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Marko Mäkelä 67da6e6388 MDEV-34431: Avoid spin loops on page I/O waits 
While waiting for for I/O completion, let us skip spin loops.
Even on fast storage, reading a page into the buffer pool takes
so long that a spin loop would only end up wasting CPU time.

block_lock::s_lock_nospin(): A no-spin variant of acquiring a shared
buffer page latch. Regular s_lock() always involveis a spin loop.

ssux_lock_impl::rd_lock_spin(), ssux_lock_impl::rd_lock_nospin():
Split from rd_wait().

ssux_lock_impl::rd_lock(): Invoke either rd_lock_nospin() or
rd_lock_try() and rd_lock_spin().

buf_page_get_low(): After acquiring a page latch on an io-fixed block,
try to optimize operations on the page latch.
2025-07-21 09:50:00 +03:00
..
btr Merge branch '10.11' into 11.4 2025-06-17 09:50:22 +02:00
buf MDEV-34431: Avoid spin loops on page I/O waits 2025-07-21 09:50:00 +03:00
data MDEV-29694 Remove the InnoDB change buffer 2023-01-11 17:59:36 +02:00
dict Merge 10.11 into 11.4 2025-05-13 13:44:58 +03:00
eval MDEV-26938 Support descending indexes internally in InnoDB 2022-01-26 18:43:05 +01:00
fil Merge branch '10.11' into 11.4 2025-06-17 09:50:22 +02:00
fsp MDEV-35689 InnoDB system tables cannot be optimized or defragmented 2025-04-10 17:13:34 +05:30
fts MDEV-35000: dict_table_close() breaks STATS_AUTO_RECALC 2025-02-28 09:00:16 +02:00
fut MDEV-35689 InnoDB system tables cannot be optimized or defragmented 2025-04-10 17:13:34 +05:30
gis Merge 10.11 into 11.4 2025-03-28 13:55:21 +02:00
ha MDEV-35472 Server crash in ha_storage_put_memlim upon reading from INNODB_LOCKS 2024-11-25 10:31:57 +02:00
handler MDEV-34431: Ignore innodb_sync_spin_loops on Windows 2025-07-21 09:47:11 +03:00
ibuf MDEV-29445: Reimplement SET GLOBAL innodb_buffer_pool_size 2025-03-26 17:05:44 +02:00
include MDEV-34431: Avoid spin loops on page I/O waits 2025-07-21 09:50:00 +03:00
lock Merge branch '10.11' into 11.4 2025-04-26 10:53:02 +02:00
log Merge branch '10.11' into 11.4 2025-04-26 10:53:02 +02:00
mem Cleanup: Remove duplicated code 2024-11-29 14:16:34 +02:00
mtr Merge 10.11 into 11.4 2025-05-13 13:44:58 +03:00
mysql-test/storage_engine Remove dates from all rdiff files 2025-01-05 16:40:11 +02:00
os Merge branch '10.11' into 11.4 2025-04-26 10:53:02 +02:00
page Merge 10.11 into 11.4 2024-12-02 11:35:34 +02:00
pars Merge 10.6 into 10.11 2025-02-25 10:23:24 +02:00
que MDEV-24035 Failing assertion: UT_LIST_GET_LEN(lock.trx_locks) == 0 causing disruption and replication failure 2024-12-12 18:02:00 +02:00
read MDEV-34515: Contention between purge and workload 2024-08-26 12:23:06 +03:00
rem Merge 10.11 into 11.0 2024-03-28 10:51:36 +02:00
row Merge branch '10.11' into 11.4 2025-06-17 09:50:22 +02:00
srv MDEV-34431: Ignore innodb_sync_spin_loops on Windows 2025-07-21 09:47:11 +03:00
sync MDEV-34431: Avoid spin loops on page I/O waits 2025-07-21 09:50:00 +03:00
trx Merge branch '10.11' into 11.4 2025-06-17 09:50:22 +02:00
unittest MDEV-35587 unit.innodb_sync leaks memory on mac 2024-12-12 10:27:36 +11:00
ut MDEV-36759: Huge performance drop 2025-05-13 12:27:50 +03:00
.clang-format-old switch off storage/innobase/.clang-format: InnoDB uses a common formatting style for all new code 2021-03-17 11:01:15 +03:00
CMakeLists.txt Merge branch '10.11' into 11.4 2025-06-17 09:50:22 +02:00
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