[Toolserver-l] transaction isolation level set to READ UNCOMMITTED

Essjay essjaywiki at gmail.com
Tue Jul 18 19:21:53 UTC 2006


Daniel Kinzler wrote:
>> I have no idea how this can happen and how a script
>> can affect the replication lag while it does nothing than
>> sleeping. 
>>     
>
> By holding a lock. I don't know if this is the case here, but it would
> be an explanation. Are you using explicit transactions?
>
>   
>> But I will not start it again - then there are just
>> no statistic updates anymore.
>>     
>
> Please tell me what queries exactly the script performs. I'm pretty sure
> this could be done more efficiently somehow - for example, by using at
> the recentchanges table instead of revisions.
>
>   
>> BTW, the lag raises very often even if this scripts
>> does'nt run ..
>>     
>
> Every time the replag rises like this, we find a script that's causing
> it. It's not always yours, sure, but it has been before.
>
>
> Don't think we just want to blame you - your efforts are appreciated.
> The toolserver is just at its limits right now (we *still* don't have
> the fast disk online - this is really annoying). We have to cope somehow.
>
> Regards
> Daniel
>
>   
Sorry to interrupt here, but I'm only getting one side of these emails 
(those from Daniel); I've checked that it's not a filtering problem on 
my end, so I'm a bit confused. Wondering if anyone else is having this 
problem?

Essjay

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