[rt-users] sessions table myisam or innodb

[Roy El-Hames]

Hi;

rt-3.6.3
apache2
mysql5.1

For better performance should the sessions table be myisam or innondb??
had a look in etc/schema.mysql and there is no engine type definition 
for sessions
currently my sessions table is myisam, every now and then rt freezes due 
to user lock on the session table. To keep it small, I have a script 
that delete expired sessions every 6 hours. however I am wondering if 
this is causing another problem with concurrent inserts due to deleted 
rows in the middle of the table  ?/ any suggestion.

Regards
Roy