[Freeswitch-users] High load on database server

Fri Oct 28 12:37:16 MSD 2011

My god!

Multi statements and transactions are two completely different thinks! You
should read up on the topic.

Hynek

On Thu, Oct 27, 2011 at 9:08 PM, Anthony Minessale <
anthony.minessale at gmail.com> wrote:

> Blah,
>
> I said I don't like mysql, but ok I'll look it up for you.......
>
> http://www.mail-archive.com/profox@leafe.com/msg33150.html
>
> AND
>
>
> http://dev.mysql.com/doc/refman/5.0/en/connector-odbc-configuration-connection-parameters.html
> search for 'FLAG_MULTI_STATEMENTS'
>
> From our own FS resources:
>
> http://wiki.freeswitch.org/wiki/Using_ODBC_in_the_core#CentOS_5.2
>
> http://www.mail-archive.com/freeswitch-users@lists.freeswitch.org/msg19883.html
>
> or
>
> http://tinyurl.com/4xo26sv
>
>
>
>
>
>
> On Thu, Oct 27, 2011 at 1:29 PM, Hynek Cihlar <hynek.cihlar at gmail.com>wrote:
>
>> Transactions are by default supported by mysql, the transactions are
>> driven by sql statements themselves.
>>
>> Your statement is either incorrect or I interpret it wrong.
>>
>>
>> Sent from my mobile device
>>
>> On Oct 27, 2011, at 20:09, Anthony Minessale <anthony.minessale at gmail.com>
>> wrote:
>>
>> mysql does not work with transactions by default in defense of injection
>> attacks... read the thread its in the top.
>>
>>
>> On Thu, Oct 27, 2011 at 1:07 PM, Madovsky < <infos at madovsky.org>
>> infos at madovsky.org> wrote:
>>
>>> **
>>> Thanks Ken. here the link of official SIPP website
>>>  <http://sipp.sourceforge.net/>http://sipp.sourceforge.net/
>>>
>>> I didn't know it was a HP app ! :0)
>>>
>>> ----- Original Message -----
>>> *From:* Ken Rice <krice at freeswitch.org>
>>> *To:* FreeSWITCH Users Help <freeswitch-users at lists.freeswitch.org>
>>> *Sent:* Thursday, October 27, 2011 1:54 PM
>>> *Subject:* Re: [Freeswitch-users] High load on database server
>>>
>>> SIPP works fine for this... However keep in mind some of their default
>>> scenario files arent exactly the best in the world and can in many
>>> situations leave a bit to be desired... Check the wiki I think there is more
>>> info on this on there
>>>
>>> K
>>>
>>>
>>> On 10/27/11 12:51 PM, "Madovsky" < <infos at madovsky.org>
>>> infos at madovsky.org> wrote:
>>>
>>> on this subject,
>>> is SIPp can be used to test to reproduce hundreds calls ?
>>>
>>>
>>> ----- Original Message -----
>>>
>>> *From:*  Anthony Minessale < <anthony.minessale at gmail.com>
>>> mailto:anthony.minessale at gmail.com <anthony.minessale at gmail.com>>
>>>
>>> *To:* FreeSWITCH Users Help < <freeswitch-users at lists.freeswitch.org>
>>> mailto:freeswitch-users at lists.freeswitch.org<freeswitch-users at lists.freeswitch.org>>
>>>
>>>
>>> *Sent:* Thursday, October 27, 2011 1:39  PM
>>>
>>> *Subject:* Re: [Freeswitch-users] High load  on database server
>>>
>>>
>>> BTW I know it's a contradiction to tell you to consider older  ODBC and
>>> newer FS but I wrote FS so I can attest to its stability especially  the
>>> ODBC code in the core.
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> On Thu, Oct 27, 2011 at 12:36 PM, Anthony Minessale  <<http://anthony.minessale@gmail.com>
>>> anthony.minessale at gmail.com>  wrote:
>>>
>>>
>>>
>>> Let's recap
>>>
>>>
>>>
>>> You have 4 moving parts, you have various versions of all 4 to choose
>>>  from and even different implementations of 3 of the 4.
>>>
>>>
>>> ODBC LIB
>>> ODBC DRIVER
>>>
>>> DATABASE
>>>
>>> FS
>>>
>>>
>>>
>>> You must choose a stable combination of all 4 which may require  specific
>>> configuration of each component as well.
>>>
>>>
>>>
>>> My only issue is FUD, I do not want people to advertise that FS does  not
>>> work on ODBC under load when the whole story is FS does not work under  load
>>> when you use fooODBC with barDRIVER with basBASE database server  configured
>>> a particular way.
>>>
>>>
>>>
>>> It should never crash, if it does, its a bug in something.  I can  speak
>>> for FS that there is no bug there.  The other 3 are  variables.
>>>
>>> Remember this next time there is a discussion about using system libs
>>>  and why we build our own depends.  The one thing we use system libs  for,
>>> ODBC, is a huge PITA.........
>>>
>>>
>>>
>>> Things to remember:
>>>
>>>
>>>
>>> 1) try the Threading=0 in the odbcinst.ini, this is a serious problem
>>>  and has been made the default in latest versions.
>>>
>>> 2) If you must use Mysql, enable transactions and make sure your
>>>  odbc.ini is referencing the threadsafe version of the lib
>>>
>>>      libmyodbc3_r.so <-- note _r
>>>
>>> 3) Try various combos of drivers and odbc libs, many time newer is not
>>>  better, stable versions lie in the past.
>>>
>>> 4) build the drivers and odbc yourself or get the debug symbols so you
>>>  can get a backtrace, you could be finding a bug for them.......
>>>
>>> 5) Find a test to reproduce your problem so you can try different
>>>  database engines and driver combos.
>>>
>>> 6) Make sure you are on latest FS git so you know you have a stable
>>>  copy.
>>>
>>>
>>>
>>>
>>>
>>> Anyway, this is a pain, that's why ppl pay you to do it.
>>>
>>> Discuss this all you want here, just minimize any FUD to scare away
>>>  people who want to use it.
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> On Thu, Oct 27, 2011 at 12:24 PM, Hynek Cihlar <<http://hynek.cihlar@gmail.com>
>>> hynek.cihlar at gmail.com> wrote:
>>>
>>>
>>> Do not agree. Issues happening under extreme cases like  high load with
>>> some specific conditions are hard to reproduce, sharing  the
>>> information in this case is a lot more efficient, for all.
>>>
>>>
>>> Sent from my mobile device
>>>
>>>
>>>
>>>
>>> On Oct 27, 2011, at 18:56, Robert Huddleston <<http://rhuddleston@gmail.com>
>>> rhuddleston at gmail.com> wrote:
>>>
>>> > My bologna  has a first name - it's O S C A R...
>>> >
>>> > This topic is getting  really old... I have to agree with Antm - get
>>> out of
>>> > the lazy  pants and do some research / hard work.
>>> >
>>> >
>>> >  -----Original Message-----
>>> > From: <http://freeswitch-users-bounces@lists.freeswitch.org>
>>> freeswitch-users-bounces at lists.freeswitch.org
>>> >  [ <freeswitch-users-bounces at lists.freeswitch.org>
>>> mailto:freeswitch-users-bounces at lists.freeswitch.org<freeswitch-users-bounces at lists.freeswitch.org>]
>>> On Behalf  Of Sergey
>>> > Okhapkin
>>> > Sent: Thursday, October 27, 2011 12:43  PM
>>> > To: FreeSWITCH Users Help
>>> > Subject: Re:  [Freeswitch-users] High load on database server
>>> >
>>> > What do  you mean "shared ODBC"?
>>> >
>>> > On Thursday 27 October 2011,  Madovsky wrote:
>>> >> but, is anyone experienced that with shared  ODBC ? (managing more
>>> than 330
>>> >> concurrent  calls)
>>> >>
>>> >> ----- Original Message -----
>>> >>  From: "Madovsky" < <http://infos@madovsky.org>infos at madovsky.org>
>>> >> To: "FreeSWITCH Users  Help" <<http://freeswitch-users@lists.freeswitch.org>
>>> freeswitch-users at lists.freeswitch.org>
>>> >>  Sent: Thursday, October 27, 2011 12:33 PM
>>> >> Subject: Re:  [Freeswitch-users] High load on database  server
>>> >>
>>> >>> ha ok, good luck  so
>>> >>>
>>> >>> ----- Original Message  -----
>>> >>> From: "Cliff Wells" < <http://cliff@develix.com>cliff at develix.com>
>>> >>> To: "FreeSWITCH  Users Help" <<http://freeswitch-users@lists.freeswitch.org>
>>> freeswitch-users at lists.freeswitch.org>
>>> >>>  Sent: Thursday, October 27, 2011 12:26 PM
>>> >>> Subject: Re:  [Freeswitch-users] High load on database  server
>>> >>>
>>> >>>> On Thu, 2011-10-27 at 11:55  -0400, Madovsky wrote:
>>> >>>>> I means that depend the  quality of your script ;)
>>> >>>>
>>> >>>> Quality  isn't the issue here.  The script is too simple to be
>>>  incorrect
>>> >>>> (and it carefully releases the odbc  connection back to the pool in
>>> a
>>> >>>> hangup handler).   I have written poor-quality code plenty of times,
>>>  but
>>> >>>> 25 years as a programmer usually allows me the  luxury of knowing
>>> when
>>> >>>> I'm doing it,  thanks.
>>> >>>>
>>> >>>> In any case, Lua scripts  work fine.  Google will tell you that
>>> unixODBC
>>> >>>>  before 2.3.0 was a bit of a mess, so I expect the issue lies there,
>>>  but
>>> >>>> again, I emphasize, everything WORKS GREAT (been  using it for a
>>> couple
>>> >>>> of years now) until you get to  very high concurrency (about 330
>>> >>>> concurrent calls on a  single system).  If you don't expect to
>>> handle
>>> >>>>  more than 300 concurrent calls, then you do not need to worry about
>>>  it.
>>> >>>> At all.
>>> >>>>
>>> >>>>  Regards,
>>> >>>>  Cliff
>>> >>>>
>>> >>>>
>>> >>>>
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>>> FreeSWITCH-users at lists.freeswitch.org
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>>
>>
>> --
>> Anthony Minessale II
>>
>> FreeSWITCH <http://www.freeswitch.org/>http://www.freeswitch.org/
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>
>
> --
> Anthony Minessale II
>
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>
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