/** Disk-Space Utilization Report For opsqueue.db
Page size in bytes................................ 4096
Pages in the whole file (measured)................ 5281
Pages in the whole file (calculated).............. 5281
Pages that store data............................. 5281 100.0%
Pages on the freelist (per header)................ 0 0.0%
Pages on the freelist (calculated)................ 0 0.0%
Pages of auto-vacuum overhead..................... 0 0.0%
Number of tables in the database.................. 8
Number of indices................................. 8
Number of defined indices......................... 1
Number of implied indices......................... 7
Size of the file in bytes......................... 21630976
Bytes of user payload stored...................... 4701750 21.7%
*** Page counts for all tables with their indices *****************************
CHUNKS............................................ 5268 99.75%
_SQLX_MIGRATIONS.................................. 2 0.038%
CHUNKS_COMPLETED.................................. 2 0.038%
CHUNKS_FAILED..................................... 2 0.038%
SUBMISSIONS....................................... 2 0.038%
SUBMISSIONS_COMPLETED............................. 2 0.038%
SUBMISSIONS_FAILED................................ 2 0.038%
SQLITE_SCHEMA..................................... 1 0.019%
*** Page counts for all tables and indices separately *************************
RANDOM_CHUNKS_ORDER............................... 1941 36.8%
SQLITE_AUTOINDEX_CHUNKS_1......................... 1729 32.7%
CHUNKS............................................ 1598 30.3%
_SQLX_MIGRATIONS.................................. 1 0.019%
CHUNKS_COMPLETED.................................. 1 0.019%
CHUNKS_FAILED..................................... 1 0.019%
SQLITE_AUTOINDEX__SQLX_MIGRATIONS_1............... 1 0.019%
SQLITE_AUTOINDEX_CHUNKS_COMPLETED_1............... 1 0.019%
SQLITE_AUTOINDEX_CHUNKS_FAILED_1.................. 1 0.019%
SQLITE_AUTOINDEX_SUBMISSIONS_1.................... 1 0.019%
SQLITE_AUTOINDEX_SUBMISSIONS_COMPLETED_1.......... 1 0.019%
SQLITE_AUTOINDEX_SUBMISSIONS_FAILED_1............. 1 0.019%
SQLITE_SCHEMA..................................... 1 0.019%
SUBMISSIONS....................................... 1 0.019%
SUBMISSIONS_COMPLETED............................. 1 0.019%
SUBMISSIONS_FAILED................................ 1 0.019%
*** All tables and indices ****************************************************
Percentage of total database...................... 100.0%
Number of entries................................. 900027
Bytes of storage consumed......................... 21630976
Bytes of payload.................................. 16291103 75.3%
Bytes of metadata................................. 3654888 16.9%
Average payload per entry......................... 18.10
Average unused bytes per entry.................... 1.87
Average metadata per entry........................ 4.06
Average fanout.................................... 159.00
Maximum payload per entry......................... 496
Entries that use overflow......................... 0 0.0%
Index pages used.................................. 33
Primary pages used................................ 5248
Overflow pages used............................... 0
Total pages used.................................. 5281
Unused bytes on index pages....................... 24340 18.0%
Unused bytes on primary pages..................... 1660645 7.7%
Unused bytes on overflow pages.................... 0
Unused bytes on all pages......................... 1684985 7.8%
*** All tables ****************************************************************
Percentage of total database...................... 30.4%
Number of entries................................. 300021
Bytes of storage consumed......................... 6574080
Bytes of payload.................................. 4704826 71.6%
Bytes of metadata................................. 1810790 27.5%
Average payload per entry......................... 15.68
Average unused bytes per entry.................... 0.19
Average metadata per entry........................ 6.04
Average fanout.................................... 319.00
Maximum payload per entry......................... 496
Entries that use overflow......................... 0 0.0%
Index pages used.................................. 5
Primary pages used................................ 1600
Overflow pages used............................... 0
Total pages used.................................. 1605
Unused bytes on index pages....................... 6172 30.1%
Unused bytes on primary pages..................... 52292 0.80%
Unused bytes on overflow pages.................... 0
Unused bytes on all pages......................... 58464 0.89%
*** All indices ***************************************************************
Percentage of total database...................... 69.6%
Number of entries................................. 600006
Bytes of storage consumed......................... 15056896
Bytes of payload.................................. 11586277 76.9%
Bytes of metadata................................. 1844098 12.2%
Average payload per entry......................... 19.31
Average unused bytes per entry.................... 2.71
Average metadata per entry........................ 3.07
Average fanout.................................... 131.00
Maximum payload per entry......................... 22
Entries that use overflow......................... 0 0.0%
Index pages used.................................. 28
Primary pages used................................ 3648
Overflow pages used............................... 0
Total pages used.................................. 3676
Unused bytes on index pages....................... 18168 15.8%
Unused bytes on primary pages..................... 1608353 10.8%
Unused bytes on overflow pages.................... 0
Unused bytes on all pages......................... 1626521 10.8%
*** Table _SQLX_MIGRATIONS and all its indices ********************************
Percentage of total database...................... 0.038%
Number of entries................................. 6
Bytes of storage consumed......................... 8192
Bytes of payload.................................. 314 3.8%
Bytes of metadata................................. 37 0.45%
Average payload per entry......................... 52.33
Average unused bytes per entry.................... 1306.83
Average metadata per entry........................ 6.17
Maximum payload per entry......................... 102
Entries that use overflow......................... 0 0.0%
Primary pages used................................ 2
Overflow pages used............................... 0
Total pages used.................................. 2
Unused bytes on primary pages..................... 7841 95.7%
Unused bytes on overflow pages.................... 0
Unused bytes on all pages......................... 7841 95.7%
*** Table _SQLX_MIGRATIONS w/o any indices ************************************
Percentage of total database...................... 0.019%
Number of entries................................. 3
Bytes of storage consumed......................... 4096
Bytes of payload.................................. 285 7.0%
Bytes of metadata................................. 20 0.49%
B-tree depth...................................... 1
Average payload per entry......................... 95.00
Average unused bytes per entry.................... 1263.67
Average metadata per entry........................ 6.67
Maximum payload per entry......................... 102
Entries that use overflow......................... 0 0.0%
Primary pages used................................ 1
Overflow pages used............................... 0
Total pages used.................................. 1
Unused bytes on primary pages..................... 3791 92.6%
Unused bytes on overflow pages.................... 0
Unused bytes on all pages......................... 3791 92.6%
*** Index SQLITE_AUTOINDEX__SQLX_MIGRATIONS_1 of table _SQLX_MIGRATIONS *******
Percentage of total database...................... 0.019%
Number of entries................................. 3
Bytes of storage consumed......................... 4096
Bytes of payload.................................. 29 0.71%
Bytes of metadata................................. 17 0.42%
B-tree depth...................................... 1
Average payload per entry......................... 9.67
Average unused bytes per entry.................... 1350.00
Average metadata per entry........................ 5.67
Maximum payload per entry......................... 10
Entries that use overflow......................... 0 0.0%
Primary pages used................................ 1
Overflow pages used............................... 0
Total pages used.................................. 1
Unused bytes on primary pages..................... 4050 98.9%
Unused bytes on overflow pages.................... 0
Unused bytes on all pages......................... 4050 98.9%
*** Table CHUNKS and all its indices ******************************************
Percentage of total database...................... 99.75%
Number of entries................................. 900000
Bytes of storage consumed......................... 21577728
Bytes of payload.................................. 16287519 75.5%
Bytes of metadata................................. 3654574 16.9%
Average payload per entry......................... 18.10
Average unused bytes per entry.................... 1.82
Average metadata per entry........................ 4.06
Average fanout.................................... 159.00
Maximum payload per entry......................... 22
Entries that use overflow......................... 0 0.0%
Index pages used.................................. 33
Primary pages used................................ 5235
Overflow pages used............................... 0
Total pages used.................................. 5268
Unused bytes on index pages....................... 24340 18.0%
Unused bytes on primary pages..................... 1611295 7.5%
Unused bytes on overflow pages.................... 0
Unused bytes on all pages......................... 1635635 7.6%
*** Table CHUNKS w/o any indices **********************************************
Percentage of total database...................... 30.3%
Number of entries................................. 300000
Bytes of storage consumed......................... 6545408
Bytes of payload.................................. 4701306 71.8%
Bytes of metadata................................. 1810542 27.7%
B-tree depth...................................... 3
Average payload per entry......................... 15.67
Average unused bytes per entry.................... 0.11
Average metadata per entry........................ 6.04
Average fanout.................................... 319.00
Non-sequential pages.............................. 1592 99.69%
Maximum payload per entry......................... 16
Entries that use overflow......................... 0 0.0%
Index pages used.................................. 5
Primary pages used................................ 1593
Overflow pages used............................... 0
Total pages used.................................. 1598
Unused bytes on index pages....................... 6172 30.1%
Unused bytes on primary pages..................... 27388 0.42%
Unused bytes on overflow pages.................... 0
Unused bytes on all pages......................... 33560 0.51%
*** Indices of table CHUNKS ***************************************************
Percentage of total database...................... 69.5%
Number of entries................................. 600000
Bytes of storage consumed......................... 15032320
Bytes of payload.................................. 11586213 77.1%
Bytes of metadata................................. 1844032 12.3%
Average payload per entry......................... 19.31
Average unused bytes per entry.................... 2.67
Average metadata per entry........................ 3.07
Average fanout.................................... 131.00
Maximum payload per entry......................... 22
Entries that use overflow......................... 0 0.0%
Index pages used.................................. 28
Primary pages used................................ 3642
Overflow pages used............................... 0
Total pages used.................................. 3670
Unused bytes on index pages....................... 18168 15.8%
Unused bytes on primary pages..................... 1583907 10.6%
Unused bytes on overflow pages.................... 0
Unused bytes on all pages......................... 1602075 10.7%
*** Index RANDOM_CHUNKS_ORDER of table CHUNKS *********************************
Percentage of total database...................... 36.8%
Number of entries................................. 300000
Bytes of storage consumed......................... 7950336
Bytes of payload.................................. 6317802 79.5%
Bytes of metadata................................. 923288 11.6%
B-tree depth...................................... 3
Average payload per entry......................... 21.06
Average unused bytes per entry.................... 2.36
Average metadata per entry........................ 3.08
Average fanout.................................... 129.00
Non-sequential pages.............................. 1339 69.0%
Maximum payload per entry......................... 22
Entries that use overflow......................... 0 0.0%
Index pages used.................................. 15
Primary pages used................................ 1926
Overflow pages used............................... 0
Total pages used.................................. 1941
Unused bytes on index pages....................... 7241 11.8%
Unused bytes on primary pages..................... 702005 8.9%
Unused bytes on overflow pages.................... 0
Unused bytes on all pages......................... 709246 8.9%
*** Index SQLITE_AUTOINDEX_CHUNKS_1 of table CHUNKS ***************************
Percentage of total database...................... 32.7%
Number of entries................................. 300000
Bytes of storage consumed......................... 7081984
Bytes of payload.................................. 5268411 74.4%
Bytes of metadata................................. 920744 13.0%
B-tree depth...................................... 3
Average payload per entry......................... 17.56
Average unused bytes per entry.................... 2.98
Average metadata per entry........................ 3.07
Average fanout.................................... 133.00
Non-sequential pages.............................. 1669 96.6%
Maximum payload per entry......................... 18
Entries that use overflow......................... 0 0.0%
Index pages used.................................. 13
Primary pages used................................ 1716
Overflow pages used............................... 0
Total pages used.................................. 1729
Unused bytes on index pages....................... 10927 20.5%
Unused bytes on primary pages..................... 881902 12.5%
Unused bytes on overflow pages.................... 0
Unused bytes on all pages......................... 892829 12.6%
*** Table CHUNKS_COMPLETED and all its indices ********************************
Percentage of total database...................... 0.038%
Number of entries................................. 0
Bytes of storage consumed......................... 8192
Bytes of payload.................................. 0 0.0%
Bytes of metadata................................. 16 0.20%
Average payload per entry......................... 0.0
Average unused bytes per entry.................... 0.0
Average metadata per entry........................ 0.0
Maximum payload per entry......................... 0
Entries that use overflow......................... 0
Primary pages used................................ 2
Overflow pages used............................... 0
Total pages used.................................. 2
Unused bytes on primary pages..................... 8176 99.80%
Unused bytes on overflow pages.................... 0
Unused bytes on all pages......................... 8176 99.80%
*** Table CHUNKS_COMPLETED w/o any indices ************************************
Percentage of total database...................... 0.019%
Number of entries................................. 0
Bytes of storage consumed......................... 4096
Bytes of payload.................................. 0 0.0%
Bytes of metadata................................. 8 0.20%
B-tree depth...................................... 1
Average payload per entry......................... 0.0
Average unused bytes per entry.................... 0.0
Average metadata per entry........................ 0.0
Maximum payload per entry......................... 0
Entries that use overflow......................... 0
Primary pages used................................ 1
Overflow pages used............................... 0
Total pages used.................................. 1
Unused bytes on primary pages..................... 4088 99.80%
Unused bytes on overflow pages.................... 0
Unused bytes on all pages......................... 4088 99.80%
*** Index SQLITE_AUTOINDEX_CHUNKS_COMPLETED_1 of table CHUNKS_COMPLETED *******
Percentage of total database...................... 0.019%
Number of entries................................. 0
Bytes of storage consumed......................... 4096
Bytes of payload.................................. 0 0.0%
Bytes of metadata................................. 8 0.20%
B-tree depth...................................... 1
Average payload per entry......................... 0.0
Average unused bytes per entry.................... 0.0
Average metadata per entry........................ 0.0
Maximum payload per entry......................... 0
Entries that use overflow......................... 0
Primary pages used................................ 1
Overflow pages used............................... 0
Total pages used.................................. 1
Unused bytes on primary pages..................... 4088 99.80%
Unused bytes on overflow pages.................... 0
Unused bytes on all pages......................... 4088 99.80%
*** Table CHUNKS_FAILED and all its indices ***********************************
Percentage of total database...................... 0.038%
Number of entries................................. 0
Bytes of storage consumed......................... 8192
Bytes of payload.................................. 0 0.0%
Bytes of metadata................................. 16 0.20%
Average payload per entry......................... 0.0
Average unused bytes per entry.................... 0.0
Average metadata per entry........................ 0.0
Maximum payload per entry......................... 0
Entries that use overflow......................... 0
Primary pages used................................ 2
Overflow pages used............................... 0
Total pages used.................................. 2
Unused bytes on primary pages..................... 8176 99.80%
Unused bytes on overflow pages.................... 0
Unused bytes on all pages......................... 8176 99.80%
*** Table CHUNKS_FAILED w/o any indices ***************************************
Percentage of total database...................... 0.019%
Number of entries................................. 0
Bytes of storage consumed......................... 4096
Bytes of payload.................................. 0 0.0%
Bytes of metadata................................. 8 0.20%
B-tree depth...................................... 1
Average payload per entry......................... 0.0
Average unused bytes per entry.................... 0.0
Average metadata per entry........................ 0.0
Maximum payload per entry......................... 0
Entries that use overflow......................... 0
Primary pages used................................ 1
Overflow pages used............................... 0
Total pages used.................................. 1
Unused bytes on primary pages..................... 4088 99.80%
Unused bytes on overflow pages.................... 0
Unused bytes on all pages......................... 4088 99.80%
*** Index SQLITE_AUTOINDEX_CHUNKS_FAILED_1 of table CHUNKS_FAILED *************
Percentage of total database...................... 0.019%
Number of entries................................. 0
Bytes of storage consumed......................... 4096
Bytes of payload.................................. 0 0.0%
Bytes of metadata................................. 8 0.20%
B-tree depth...................................... 1
Average payload per entry......................... 0.0
Average unused bytes per entry.................... 0.0
Average metadata per entry........................ 0.0
Maximum payload per entry......................... 0
Entries that use overflow......................... 0
Primary pages used................................ 1
Overflow pages used............................... 0
Total pages used.................................. 1
Unused bytes on primary pages..................... 4088 99.80%
Unused bytes on overflow pages.................... 0
Unused bytes on all pages......................... 4088 99.80%
*** Table SQLITE_SCHEMA *******************************************************
Percentage of total database...................... 0.019%
Number of entries................................. 15
Bytes of storage consumed......................... 4096
Bytes of payload.................................. 3076 75.1%
Bytes of metadata................................. 176 4.3%
B-tree depth...................................... 1
Average payload per entry......................... 205.07
Average unused bytes per entry.................... 56.27
Average metadata per entry........................ 11.73
Maximum payload per entry......................... 496
Entries that use overflow......................... 0 0.0%
Primary pages used................................ 1
Overflow pages used............................... 0
Total pages used.................................. 1
Unused bytes on primary pages..................... 844 20.6%
Unused bytes on overflow pages.................... 0
Unused bytes on all pages......................... 844 20.6%
*** Table SUBMISSIONS and all its indices *************************************
Percentage of total database...................... 0.038%
Number of entries................................. 6
Bytes of storage consumed......................... 8192
Bytes of payload.................................. 194 2.4%
Bytes of metadata................................. 37 0.45%
Average payload per entry......................... 32.33
Average unused bytes per entry.................... 1326.83
Average metadata per entry........................ 6.17
Maximum payload per entry......................... 53
Entries that use overflow......................... 0 0.0%
Primary pages used................................ 2
Overflow pages used............................... 0
Total pages used.................................. 2
Unused bytes on primary pages..................... 7961 97.2%
Unused bytes on overflow pages.................... 0
Unused bytes on all pages......................... 7961 97.2%
*** Table SUBMISSIONS w/o any indices *****************************************
Percentage of total database...................... 0.019%
Number of entries................................. 3
Bytes of storage consumed......................... 4096
Bytes of payload.................................. 159 3.9%
Bytes of metadata................................. 20 0.49%
B-tree depth...................................... 1
Average payload per entry......................... 53.00
Average unused bytes per entry.................... 1305.67
Average metadata per entry........................ 6.67
Maximum payload per entry......................... 53
Entries that use overflow......................... 0 0.0%
Primary pages used................................ 1
Overflow pages used............................... 0
Total pages used.................................. 1
Unused bytes on primary pages..................... 3917 95.6%
Unused bytes on overflow pages.................... 0
Unused bytes on all pages......................... 3917 95.6%
*** Index SQLITE_AUTOINDEX_SUBMISSIONS_1 of table SUBMISSIONS *****************
Percentage of total database...................... 0.019%
Number of entries................................. 3
Bytes of storage consumed......................... 4096
Bytes of payload.................................. 35 0.85%
Bytes of metadata................................. 17 0.42%
B-tree depth...................................... 1
Average payload per entry......................... 11.67
Average unused bytes per entry.................... 1348.00
Average metadata per entry........................ 5.67
Maximum payload per entry......................... 12
Entries that use overflow......................... 0 0.0%
Primary pages used................................ 1
Overflow pages used............................... 0
Total pages used.................................. 1
Unused bytes on primary pages..................... 4044 98.7%
Unused bytes on overflow pages.................... 0
Unused bytes on all pages......................... 4044 98.7%
*** Table SUBMISSIONS_COMPLETED and all its indices ***************************
Percentage of total database...................... 0.038%
Number of entries................................. 0
Bytes of storage consumed......................... 8192
Bytes of payload.................................. 0 0.0%
Bytes of metadata................................. 16 0.20%
Average payload per entry......................... 0.0
Average unused bytes per entry.................... 0.0
Average metadata per entry........................ 0.0
Maximum payload per entry......................... 0
Entries that use overflow......................... 0
Primary pages used................................ 2
Overflow pages used............................... 0
Total pages used.................................. 2
Unused bytes on primary pages..................... 8176 99.80%
Unused bytes on overflow pages.................... 0
Unused bytes on all pages......................... 8176 99.80%
*** Table SUBMISSIONS_COMPLETED w/o any indices *******************************
Percentage of total database...................... 0.019%
Number of entries................................. 0
Bytes of storage consumed......................... 4096
Bytes of payload.................................. 0 0.0%
Bytes of metadata................................. 8 0.20%
B-tree depth...................................... 1
Average payload per entry......................... 0.0
Average unused bytes per entry.................... 0.0
Average metadata per entry........................ 0.0
Maximum payload per entry......................... 0
Entries that use overflow......................... 0
Primary pages used................................ 1
Overflow pages used............................... 0
Total pages used.................................. 1
Unused bytes on primary pages..................... 4088 99.80%
Unused bytes on overflow pages.................... 0
Unused bytes on all pages......................... 4088 99.80%
*** Index SQLITE_AUTOINDEX_SUBMISSIONS_COMPLETED_1 of table SUBMISSIONS_COMPLETED
Percentage of total database...................... 0.019%
Number of entries................................. 0
Bytes of storage consumed......................... 4096
Bytes of payload.................................. 0 0.0%
Bytes of metadata................................. 8 0.20%
B-tree depth...................................... 1
Average payload per entry......................... 0.0
Average unused bytes per entry.................... 0.0
Average metadata per entry........................ 0.0
Maximum payload per entry......................... 0
Entries that use overflow......................... 0
Primary pages used................................ 1
Overflow pages used............................... 0
Total pages used.................................. 1
Unused bytes on primary pages..................... 4088 99.80%
Unused bytes on overflow pages.................... 0
Unused bytes on all pages......................... 4088 99.80%
*** Table SUBMISSIONS_FAILED and all its indices ******************************
Percentage of total database...................... 0.038%
Number of entries................................. 0
Bytes of storage consumed......................... 8192
Bytes of payload.................................. 0 0.0%
Bytes of metadata................................. 16 0.20%
Average payload per entry......................... 0.0
Average unused bytes per entry.................... 0.0
Average metadata per entry........................ 0.0
Maximum payload per entry......................... 0
Entries that use overflow......................... 0
Primary pages used................................ 2
Overflow pages used............................... 0
Total pages used.................................. 2
Unused bytes on primary pages..................... 8176 99.80%
Unused bytes on overflow pages.................... 0
Unused bytes on all pages......................... 8176 99.80%
*** Table SUBMISSIONS_FAILED w/o any indices **********************************
Percentage of total database...................... 0.019%
Number of entries................................. 0
Bytes of storage consumed......................... 4096
Bytes of payload.................................. 0 0.0%
Bytes of metadata................................. 8 0.20%
B-tree depth...................................... 1
Average payload per entry......................... 0.0
Average unused bytes per entry.................... 0.0
Average metadata per entry........................ 0.0
Maximum payload per entry......................... 0
Entries that use overflow......................... 0
Primary pages used................................ 1
Overflow pages used............................... 0
Total pages used.................................. 1
Unused bytes on primary pages..................... 4088 99.80%
Unused bytes on overflow pages.................... 0
Unused bytes on all pages......................... 4088 99.80%
*** Index SQLITE_AUTOINDEX_SUBMISSIONS_FAILED_1 of table SUBMISSIONS_FAILED ***
Percentage of total database...................... 0.019%
Number of entries................................. 0
Bytes of storage consumed......................... 4096
Bytes of payload.................................. 0 0.0%
Bytes of metadata................................. 8 0.20%
B-tree depth...................................... 1
Average payload per entry......................... 0.0
Average unused bytes per entry.................... 0.0
Average metadata per entry........................ 0.0
Maximum payload per entry......................... 0
Entries that use overflow......................... 0
Primary pages used................................ 1
Overflow pages used............................... 0
Total pages used.................................. 1
Unused bytes on primary pages..................... 4088 99.80%
Unused bytes on overflow pages.................... 0
Unused bytes on all pages......................... 4088 99.80%
*** Definitions ***************************************************************
Page size in bytes
The number of bytes in a single page of the database file.
Usually 1024.
Number of pages in the whole file
The number of 4096-byte pages that go into forming the complete
database
Pages that store data
The number of pages that store data, either as primary B*Tree pages or
as overflow pages. The number at the right is the data pages divided by
the total number of pages in the file.
Pages on the freelist
The number of pages that are not currently in use but are reserved for
future use. The percentage at the right is the number of freelist pages
divided by the total number of pages in the file.
Pages of auto-vacuum overhead
The number of pages that store data used by the database to facilitate
auto-vacuum. This is zero for databases that do not support auto-vacuum.
Number of tables in the database
The number of tables in the database, including the SQLITE_SCHEMA table
used to store schema information.
Number of indices
The total number of indices in the database.
Number of defined indices
The number of indices created using an explicit CREATE INDEX statement.
Number of implied indices
The number of indices used to implement PRIMARY KEY or UNIQUE constraints
on tables.
Size of the file in bytes
The total amount of disk space used by the entire database files.
Bytes of user payload stored
The total number of bytes of user payload stored in the database. The
schema information in the SQLITE_SCHEMA table is not counted when
computing this number. The percentage at the right shows the payload
divided by the total file size.
Percentage of total database
The amount of the complete database file that is devoted to storing
information described by this category.
Number of entries
The total number of B-Tree key/value pairs stored under this category.
Bytes of storage consumed
The total amount of disk space required to store all B-Tree entries
under this category. The is the total number of pages used times
the pages size.
Bytes of payload
The amount of payload stored under this category. Payload is the data
part of table entries and the key part of index entries. The percentage
at the right is the bytes of payload divided by the bytes of storage
consumed.
Bytes of metadata
The amount of formatting and structural information stored in the
table or index. Metadata includes the btree page header, the cell pointer
array, the size field for each cell, the left child pointer or non-leaf
cells, the overflow pointers for overflow cells, and the rowid value for
rowid table cells. In other words, metadata is everything that is neither
unused space nor content. The record header in the payload is counted as
content, not metadata.
Average payload per entry
The average amount of payload on each entry. This is just the bytes of
payload divided by the number of entries.
Average unused bytes per entry
The average amount of free space remaining on all pages under this
category on a per-entry basis. This is the number of unused bytes on
all pages divided by the number of entries.
Non-sequential pages
The number of pages in the table or index that are out of sequence.
Many filesystems are optimized for sequential file access so a small
number of non-sequential pages might result in faster queries,
especially for larger database files that do not fit in the disk cache.
Note that after running VACUUM, the root page of each table or index is
at the beginning of the database file and all other pages are in a
separate part of the database file, resulting in a single non-
sequential page.
Maximum payload per entry
The largest payload size of any entry.
Entries that use overflow
The number of entries that user one or more overflow pages.
Total pages used
This is the number of pages used to hold all information in the current
category. This is the sum of index, primary, and overflow pages.
Index pages used
This is the number of pages in a table B-tree that hold only key (rowid)
information and no data.
Primary pages used
This is the number of B-tree pages that hold both key and data.
Overflow pages used
The total number of overflow pages used for this category.
Unused bytes on index pages
The total number of bytes of unused space on all index pages. The
percentage at the right is the number of unused bytes divided by the
total number of bytes on index pages.
Unused bytes on primary pages
The total number of bytes of unused space on all primary pages. The
percentage at the right is the number of unused bytes divided by the
total number of bytes on primary pages.
Unused bytes on overflow pages
The total number of bytes of unused space on all overflow pages. The
percentage at the right is the number of unused bytes divided by the
total number of bytes on overflow pages.
Unused bytes on all pages
The total number of bytes of unused space on all primary and overflow
pages. The percentage at the right is the number of unused bytes
divided by the total number of bytes.
*******************************************************************************
The entire text of this report can be sourced into any SQL database
engine for further analysis. All of the text above is an SQL comment.
The data used to generate this report follows:
*/
BEGIN;
CREATE TABLE space_used(
name clob, -- Name of a table or index in the database file
tblname clob, -- Name of associated table
is_index boolean, -- TRUE if it is an index, false for a table
is_without_rowid boolean, -- TRUE if WITHOUT ROWID table
nentry int, -- Number of entries in the BTree
leaf_entries int, -- Number of leaf entries
depth int, -- Depth of the b-tree
payload int, -- Total amount of data stored in this table or index
ovfl_payload int, -- Total amount of data stored on overflow pages
ovfl_cnt int, -- Number of entries that use overflow
mx_payload int, -- Maximum payload size
int_pages int, -- Number of interior pages used
leaf_pages int, -- Number of leaf pages used
ovfl_pages int, -- Number of overflow pages used
int_unused int, -- Number of unused bytes on interior pages
leaf_unused int, -- Number of unused bytes on primary pages
ovfl_unused int, -- Number of unused bytes on overflow pages
gap_cnt int, -- Number of gaps in the page layout
compressed_size int -- Total bytes stored on disk
);
INSERT INTO space_used VALUES('sqlite_schema','sqlite_schema',0,0,15,15,1,3076,0,0,496,0,1,0,0,844,0,0,4096);
INSERT INTO space_used VALUES('_sqlx_migrations','_sqlx_migrations',0,0,3,3,1,285,0,0,102,0,1,0,0,3791,0,0,4096);
INSERT INTO space_used VALUES('sqlite_autoindex__sqlx_migrations_1','_sqlx_migrations',1,0,3,3,1,29,0,0,10,0,1,0,0,4050,0,0,4096);
INSERT INTO space_used VALUES('submissions','submissions',0,0,3,3,1,159,0,0,53,0,1,0,0,3917,0,0,4096);
INSERT INTO space_used VALUES('sqlite_autoindex_submissions_1','submissions',1,0,3,3,1,35,0,0,12,0,1,0,0,4044,0,0,4096);
INSERT INTO space_used VALUES('submissions_completed','submissions_completed',0,0,0,0,1,0,0,0,0,0,1,0,0,4088,0,0,4096);
INSERT INTO space_used VALUES('sqlite_autoindex_submissions_completed_1','submissions_completed',1,0,0,0,1,0,0,0,0,0,1,0,0,4088,0,0,4096);
INSERT INTO space_used VALUES('submissions_failed','submissions_failed',0,0,0,0,1,0,0,0,0,0,1,0,0,4088,0,0,4096);
INSERT INTO space_used VALUES('sqlite_autoindex_submissions_failed_1','submissions_failed',1,0,0,0,1,0,0,0,0,0,1,0,0,4088,0,0,4096);
INSERT INTO space_used VALUES('chunks','chunks',0,0,301592,300000,3,4701306,0,0,16,5,1593,0,6172,27388,0,1592,6545408);
INSERT INTO space_used VALUES('sqlite_autoindex_chunks_1','chunks',1,0,300000,298285,3,5268411,0,0,18,13,1716,0,10927,881902,0,1669,7081984);
INSERT INTO space_used VALUES('chunks_completed','chunks_completed',0,0,0,0,1,0,0,0,0,0,1,0,0,4088,0,0,4096);
INSERT INTO space_used VALUES('sqlite_autoindex_chunks_completed_1','chunks_completed',1,0,0,0,1,0,0,0,0,0,1,0,0,4088,0,0,4096);
INSERT INTO space_used VALUES('chunks_failed','chunks_failed',0,0,0,0,1,0,0,0,0,0,1,0,0,4088,0,0,4096);
INSERT INTO space_used VALUES('sqlite_autoindex_chunks_failed_1','chunks_failed',1,0,0,0,1,0,0,0,0,0,1,0,0,4088,0,0,4096);
INSERT INTO space_used VALUES('random_chunks_order','chunks',1,0,300000,298075,3,6317802,0,0,22,15,1926,0,7241,702005,0,1339,7950336);
COMMIT;