Re: index prefetching
Tomas Vondra <tomas.vondra@enterprisedb.com>
Commits
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the thread's linked commits as JSON, with link sources.
API reference →
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aio: io_uring: Trigger async processing for large IOs
- a9ee66881744 19 (unreleased) landed
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read stream: Split decision about look ahead for AIO and combining
- 8ca147d582a5 19 (unreleased) landed
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read_stream: Only increase read-ahead distance when waiting for IO
- f63ca3379025 19 (unreleased) landed
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read_stream: Prevent distance from decaying too quickly
- 6e36930f9aaf 19 (unreleased) landed
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Reduce ExecSeqScan* code size using pg_assume()
- b227b0bb4e03 19 (unreleased) cited
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Fix rare bug in read_stream.c's split IO handling.
- b421223172a2 19 (unreleased) cited
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Fix multiranges to behave more like dependent types.
- 3e8235ba4f9c 17.0 cited
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Add EXPLAIN (MEMORY) to report planner memory consumption
- 5de890e3610d 17.0 cited
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Optimize nbtree backward scan boundary cases.
- c9c0589fda0e 17.0 cited
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Increment xactCompletionCount during subtransaction abort.
- 90c885cdab8b 14.0 cited
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Add nbtree Valgrind buffer lock checks.
- 4a70f829d86c 14.0 cited
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Add nbtree high key "continuescan" optimization.
- 29b64d1de7c7 12.0 cited
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Reduce pinning and buffer content locking for btree scans.
- 2ed5b87f96d4 9.5.0 cited
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Teach btree to handle ScalarArrayOpExpr quals natively.
- 9e8da0f75731 9.2.0 cited
Attachments
- index-prefetch-v5.patch (text/x-patch) patch v5
Here's a v5 of the patch, rebased to current master and fixing a couple compiler warnings reported by cfbot (%lu vs. UINT64_FORMAT in some debug messages). No other changes compared to v4. cfbot also reported a failure on windows in pg_dump [1], but it seem pretty strange: [11:42:48.708] ------------------------------------- 8< ------------------------------------- [11:42:48.708] stderr: [11:42:48.708] # Failed test 'connecting to an invalid database: matches' The patch does nothing related to pg_dump, and the test works perfectly fine for me (I don't have windows machine, but 32-bit and 64-bit linux works fine for me). regards [1] https://cirrus-ci.com/task/6398095366291456 -- Tomas Vondra EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company