Re: Listen / Notify rewrite - Mailing list pgsql-hackers

From Andrew Chernow
Subject Re: Listen / Notify rewrite
Date
Msg-id 4AFC2511.7000204@esilo.com
Whole thread Raw
In response to Re: Listen / Notify rewrite  (Merlin Moncure <mmoncure@gmail.com>)
Responses Re: Listen / Notify rewrite
List pgsql-hackers
> 
> What advantage is there in limiting it to a tiny size?  This is a
> 'payload' after all...an arbitrary data block. Looking at the patch I
> noticed the payload structure (AsyncQueueEntry) is fixed length and
> designed to lay into QUEUE_PAGESIZE (set to) BLCKSZ sized pages.
> 

Hmmmm.  Looks like the limitation comes from slru.  The true payload 
limit is (8K - struct members) the way this is implemented.

-- 
Andrew Chernow
eSilo, LLC
every bit counts
http://www.esilo.com/


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