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基本关系是：BackgroundWriterMain 循环中，调用 BgBufferSync() -->SyncOneBuffer -->FlushBuffer -->smgrwrite看代码：/* * Main entry point for bgwriter process * * This is invoked from AuxiliaryProcessMain, which has already created the * b... 阅读全文
posted @ 2012-10-24 16:59
健哥的数据花园
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先看代码：src\backend\storage\buffer\bufmgr.c/* * BgBufferSync -- Write out some dirty buffers in the pool. * * This is called periodically by the background writer process. ... 阅读全文
posted @ 2012-10-24 15:32
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代码缩略如下：/* * Main entry point for bgwriter process * * This is invoked from AuxiliaryProcessMain, which has already created the ... 阅读全文
posted @ 2012-10-24 15:05
健哥的数据花园
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看 Postmaster 中如下的代码 /* StartChildProcess -- start an auxiliary process for the postmaster * * xlop determines what kind of child will be started. All child types * initially go to AuxiliaryProcessMain, which will hand... 阅读全文
posted @ 2012-10-24 14:31
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启动PostgreSQL 进程后，可以看到：[root@localhost ~]# ps -ef | grep post root 2991 2925 0 10:42 pts/1 00:00:00 su - postgres postgres 2992 2991 0 10:42 pts/1 00:00:00 -bash postgres 3029 2992 0 10:42 pts/1 00:00:00 /usr/local/pgsql/bin/postgres -D /usr/local/pgsql/data po... 阅读全文
posted @ 2012-10-24 11:22
健哥的数据花园
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如果设定了虚拟机属性的 General Advance 的Shared Clipboard: Bidirectional 后， 仍然不行。则还需装 Virtual Box 的 增强patch。 然后再在虚拟机启动后，Device-->Install Guest Addition挂Guest Addition光盘。cd /mediacp -r ./VBOXADDITIONS_4.2.0_80737/ /tmp/plus/然后进入/tmp/plus 目录，执行安装程序。 阅读全文
posted @ 2012-10-24 11:10
健哥的数据花园
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