Re: Teach pg_receivewal to use lz4 compression

‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐

On Monday, July 12th, 2021 at 07:56, Michael Paquier <michael(at)paquier(dot)xyz> wrote:

> On Mon, Jul 12, 2021 at 11:10:24AM +0530, Dilip Kumar wrote:
>
> > On Thu, Jul 8, 2021 at 7:48 PM gkokolatos(at)pm(dot)me wrote:
> >
> > > We can, though I am not in favour of doing so. There is seemingly
> > >
> > > little benefit for added complexity.
> >
> > I am really not sure what complexity you are talking about, do you
> >
> > mean since with pglz we were already providing the compression level
> >
> > so let it be as it is but with the new compression method you don't
> >
> > see much benefit of providing compression level or speed?
>
> You mean s/pglz/zlib/ here perhaps? I am not sure what Georgios has
>
> in mind, but my opinion stands on the latter: there is little benefit
>
> in making lz4 faster than the default and reduce compression, as the
>
> default is already a rather low CPU user.

Thank you all for your comments. I am sitting on the same side as Micheal
on this one. The complexity is not huge, yet there will need to be code to
pass this option to the lz4 api and various test cases to verify for
correctness and integrity. The burden of maintenance of this code vs the
benefit of the option, tilt the scale towards not including the option.

Of course, I will happily provide whatever the community finds beneficial.

Cheers,
//Georgios

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>
> Michael