commit 78564373fee5e6cccf144b11bc60b0876b4bbd0b
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Author: Monty <monty@mariadb.org>
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Date: Fri Aug 29 14:07:43 2014 +0300
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my_alloc.c
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- Changed 0x%lx -> %p
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array.c:
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- Static (preallocated) buffer can now be anywhere
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my_sys.h
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- Define MY_INIT_BUFFER_USED
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sql_delete.cc & sql_lex.cc
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- Use memroot when allocating classes (avoids call to current_thd)
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sql_explain.h:
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- Use preallocated buffers
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sql_explain.cc:
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- Use preallocated buffers and memroot
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sql_select.cc:
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- Use multi_alloc_root() instead of many alloc_root()
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- Update calls to Explain
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commit 3392278c869a9594f13a0b956d34efb600ab0ed0
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Author: Sergey Vojtovich <svoj@mariadb.org>
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Date: Thu Dec 4 17:44:46 2014 +0400
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MDEV-7004 - Merge scalability fixes from 10.0-power
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Preallocate dynamic array and bitmap on mem_root to avoid expensive malloc.
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This reduces number of allocations from 39 to 31 per OLTP RO transaction.
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commit eaa8c154e81cb3a9a2623f53482fe2bbd9ffa459
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Author: Sergey Vojtovich <svoj@mariadb.org>
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Date: Thu Dec 4 17:42:32 2014 +0400
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MDEV-7004 - Merge scalability fixes from 10.0-power
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Preallocate dynamic array on THD mem_root to avoid expensive malloc.
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commit 070a6e7a890e5a73eb38920657c060605e520b55
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Author: Monty <monty@mariadb.org>
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Date: Fri Aug 29 14:09:51 2014 +0300
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- Changed default values of query_prealloc_size and query_alloc_block_size
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so that a simple query with one join would not have to call my_malloc.
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- Allow lower limites for query_prealloc_size for testing.
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- Fixed wrong initialization of trans_alloc_block_size
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commit 9127784d5ce845c9d66a34eee371cbaf82468d89
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Author: Sergey Vojtovich <svoj@mariadb.org>
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Date: Thu Dec 4 17:35:55 2014 +0400
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Cherry pick dynamic array changes from commit:
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commit 85fd3d901311688e18ffce92ffc78129e5625791
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Author: Monty <monty@mariadb.org>
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Date: Fri Aug 29 14:07:43 2014 +0300
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my_alloc.c
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- Changed 0x%lx -> %p
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array.c:
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- Static (preallocated) buffer can now be anywhere
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my_sys.h
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- Define MY_INIT_BUFFER_USED
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sql_delete.cc & sql_lex.cc
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- Use memroot when allocating classes (avoids call to current_thd)
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sql_explain.h:
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- Use preallocated buffers
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sql_explain.cc:
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- Use preallocated buffers and memroot
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sql_select.cc:
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- Use multi_alloc_root() instead of many alloc_root()
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- Update calls to Explain
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commit 974808772b63563d031f687fd0fd158f83eb94aa
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Author: Sergey Vojtovich <svoj@mariadb.org>
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Date: Tue Dec 2 15:03:35 2014 +0400
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MDEV-7004 - Merge scalability fixes from 10.0-power
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All callers of open_cached_file() use 2 characters prefix. Allocating memory for
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such short string is an overkill. Store it on IO_CACHE structure instead.
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All callers of open_cached_file() use mysql_tmpdir as dir. No need to allocate
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memory for it since it is constant and available till server shutdown.
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This reduces number of allocations from 31 to 27 per OLTP RO transaction.
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commit 9e9f1da0d2dd5d9de9094d20d0b39e71ec4ce479
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Author: Sergey Vojtovich <svoj@mariadb.org>
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Date: Tue Dec 2 14:59:01 2014 +0400
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MDEV-7004 - Merge scalability fixes from 10.0-power
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Remove call to deprecated set_thread_state. It is noop anyway, but generates
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function call independently of performance schema state. According to perf
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this saves ~0.2% of execution time.
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commit b4ec230917a50cbc1e406f5175189c8359bcb9a0
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Author: Sergey Vojtovich <svoj@mariadb.org>
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Date: Tue Dec 2 14:54:30 2014 +0400
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MDEV-7004 - Merge scalability fixes from 10.0-power
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Preallocate locks on THD mem_root to avoid expensive malloc.
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commit 9bc5cec0f115d7d0c277a49b91b96109560280f4
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Author: Sergey Vojtovich <svoj@mariadb.org>
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Date: Tue Dec 2 14:50:18 2014 +0400
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MDEV-7004 - Merge scalability fixes from 10.0-power
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Preallocate locks on THD mem_root to avoid expensive malloc.
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