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[Emk <emk@xxxxxxxxxx>]

I test only 19G and 20G.
Now I understand that really allocated is 3G.
Can I use os0proc.c from std InnoDB, not from XtraDB, is it compatible with XtraDB?
I test idea about 32bit system_info.dwPageSize this evening.
Sorry my english.

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XtraDB don't start if innodb_buffer_pool_size>19G
https://bugs.launchpad.net/bugs/330109
You received this bug notification because you are a member of Percona
developers, which is the registrant for Percona-XtraDB.

Status in Percona XtraDB Storage Engine for MySQL: New

Bug description:
On Intel server (24 core, 48Gb) under Win 2008 I have error when set innodb_buffer_pool_size=20G:
InnoDB: VirtualAlloc(0 bytes) failed; Windows error 87
InnoDB: Fatal error: cannot allocate the memory for the buffer pool

In "std" InnoDB all work fine with  innodb_buffer_pool_size>19G.