Just upgraded from 10.6.12 to 10.6.13 on a Debian Bullseye system, and
seeing this oddity. Innodb_buffer_pool_read_requests is zero, and
seems to remain at zero no matter what I do (I even tried selecting
all the data from a small table several times in a row with no
change). It's been running a couple hours now; I've restarted it a
couple times. I have 10.6.13 on a few other platforms as well
(including Buster), and I'm not seeing the same issue on them. What
would cause this? I have no other Bullseye systems running 10.6.13
yet, and the same system has been running 10.6.12 for over a week now
without showing this issue.
The system _seems_ to be running fine, it's a replica system that is
being fed actively from the master (data comes in to it very regularly).
MariaDB [(none)]> SHOW GLOBAL STATUS LIKE 'innodb_buffer_pool_%';
+-----------------------------------------+--------------------------------------------------+
| Variable_name | Value |
+-----------------------------------------+--------------------------------------------------+
| Innodb_buffer_pool_dump_status | |
| Innodb_buffer_pool_load_status | Buffer pool(s) load
completed at 230511 23:21:26 |
| Innodb_buffer_pool_resize_status | |
| Innodb_buffer_pool_load_incomplete | OFF |
| Innodb_buffer_pool_pages_data | 609103 |
| Innodb_buffer_pool_bytes_data | 9979543552
|
| Innodb_buffer_pool_pages_dirty | 19465 |
| Innodb_buffer_pool_bytes_dirty | 318914560
|
| Innodb_buffer_pool_pages_flushed | 0 |
| Innodb_buffer_pool_pages_free | 299441 |
| Innodb_buffer_pool_pages_made_not_young | 0 |
| Innodb_buffer_pool_pages_made_young | 107 |
| Innodb_buffer_pool_pages_misc | 0 |
| Innodb_buffer_pool_pages_old | 224824 |
| Innodb_buffer_pool_pages_total | 908544 |
| Innodb_buffer_pool_pages_lru_flushed | 0 |
| Innodb_buffer_pool_pages_lru_freed | 0 |
| Innodb_buffer_pool_pages_split | 726 |
| Innodb_buffer_pool_read_ahead_rnd | 0 |
| Innodb_buffer_pool_read_ahead | 3 |
| Innodb_buffer_pool_read_ahead_evicted | 0 |
| Innodb_buffer_pool_read_requests | 0 |
| Innodb_buffer_pool_reads | 604346 |
| Innodb_buffer_pool_wait_free | 0 |
| Innodb_buffer_pool_write_requests | 3639341 |
+-----------------------------------------+--------------------------------------------------+
25 rows in set (0.000 sec)
MariaDB [(none)]> SHOW VARIABLES LIKE 'innodb_buffer_pool%';
+-------------------------------------+----------------+
| Variable_name | Value |
+-------------------------------------+----------------+
| innodb_buffer_pool_chunk_size | 134217728 |
| innodb_buffer_pool_dump_at_shutdown | ON |
| innodb_buffer_pool_dump_now | OFF |
| innodb_buffer_pool_dump_pct | 80 |
| innodb_buffer_pool_filename | ib_buffer_pool |
| innodb_buffer_pool_load_abort | OFF |
| innodb_buffer_pool_load_at_startup | ON |
| innodb_buffer_pool_load_now | OFF |
| innodb_buffer_pool_size | 15032385536 |
+-------------------------------------+----------------+
9 rows in set (0.000 sec)
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