From: | "Joel Jacobson" <joel(at)compiler(dot)org> |
---|---|
To: | pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Optimize numeric multiplication for one and two base-NBASE digit multiplicands. |
Date: | 2024-07-01 06:04:06 |
Message-ID: | 44d2ffca-d560-4919-b85a-4d07060946aa@app.fastmail.com |
Views: | Whole Thread | Raw Message | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-hackers |
Hello hackers,
Attached patch introduces an optimization of mul_var() in numeric.c, targeting cases where the multiplicands consist of only one or two base-NBASE digits. Such small multiplicands can fit into an int64 and thus be computed directly, resulting in a significant performance improvement, between 26% - 34% benchmarked on Intel Core i9-14900K.
This optimization is similar to commit d1b307eef2, that also targeted one and two base-NBASE digit operands, but optimized div_var().
Regards,
Joel
Attachment | Content-Type | Size |
---|---|---|
0001-optimize-numeric-mul_var-small-factors.patch | application/octet-stream | 1.8 KB |
From | Date | Subject | |
---|---|---|---|
Next Message | Michael Paquier | 2024-07-01 06:06:34 | Re: [PATCH] Fix docs to use canonical links |
Previous Message | Ashutosh Bapat | 2024-07-01 05:55:56 | Re: Reuse child_relids in try_partitionwise_join was Re: Assert failure on bms_equal(child_joinrel->relids, child_joinrelids) |