Difference between revisions of "FreeSWITCH DB In RAMdrive"

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(Discussion)
(Example)
Line 11: Line 11:
 
     <param name="core-db-name" value="/usr/local/freeswitch/ramdisk" />
 
     <param name="core-db-name" value="/usr/local/freeswitch/ramdisk" />
  
=Example=
+
==Example==
    mkdir /ram
+
     mount -t tmpfs tmpfs /ram
+
in /etc/fstab:
    cd /usr/local/freeswitch
+
 
     mv db db.old
+
     tmpfs   /usr/local/freeswitch/ramdb     tmpfs  defaults        0 0
     ln -s /ram db
+
 
    then restart FreeSWITCH
+
Then, in freeswitch/conf/autoload_configs/switch.conf.xml uncomment:
 +
 
 +
     <param name="core-db-name" value="/usr/local/freeswitch/ramdisk/core.db" />
 +
 
 +
And set it to the path you created in fstab.  Make sure you also create the directory.
 +
 
 +
Restart FreeSWITCH
  
 
=See Also=
 
=See Also=
 
[[Performance_testing_and_configurations#FreeSWITCH.27s_core.db_I.2FO_bottleneck]]
 
[[Performance_testing_and_configurations#FreeSWITCH.27s_core.db_I.2FO_bottleneck]]

Revision as of 20:52, 21 September 2012

Contents

Introduction

Moving the ephemeral databases to a RAM disk will greatly improve performance, and it is CRITICAL to move them to a RAM disk if you use SSDs. More info on running FreeSWITCH on SSDs is here.

Discussion

Some Linux distros have quirks that cause SQLite to behave poorly when scaling up. In other cases, disk I/O becomes a bottleneck to FreeSWITCH performance. Putting the FreeSWITCH core.db file onto a RAM disk can increase performance.

To do so, use the documented setting in switch.conf.xml:

   <param name="core-db-name" value="/usr/local/freeswitch/ramdisk" />

Example

in /etc/fstab:

   tmpfs    /usr/local/freeswitch/ramdb     tmpfs   defaults        0 0

Then, in freeswitch/conf/autoload_configs/switch.conf.xml uncomment:

   <param name="core-db-name" value="/usr/local/freeswitch/ramdisk/core.db" />

And set it to the path you created in fstab. Make sure you also create the directory.

Restart FreeSWITCH

See Also

Performance_testing_and_configurations#FreeSWITCH.27s_core.db_I.2FO_bottleneck