[ZODB-Dev] ZODB 3.10.0a1 released

[Christian Theune]

Hi,

On 02/08/2010 03:38 PM, Jim Fulton wrote:
> I've just released 3.10.0a1:
> 
>   http://pypi.python.org/pypi/ZODB3/3.10.0a1#a1-2010-02-08
> 
> The main focus of this release is ZEO server performance.  For
> realistic benchmarks involving data stored on magnetic disk (as
> opposed to SSD or RAM), I've seen speedups of 4x or more, primarily by
> making the storage server multi- threaded.
> 
> (BTW, speaking of SSD, we did a test recently using a combination of
> SSD and magnetic disk. The database was around 1TB in size, with
> around 900GB being blob data.  We stored the non-blob data on an SSD
> and blob data on a 14-spindle ISCSI magenetic storage systems.  The
> test involved playing back database requests recorded in production.
> Mean load times with a 3.9 storage server without SSD were 73
> milliseconds.  Using SSD for the non-blob data reduced this to 20
> milliseconds. Using the new ZEO implementation without SSD reduced the
> mean load times to 16 milliseconds.  The use of both SSD and and the
> new ZEO reduced mean load times to around 4 milliseconds.)
> 
> This release also includes a change to the way that file-storage
> indexes are saved leading to make improvements in save and load times
> and a 30% reduction in index file size.

That's good news. Thanks for all the work!


-- 
Christian Theune · ct at gocept.com
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