| From: | Merlin Moncure <mmoncure(at)gmail(dot)com> |
|---|---|
| To: | Joachim Wieland <joe(at)mcknight(dot)de> |
| Cc: | Heikki Linnakangas <hlinnakangas(at)vmware(dot)com>, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>, Amit Kapila <amit(dot)kapila(at)huawei(dot)com> |
| Subject: | Re: Optimizing pglz compressor |
| Date: | 2013-03-06 15:36:19 |
| Message-ID: | CAHyXU0ws0escPwTHejbPrjP1RhUmRqAwOBFqQBSUZTsOJz6Nzg@mail.gmail.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
On Wed, Mar 6, 2013 at 8:32 AM, Joachim Wieland <joe(at)mcknight(dot)de> wrote:
> On Tue, Mar 5, 2013 at 8:32 AM, Heikki Linnakangas
> <hlinnakangas(at)vmware(dot)com> wrote:
>> With these tweaks, I was able to make pglz-based delta encoding perform
>> roughly as well as Amit's patch.
>
> Out of curiosity, do we know how pglz compares with other algorithms, e.g. lz4 ?
This has been a subject of much recent discussion. It compares very
poorly, but installing a new compressor tends to be problematic due to
patent concerns (something which I disagree with but it's there). All
that said, Heikki's proposed changes seem to be low risk and quite
fast.
merlin
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Kevin Grittner | 2013-03-06 15:55:58 | Re: Materialized View patch broke pg_dump |
| Previous Message | Kevin Grittner | 2013-03-06 14:57:13 | Re: Materialized View patch broke pg_dump |