fixed typos in email address
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Eduard Stefes
From b0b9ed50cec3a9f5e856659617883c8a1b926991 Mon Sep 17 00:00:00 2001
From: "Eddy (Eduard) Stefes"
Date: Tue, 15 Apr 2025 10:22:05 +0200
Subject: [PATCH v2] Added crc32c extension for ibm s390x based on VX
intrinsics
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config/c-compil
hing that the build system should check and take
care of, not the code that's getting compiled.
What is the preferred postgres way here?
> While playing around with that, the above doesn't compile on gcc 14,
> but 13 and 15 work -- maybe a bug report is in order?
Thy for reporting I'll look into that!
Many thanks for all other comments. I'll work on the code to
incorporate all remarks.
--
Eduard Stefes
Hi,
So I worked on the algorithm to also work on buffers between 16-64
bytes. Then I ran the performance measurement on two
dataset[^raw_data_1] [^raw_data_2]. And created two diagrams
[^attachment].
my findings so far:
- the optimized crc32cvx is faster
- the sb8 performance is heavily dependi
ailable on a S390X.
As this is the first time I am writing m4/autotools, I'd kindly ask the
reviewer for special care there :) . There may be dragons. But I have
high hopes all is OK.
Cheers and thanks to all for their work,
--
Eduard Stefes
From d522d8afa41f470a7edd728457e697f10a781858 Mo
