Synchronet v3.19b-Win32 (install) has been released (Jan-2022).

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faq:nix [2020/11/23 20:21] – [Recycle] typo digital manfaq:nix [2023/02/08 23:50] (current) – [Maximum Open Files] Replace pgrep with pidof digital man
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   * [[#SDL Errors|How do I work around SDL 1.2 run-time errors]]?   * [[#SDL Errors|How do I work around SDL 1.2 run-time errors]]?
   * [[#Recycle|Why does the recycling of servers/services not work]]?   * [[#Recycle|Why does the recycling of servers/services not work]]?
 +  * [[#Maximum_Open_Files|How do I resolve ERROR 24 (Too many open files)]]?
      
 ===== Flavors ===== ===== Flavors =====
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 The solution is to remove the ''User'' and ''Group'' settings from the ''[[config:sbbs.ini#UNIX]]'' section of ''[[config:sbbs.ini]]'' and then follow the instructions [[howto:Linux_non-root|here]] for running the BBS on Linux as a non-root user (if you haven't already). The solution is to remove the ''User'' and ''Group'' settings from the ''[[config:sbbs.ini#UNIX]]'' section of ''[[config:sbbs.ini]]'' and then follow the instructions [[howto:Linux_non-root|here]] for running the BBS on Linux as a non-root user (if you haven't already).
  
 +===== Maximum Open Files =====
 +**Question:**\\
 +Why am I seeing ''ERROR 24 (Too many open files)'' failures in my error log?
 +
 +**Answer:**\\
 +Versions of Synchronet prior to v3.19c contained a bug with the JavaScript //User// class that could cause a leak of open file descriptors (concurrent opens of the ''[[dir:data]]/user.dat'' file that were never closed). This bug, combined with a long-running //webv4// ''events.ssjs'' issue that could cause a lot of instances of the //User// class to linger in the JavaScript heap (since fixed with a call to ''js.gc()''), could cause "Too many open files" errors to occur.
 +
 +**Answer:**\\
 +You need to increase your maximum number of open files.
 +\\ \\
 +**Checking current open file limits**\\
 +The most reliable way to determine your open file limit is to login to your BBS as a sysop, run the '';SHELL'' [[module:str_cmds|string command]], and at the OS command line, issue the commands below. The hard limit is the systemwide limit, and the soft limit is one that a user can raise (up to the hard limit).
 +
 +To view the soft limit: ''ulimit -Sn''\\
 +To view the hard limit: ''ulimit -Hn''
 +
 +Another method that works on Linux is to search for line beginning with "Max open files" in the file ''/proc/$(pidof sbbs)/limits'':
 +  $ sudo grep "Max open files" /proc/$(pidof sbbs)/limits
 +  Max open files            10000                10000                files     
 +
 +**If you start Synchronet with systemd**\\
 +If you're using [[howto:systemd|systemd]] to start sbbs, edit your service file (usually ''sbbs.service'') by adding the following line in the ''[Service]'' section:
 +
 +<file sbbs.service>
 +LimitNOFILE=10000
 +</file>
 +
 +After adding the line, reload the service file from the command line using ''systemctl daemon-reload''. Finally, restart Synchronet.
 +
 +**If you start Synchronet manually or with a shell script**\\
 +If you start sbbs with a shell script, manually from the command line, or some other similar method, edit ''/etc/security/limits.conf'' to add the lines below.
 +
 +To raise the soft limit for your Synchronet user, add this line:
 +
 +<file limits.conf>
 +yourBBSuser     soft     nofile     10000
 +</file>
 +
 +
 +      
 ===== See Also ===== ===== See Also =====
   * [[:faq:|Frequently Asked Questions]]   * [[:faq:|Frequently Asked Questions]]

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