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| author | Simon Riggs <simon@2ndQuadrant.com> | 2017-03-24 14:20:59 +0000 |
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| committer | Simon Riggs <simon@2ndQuadrant.com> | 2017-03-24 14:20:59 +0000 |
| commit | 42b4b0b2413b9b472aaf2112a3bbfd80a6ab4dc5 (patch) | |
| tree | 3e40c73b0fcbc2faac1d468e21001514572bd3b1 /src/backend/executor/functions.c | |
| parent | 8398c836892fde2b99139cc4711e57b7e59582b6 (diff) | |
| download | postgresql-42b4b0b2413b9b472aaf2112a3bbfd80a6ab4dc5.tar.gz postgresql-42b4b0b2413b9b472aaf2112a3bbfd80a6ab4dc5.zip | |
Avoid SnapshotResetXmin() during AtEOXact_Snapshot()
For normal commits and aborts we already reset PgXact->xmin
Avoiding touching highly contented shmem improves concurrent
performance.
Simon Riggs
Discussion: CANP8+jJdXE9b+b9F8CQT-LuxxO0PBCB-SZFfMVAdp+akqo4zfg@mail.gmail.com
Diffstat (limited to 'src/backend/executor/functions.c')
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