Thanks for your response.
We realized that with 200 children the problem is still happing.
We are using db ( MySQL 5 ) in every request in the config file through the
following modules:
- lcr: to check every request where come from
- dispatcher: to make load balancing with a pool of asterisk in cluster
- avpsops: to use some user preferences
- carrieroute: to balance outbound calls to several providers
Is this a high load of db transactions to the openser?
Regards
2008/9/3 Ovidiu Sas <osas(a)voipembedded.com>
Increasing the number of children to 200 will not
help.
Most likely, your config is doing something 'wrong' or being terribly
intensive on mysql db.
Openser is very light and it can handle lot's of transaction, but if
you are using a slow db and you are doing db queries during your
transaction processing, then your server will be slow.
Check your config and see what's going 'wrong' there.
As a reference, openser is able to do 150 cps using a single child and
the CPU is barely utilized (on a slow machine).
Regards,
Ovidiu Sas
On Wed, Sep 3, 2008 at 10:31 AM, Samael - <samael.zgz(a)gmail.com> wrote:
Hi,
We are deploying OpenSER in a large infrastructure together with Asterisk
to
support thousands of current transactions.
We are using udp listener and mysql module in openser.
We had to increase the children parameter of the openser.cfg to 200
because
Openser couldn't handle the high amount of
concurrent SIP REQUESTs from
ASTERISK (Not only INVITES, but also a lot of SIP OPTIONs), that means
that
Openser couldn't handle more than
'children' REQUEST loosing the rest of
the
concurrent REQUEST.
children=200
But then, the following error appeared in the openser:
ERROR:mysql:db_mysql_new_connection: driver error: Too many connections
This is because the Standard parameter of mysql "max_connections" is set
to
100.
In mysql CLI, we can see that every child process of openser has a mysql
connection. (see in Mysql> SHOW PROCESSLIST)
The recommended max_connections parameter is 500-1000 => we have a limit
of
500-1000 concurrent SIP REQUEST to be processed
by the openser.
Why there is a process for every child?
Why is neccesary a mysql connection for every child?
Can the openser have a pool of mysql connection to be used by thousands
of
children?
Regards
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