TDB historical performance (with pretty graphs)

Rusty Russell rusty at
Wed Jun 24 03:26:25 GMT 2009

On Fri, 19 Jun 2009 11:20:54 am tridge at wrote:
>  > we seem to suck recently on the "replace 5000 4byte key 4 byte date
>  > records with 8 byte dataa records"
> That is indeed a puzzle. If I'm reading it right, then we slowed down
> by 4x between git 77dab7 and 8c8820 for the 4 byte to 8 byte expand.
> I can't see anything in the code history that could explain
> that. Maybe you could re-check that one manually?

Yep, I re-measured all the later commits.  There's similar weirdness in the 
results; they're not consistent.

Manually remeasuring seems to reveal that the change which "don't merge right" 
commit caused the regression in the expand test.  Presumably caused by 
freelist growth.


More information about the samba-technical mailing list