[TDB] Patches for file and memory usage growth issues

[simo]

On Mon, 2011-04-11 at 20:50 +1000, tridge at samba.org wrote:
> The change from 25% to 10% will have the bigger impact of the two
> changes I think. The 25% number was always fairly arbitrary, but
> changing to 10% means 2.5 times as many tdb_expand calls while a
> database grows. Have you measured any impact of this in initially
> creating a large database?

I have now measured my latest patch with the 100MiB size switch of
behavior) on the whole test.
I get shorter time to complete (16:30 min instead of 20min.)
The Database ends up smaller (~1.1g instead of ~1.3g) although the data
used is almost identical (500 bytes difference on the whole dataset
size).
The top memory used is about 100MiB less (at 3.4g peak) than previous
tests.

Simo.

-- 
Simo Sorce
Samba Team GPL Compliance Officer <simo at samba.org>
Principal Software Engineer at Red Hat, Inc. <simo at redhat.com>