down rendering but may resolve visual glitches.
|-
| -cpuCount=''<number>'' || Change to a number less or equal than numbers of available cores. This will override auto detection (which equate to native cores).
The best way to simulate dual core on quad core is to use -cpuCount=2 when you run the game and then change the affinity to 2 cores to make sure additional cores can never be used when some over-scheduling happens.<br>
It might be also possible to set the affinity in the OS before you launch the process, that would work as well.
|-
| style="white-space: nowrap" | -exThreads=''<number>'' || Change to a number 0,1,3,5,7. This will override auto detection (which use 3 for dualcore and 7 for quadcore).
All file operations go through a dedicated thread. This offloads some processing from the main thread, however it adds some overhead at the same time.<br>
The reason why threaded file ops were implemented was to serve as a basement for other threads ops. <br> When multiple threads are running at the same time, OS is scheduling them on different cores.<br>
Geometry and Texture loading (both done by the same thread) are scheduled on different cores outside the main rendering loop at the same time with the main rendering loop.
{| class="wikitable sortable valign-top" width="100%"
|+ Ex(tra)threads table
! Parameter
! class="unsortable" | Description
|-
! Number !! Geometry loading !! Texture loading !! File operations
|-
! 0
| 0 || 0 || 0
|-
! 1
| 0 || 0 || 1
|-
! 3
| 0 || 1 || 1
|-
! 5
| 1 || 0 || 1
|-
! 7
| 1 || 1 || 1
|-
|}
|-
| [[Arma 3: Custom Memory Allocator|-malloc]]=''<string>'' || Sets the particular memory allocator to be used. Significantly affects both performance and stability of the game. [[Arma 3: Custom Memory Allocator|More details]].
|-
| -noLogs || Be aware this means none errors saved to RPT file (report log). Yet in case of crash the fault address block info is saved.<br>More details {{Link|link= http://forums.bistudio.com/showthread.php?159155-quot-nologs-quot-may-improve-performance-no-stuttering-read-details|text= here}}.
|-
| -enableHT || Enables the use of all logical CPU cores for parallel tasks processing. If your CPU does not support Hyper-Threading or similar technology, this parameter is ignored. When disabled, only physical cores are used.<br>
'''Note that enabling this parameter may slightly improve or harm the performance depending on a scenario'''.
'''This parameter may be overridden by -cpuCount so if you want to use the maximum number of CPU cores use "-enableHT" without "-cpuCount"'''.
|-
| -hugepages || Enables hugepages with the default memory allocator ([[Arma 3: Custom Memory Allocator|malloc]]) for both client/server (https://forums.bistudio.com/topic/160288-arma-3-stable-server-166-performance-binary-feedback/?page=74#comment-3130011)
|-
| -setThreadCharacteristics
| {{GVI|arma3|2.10}} Registers the game's executable as "Game" in Windows for performance improvements. {{Feature|warning|This flag can freeze the whole Operating System if running Windows Server!}}
|}
=== Developer Options ===
{| class="wikitable sortable valign-top" width="100%"
! Parameter
! class="unsortable" | Description
|-
| -noPause || Allow the game running even when its window does not have focus (i.e. running in the background)
|-
| -noPauseAudio || {{GVI|arma3|2.10}} Keeps audio running in background while tabbed out. Should be used together with '''-noPause''' to work correctly
|-
| -showScriptErrors || Introduced to show errors in scripts on-screen. In [[:Category:Eden Editor|Eden Editor]], script errors are always shown, even when this parameter is not used.
|-
| -debug || Enables more verbose error logging. See [[Arma 3: Debug Mode]]
|-
| -noFreezeCheck || Disables the freeze check. It creates otherwise max 4 dumps per game run in total - 2 per distinct freeze. Similar to [[Crash Files]].
|-
| -noLogs || Be aware this means none errors saved to RPT file (report log). Yet in case of crash the fault address block info is saved.<br>More details {{Link|http://forums.bistudio.com/showthread.php?159155-quot-nologs-quot-may-improve-performance-no-stuttering-read-details|here}}.
|-
| -filePatching || Allow the game to load unpacked data. For more info see [[CMA:DevelopmentSetup]] (since {{arma3}} 1.49+).
|-
| -init=<command> || Run scripting command once in the main menu. For example to start a certain SP mission of choice automatically. Example: -init=playMission["","M04Saboteur.Sara"]. <br> See also [[playMission]]. The Mission has to reside in the "arma3\Missions" folder, NOT the user directory.
|-
| style="white-space: nowrap" | "<path>\mission.sqm" || Load a mission directly in the editor. Example: "c:\arma3\users\myUser\missions\myMission.intro\mission.sqm"
|-
| -[[Arma 3: Startup Parameters#autotest|autotest]] || Loads automatically a series of defined missions and on error writes to a log file.
The parameter can be used to automatically run a series of test missions. For example FPS measurement or scripting validation.
* The game runs in special mode. It runs all missions from the given list.
* If any mission fails (ends with other than END1), it is logged into the [[arma.RPT|rpt file]] (search: <autotest).
* In case of any fail, the game also returns an errorlevel to DOS. This can be used to issue an notification by a secondary application.
; Launch {{arma3}} with: {{hl|c= -autotest=c:\arma3\autotest\autotest.cfg}}
The {{hl|autotest.cfg}} looks like:
<syntaxhighlight lang="cpp">
class TestMissions
{
class TestCase01
{
campaign = "";
mission = "autotest\TestCase01.Desert_E"; // relative path to the arma directory
};
class TestCase02
{
campaign = "";
mission = "C:\arma3\autotest\TestCase02.Desert_E"; // absolute path
};
};
</syntaxhighlight>
{{Feature|important|If {{hl|-profiles}} is used, the relative path is relative to the specified profile path.}}
Rpt entry:
<syntaxhighlight lang="html">
<AutoTest result="FAILED">
EndMode = LOSER
Mission = autotest\TestCase01.Desert_E
</AutoTest>
</syntaxhighlight>
If possible use simple worlds, like Desert, to keep the loading times short. The [[startLoadingScreen|loading screen]] command might be useful as well to speed up task that need no rendering.
|-
| -beta=<string> || Loads the specified beta sub-folders. Separated by semi-colons. Absolute path and multiple stacked folders are possible.<br>'''In Linux''' multiple folders arguments need the following separation syntax: -mod=betamod1\;betamod2\;betamod3<br>This allows use of beta build w/o disabling in-game mod/extension management (in UI menu).
|-
| -checkSignatures || Provide a thorough test of all signatures of all loaded banks at the start game. Output is in {{hl|.rpt}} file.
|-
| -d3dNoLock || Doesn't lock the VRAM
|-
| -d3dNoMultiCB || D3D uses Single Constant Buffers instead of Multiple Constant Buffers
|-
<!--
| -crashDiag || extra crash-logging in performance binary, added on v18 (https://forums.bistudio.com/topic/160288-arma-3-stable-server-154-performance-binary-feedback/?p=2979101)
|-
-->
| -noFilePatching || {{Color|red|(deprecated)}} Ensures that only PBOs are loaded and NO unpacked data. It was replaced in favor of -filePatching parameter.
|-
| -debugCallExtension || Logs extension calls in the rpt log like this: [[File:arma3-startup_parameter_debugCallExtension_output.png]]
|-
| -command=<name> || Creates {{Link|https://en.wikipedia.org/wiki/Named_pipe|named pipe}} "\\.\pipe\name" for receiving predefined set of commands. See [[Arma 3: Named Pipe]]
|-
| -language=<language>
|
{{GVI|arma3|2.04}} Starts client with preferred language. See {{Link|Stringtable.xml#Supported Languages}} for a list of supported languages. '''Case-sensitive!''' (className column)<br>
{{GVI|arma3|2.18}} The parameter now works properly
|-
| -preprocDefine=<macro> || {{GVI|arma3|2.06}} Defines a macro and optionally its value. Multiple macro can be defined by using this parameter multiple times.<br>
-preprocDefine="CMD__MACRONAME=MACROVALUE"
-preprocDefine=CMD__MACRONAME
-preprocDefine=CMD__MACRO1 -preprocDefine=CMD__MACRO2
{{Feature|important|The macro name '''will''' start with {{hl|CMD__}}, the engine automatically adding the prefix if it is not present.
<syntaxhighlight lang="cpp">-preprocDefine=MACRO // will be CMD__MACRO</syntaxhighlight>
}}
|-
| -dumpAddonDependencyGraph || {{GVI|arma3|2.14}} dumps {{Link|https://en.wikipedia.org/wiki/Graphviz|Graphviz}} text file into the RPT directory with a graph of all addon dependencies (<syntaxhighlight lang="cpp" inline>requiredAddons</syntaxhighlight>)
|}
== Path Definition ==
There are a few basics to keep in mind when defining path as part of a parameter.
=== Spaces ===
The path '''and''' -profiles need to be enclosed with quotes if it contains spaces, e.g {{hl|c= "-profiles=c:\arma 3\profiles"}}.
=== Relative vs Absolute ===
You can define most, if not all path in both ways.
; Relative
: {{hl|c= -profiles=profiles}}
; Absolute
: {{hl|c= -profiles=C:\arma3\profiles}}
The relative path is normally based on the game main folder, where the exe resides in. Using beta patches does NOT change this!
However when you use -profiles, some commands use this path defined there as base.
[[Category: Startup Parameters]]

Latest revision as of 18:02, 18 October 2024

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