Re: pg_dump -Fd and compression level

On 07/25/2015 02:34 AM, Marc Mamin wrote:
>
>> Andrew Dunstan <andrew@dunslane.net> writes:
>>> Hmm. Yeah. It looks like commit a7ad5cf0cfcfab8418000d652fa4f0c6ad6c8911
>>> changed from using the default compression for libz to using the
>>> compression set in pg_dump options, which defaults to 0. This actually
>>> seems like the right thing to do, but it certainly should have been
>>> called out much more forcefully in release notes, and arguably should
>>> not have been changed in stable releases. Not sure what we do about it now.
> really 0? wouldn't that mean no compression at all?

No, that's not right either. The default should be 
Z_DEFAULT_COMPRESSION, so we shouldn't actually see a difference in the 
default case. And it is definitely compressing some. So I'm now puzzled 
by what you're seeing.

cheers

andrew