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来自「PostgreSQL 8.1.4的源码 适用于Linux下的开源数据库系统」· 代码 · 共 7 行

This program tests fsync.  The tests are described as part of the program output.

	Usage:	test_fsync [-f filename] [loops]

Loops defaults to 1000.  The default output file is /var/tmp/test_fsync.out.
Consider that /tmp or /var/tmp might be memory-based file systems.