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| author | John Naylor <john.naylor@postgresql.org> | 2022-08-03 09:49:04 -0700 |
|---|---|---|
| committer | John Naylor <john.naylor@postgresql.org> | 2022-08-10 10:48:29 +0700 |
| commit | b6ef167564905e8dab8af1b1dba0997ec61204ca (patch) | |
| tree | 9a2d2cc792c48588214a9e9dc8f7adfd68905667 /src/backend/access/transam/xlog.c | |
| parent | 356dd2ce5b7b0f3ea11e016f73b1f173604b8452 (diff) | |
| download | postgresql-b6ef167564905e8dab8af1b1dba0997ec61204ca.tar.gz postgresql-b6ef167564905e8dab8af1b1dba0997ec61204ca.zip | |
Introduce optimized routine for linear searches of arrays
Use SSE2 intrinsics to speed up the search, where available. Otherwise,
use a simple 'for' loop. The motivation to add this now is to speed up
XidInMVCCSnapshot(), which is the reason only unsigned 32-bit integer
arrays are optimized. Other types are left for future work, as is the
extension of this technique to non-x86 platforms.
Nathan Bossart
Reviewed by: Andres Freund, Bharath Rupireddy, Masahiko Sawada
Discussion: https://postgr.es/m/20220713170950.GA3116318%40nathanxps13
Diffstat (limited to 'src/backend/access/transam/xlog.c')
0 files changed, 0 insertions, 0 deletions