273 lines
11 KiB
Markdown
273 lines
11 KiB
Markdown
## Summary
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<!--Explain briefly what goes wrong and explain why you believe this is a bug and not the intended behavior of SQLite (if it is not a crash).-->**No review yet**
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## Minimized query
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```sql
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ATTACH DATABASE ':memory:' AS aux22;
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creATE VIRTUAL TABLE t0 USING fts3("x", "y", "z");
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DROP TABLE t0;
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DETACH DATABASE aux22;
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```
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## Actual output
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```sql
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Memory Used: 79920 (max 79920) bytes
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Number of Outstanding Allocations: 158 (max 158)
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Number of Pcache Overflow Bytes: 16928 (max 16928) bytes
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Largest Allocation: 48000 bytes
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Largest Pcache Allocation: 4360 bytes
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Lookaside Slots Used: 40 (max 80)
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Successful lookaside attempts: 138
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Lookaside failures due to size: 0
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Lookaside failures due to OOM: 0
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Pager Heap Usage: 18496 bytes
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Page cache hits: 0
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Page cache misses: 0
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Page cache writes: 0
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Page cache spills: 0
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Schema Heap Usage: 1104 bytes
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Statement Heap/Lookaside Usage: 2912 bytes
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Fullscan Steps: 0
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Sort Operations: 0
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Autoindex Inserts: 0
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Virtual Machine Steps: 7
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Reprepare operations: 0
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Number of times run: 1
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Memory used by prepared stmt: 2912
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Bytes received by read(): 6438
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Bytes sent to write(): 0
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Read() system calls: 13
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Write() system calls: 0
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Bytes read from storage: 0
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Bytes written to storage: 0
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Cancelled write bytes: 0
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Memory Used: 106952 (max 118920) bytes
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Number of Outstanding Allocations: 223 (max 262)
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Number of Pcache Overflow Bytes: 38472 (max 38472) bytes
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Largest Allocation: 48000 bytes
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Largest Pcache Allocation: 4360 bytes
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Lookaside Slots Used: 34 (max 96)
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Successful lookaside attempts: 449
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Lookaside failures due to size: 0
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Lookaside failures due to OOM: 0
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Pager Heap Usage: 35872 bytes
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Page cache hits: 14
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Page cache misses: 0
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Page cache writes: 0
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Page cache spills: 0
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Schema Heap Usage: 2928 bytes
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Statement Heap/Lookaside Usage: 2720 bytes
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Fullscan Steps: 0
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Sort Operations: 0
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Autoindex Inserts: 0
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Virtual Machine Steps: 33
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Reprepare operations: 0
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Number of times run: 1
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Memory used by prepared stmt: 2720
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Bytes received by read(): 6788
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Bytes sent to write(): 1292
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Read() system calls: 16
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Write() system calls: 1
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Bytes read from storage: 0
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Bytes written to storage: 0
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Cancelled write bytes: 0
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Memory Used: 101488 (max 333968) bytes
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Number of Outstanding Allocations: 164 (max 262)
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Number of Pcache Overflow Bytes: 38472 (max 54888) bytes
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Largest Allocation: 87200 bytes
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Largest Pcache Allocation: 4360 bytes
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Lookaside Slots Used: 46 (max 96)
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Successful lookaside attempts: 717
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Lookaside failures due to size: 4
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Lookaside failures due to OOM: 0
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Pager Heap Usage: 35872 bytes
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Page cache hits: 21
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Page cache misses: 0
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Page cache writes: 0
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Page cache spills: 0
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Schema Heap Usage: 1128 bytes
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Statement Heap/Lookaside Usage: 3680 bytes
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Fullscan Steps: 4
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Sort Operations: 0
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Autoindex Inserts: 0
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Virtual Machine Steps: 32
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Reprepare operations: 0
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Number of times run: 1
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Memory used by prepared stmt: 3680
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Bytes received by read(): 6885
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Bytes sent to write(): 2591
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Read() system calls: 18
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Write() system calls: 2
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Bytes read from storage: 0
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Bytes written to storage: 0
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Cancelled write bytes: 0
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Memory Used: 89272 (max 333968) bytes
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Number of Outstanding Allocations: 147 (max 262)
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Number of Pcache Overflow Bytes: 30008 (max 54888) bytes
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Largest Allocation: 87200 bytes
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Largest Pcache Allocation: 4360 bytes
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Lookaside Slots Used: 37 (max 96)
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Successful lookaside attempts: 723
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Lookaside failures due to size: 4
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Lookaside failures due to OOM: 0
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Pager Heap Usage: 26624 bytes
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Page cache hits: 0
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Page cache misses: 0
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Page cache writes: 0
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Page cache spills: 0
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Schema Heap Usage: 760 bytes
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Statement Heap/Lookaside Usage: 2784 bytes
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Fullscan Steps: 0
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Sort Operations: 0
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Autoindex Inserts: 0
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Virtual Machine Steps: 7
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Reprepare operations: 0
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Number of times run: 1
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Memory used by prepared stmt: 2784
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Bytes received by read(): 6982
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Bytes sent to write(): 3890
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Read() system calls: 21
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Write() system calls: 3
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Bytes read from storage: 0
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Bytes written to storage: 0
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Cancelled write bytes: 0
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```
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## Expectation
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```sql
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Memory Used: 80568 (max 80568) bytes
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Number of Outstanding Allocations: 168 (max 168)
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Number of Pcache Overflow Bytes: 16944 (max 16944) bytes
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Largest Allocation: 48000 bytes
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Largest Pcache Allocation: 4368 bytes
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Lookaside Slots Used: 56 (max 91)
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Successful lookaside attempts: 144
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Lookaside failures due to size: 0
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Lookaside failures due to OOM: 0
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Pager Heap Usage: 18512 bytes
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Page cache hits: 0
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Page cache misses: 0
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Page cache writes: 0
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Page cache spills: 0
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Temporary data spilled to disk: 0
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Schema Heap Usage: 944 bytes
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Statement Heap/Lookaside Usage: 2912 bytes
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Fullscan Steps: 0
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Sort Operations: 0
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Autoindex Inserts: 0
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Virtual Machine Steps: 8
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Reprepare operations: 0
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Number of times run: 1
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Memory used by prepared stmt: 2912
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Bytes received by read(): 7214
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Bytes sent to write(): 0
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Read() system calls: 14
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Write() system calls: 0
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Bytes read from storage: 0
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Bytes written to storage: 0
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Cancelled write bytes: 0
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Memory Used: 107400 (max 118928) bytes
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Number of Outstanding Allocations: 234 (max 263)
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Number of Pcache Overflow Bytes: 38512 (max 38512) bytes
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Largest Allocation: 48000 bytes
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Largest Pcache Allocation: 4368 bytes
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Lookaside Slots Used: 50 (max 105)
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Successful lookaside attempts: 427
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Lookaside failures due to size: 0
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Lookaside failures due to OOM: 0
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Pager Heap Usage: 35920 bytes
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Page cache hits: 14
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Page cache misses: 0
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Page cache writes: 0
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Page cache spills: 0
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Temporary data spilled to disk: 0
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Schema Heap Usage: 2704 bytes
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Statement Heap/Lookaside Usage: 2616 bytes
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Fullscan Steps: 0
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Sort Operations: 0
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Autoindex Inserts: 0
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Virtual Machine Steps: 33
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Reprepare operations: 0
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Number of times run: 1
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Memory used by prepared stmt: 2616
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Bytes received by read(): 7308
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Bytes sent to write(): 1330
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Read() system calls: 16
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Write() system calls: 1
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Bytes read from storage: 0
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Bytes written to storage: 0
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Cancelled write bytes: 0
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Memory Used: 102384 (max 334544) bytes
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Number of Outstanding Allocations: 175 (max 265)
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Number of Pcache Overflow Bytes: 38512 (max 54912) bytes
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Largest Allocation: 87360 bytes
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Largest Pcache Allocation: 4368 bytes
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Lookaside Slots Used: 60 (max 105)
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Successful lookaside attempts: 667
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Lookaside failures due to size: 4
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Lookaside failures due to OOM: 0
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Pager Heap Usage: 35920 bytes
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Page cache hits: 21
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Page cache misses: 0
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Page cache writes: 0
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Page cache spills: 0
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Temporary data spilled to disk: 0
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Schema Heap Usage: 1192 bytes
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Statement Heap/Lookaside Usage: 3424 bytes
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Fullscan Steps: 4
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Sort Operations: 0
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Autoindex Inserts: 0
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Virtual Machine Steps: 32
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Reprepare operations: 0
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Number of times run: 1
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Memory used by prepared stmt: 3424
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Bytes received by read(): 7405
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Bytes sent to write(): 2669
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Read() system calls: 18
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Write() system calls: 2
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Bytes read from storage: 0
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Bytes written to storage: 0
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Cancelled write bytes: 0
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Memory Used: 90232 (max 334544) bytes
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Number of Outstanding Allocations: 158 (max 265)
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Number of Pcache Overflow Bytes: 30040 (max 54912) bytes
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Largest Allocation: 87360 bytes
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Largest Pcache Allocation: 4368 bytes
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Lookaside Slots Used: 53 (max 105)
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Successful lookaside attempts: 673
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Lookaside failures due to size: 4
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Lookaside failures due to OOM: 0
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Pager Heap Usage: 26664 bytes
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Page cache hits: 0
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Page cache misses: 0
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Page cache writes: 0
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Page cache spills: 0
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Temporary data spilled to disk: 0
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Schema Heap Usage: 880 bytes
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Statement Heap/Lookaside Usage: 2784 bytes
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Fullscan Steps: 0
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Sort Operations: 0
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Autoindex Inserts: 0
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Virtual Machine Steps: 8
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Reprepare operations: 0
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Number of times run: 1
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Memory used by prepared stmt: 2784
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Bytes received by read(): 7502
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Bytes sent to write(): 4008
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Read() system calls: 21
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Write() system calls: 3
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Bytes read from storage: 0
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Bytes written to storage: 0
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Cancelled write bytes: 0
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```
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## Flag
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```
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-stats
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```
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