[mythtv-users] 0.25 SQL CPU Load issues after optimisation

[Another Sillyname]

On 18 July 2012 00:46, Thomas Mashos <thomas at mashos.com> wrote:
> On Tue, Jul 17, 2012 at 4:05 PM, Another Sillyname
> <anothersname at googlemail.com> wrote:
>> On 18 July 2012 00:01, Gary Buhrmaster <gary.buhrmaster at gmail.com> wrote:
>>> On Tue, Jul 17, 2012 at 10:48 PM, Another Sillyname
>>> <anothersname at googlemail.com> wrote:
>>> ....
>>>> I am running ext4 and noticed from a previous comment on this problems
>>>> that ext4 barriers could be an issue but couldn't find anything
>>>> explanatory in the mailing list archives to explain this.
>>>
>>> In my experience, ext4 barriers usually manifest themselves are disk I/O
>>> wait, and not high CPU usage (mysql is actually waiting a lot).
>>>
>>> If you are using innodb tables (which is possible if you rebuilt your system
>>> with a newer mysql server) you should review the recommendations at:
>>>    http://www.mythtv.org/wiki/Tune_MySQL
>>> Regardless of whether they help this particular issue, they will
>>> help overall performance in the long run.
>>> _______________________________________________
>>> mythtv-users mailing list
>>> mythtv-users at mythtv.org
>>> http://www.mythtv.org/mailman/listinfo/mythtv-users
>>
>> Thanks Gary but I'd already done that, I've been looking at this for 3
>> days now and as a number of people seem to have experienced this
>> problem without a clearly defined problem/solution I though it would
>> be useful to try to get some expert focus on it which means not me.
>> _______________________________________________
>> mythtv-users mailing list
>> mythtv-users at mythtv.org
>> http://www.mythtv.org/mailman/listinfo/mythtv-users
>
> Looks like Linux Mint 13 is based on Ubuntu 12.04, so you did get
> MySQL 5.5 from that which has innodb enabled. As previously suggested,
> you aren't experiencing the same issue that other people have
> commented on. If you were, those tuning parameters would have resolved
> it.
>
> Are you running the MythTV updates from the Mythbuntu repos?
>
> Thanks,
>
> Thomas Mashos
> _______________________________________________
> mythtv-users mailing list
> mythtv-users at mythtv.org
> http://www.mythtv.org/mailman/listinfo/mythtv-users

When you say updates can you be specific possibly.

I installed Myth from the Mint Repos that do use the Ubuntu repos and
am running 0.25+Fixes 20120410.1f5962a.0ubuntu1

Which I assume is coming from the standard Ubuntu repos rather then a
specific mint repo.