Feature Requests item #1748357, was opened at 2007-07-05 14:15
Message generated for change (Settings changed) made by mr-meltdown
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Category: SQL - general
Group: None
Status: Open
Priority: 5
Private: No
Submitted By: Niels Nes (nielsnes)
Assigned to: Sjoerd Mullender (sjoerd)
>Summary: SQL: msqldump too slow, requires server side rendering

Initial Comment:

Currently msqldump uses mapi_slice_row for each data
row its outputing. Mapi_slice_row does a malloc/copy for
each data field. This afcourse is far from optimal. 

A possible solution would be to let the sql server dump directly in a format 
which can be used for loading. Then msqldump should only pass the data directly 
from the server stream into the output stream.

This probably requires an new set output feature too sql.

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Comment By: bendeguz (bendeguz)
Date: 2007-07-08 12:29

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Perhaps the column (or column slice) at a time method would help here.
Please consider the parallel dump/load operation too (eg.: with MAL) -
multi-core processors are pretty common today.

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