Hi,

I've got a lot of updates (~1000 w/s) on the master and on the nearest 
slave (like others) I've got a big replication lag. It seems that 
fetching lines from the cursor is not taking much time, but processing 
events is not well managed.

Here you can find an extract of the log that shows that the proposed 
size for grouping is often just 3 and not greater :

http://pastebin.com/f2a2974a

The slon parameters used are : -g 1000 -o 0

Any idea to speed up the processing ?


-- 
Cyril SCETBON