Bugs item #1651599, was opened at 2007-02-04 05:58
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Category: SQL/Core
Group: SQL CVS Head
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: relational (relational)
Assigned to: Niels Nes (nielsnes)
Summary: caching of inserts causes extreme memory consumption

Initial Comment:
I'm not sure if this is a bug, but at least it is very annoying:

Depending on the data (on more homogenous data, for example data with less null 
columns it seems to happen far more slowly), inserting rows into tables fills 
the memory quite fast. The memory consumption seems to be correlated to the 
number after "sql_cache.s" in the output lines like "function 
sql_cache.s54_1(A0:int,A1:int,A2:int,A3:int,A4:int,A5:int,A6:int):void# 0  
(s54_1:void)<-(A0:int)(A1:int)(A2:int)(A3:int)(A4:int)(A5:int)(A6:int)" printed 
when MonetDB5 has been compiled using the -DDEBUG_CALLMAL preprocessor flag, 
which leads me to the assumption that the inserted rows fill up some kind of 
row data cache.

If this is the intended behavior, it would be fine to know if there is a way to 
flush the cache (partially?) or otherwise limit or explicitly decrease the 
memory usage of a running server (maybe using mal/mil). Currently, I'm forced 
to restart the server periodically.

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