Re: [patch] executor and slru dtrace probes - Mailing list pgsql-hackers

Dne 10.12.09 15:51, Bernd Helmle napsal(a):
> 
> 
> --On 8. Dezember 2009 11:10:44 +0100 Zdenek Kotala 
> <Zdenek.Kotala@Sun.COM> wrote:
> 
>> If you think that it is better I could split patch into two separate
>> patches and both can be reviewed separately.
> 
> I split up this patch into two separate patches: one for SLRU and one 
> for the executor probes. I've done some documentation on the SLRU part, 
> maybe you can look over it (to make sure i didn't break anything).
> 
> I left the executor probes out of the documentation for now, since it 
> seems not to be clear how they would manifest.
> 
> Out of curiosity: Why do we want to pass the SlruCtl pointer down to the 
> probes? I don't understand what those probes are going to do with those 
> pointers, can you explain?
> 

You need to determine which SLRU is used. Because SLRUs are initialized  during startup  pointer should be same in all
backends.If I think 
 
more about it. Maybe it could be goot to add probe also into 
SimpleLruInit to catch name of SLRUs.
    Zdenek