When not running MAX I/O rates, Vdbench uses Solaris sleep functions. Because the default granularity of the clock timers is one clock tick every 10 milliseconds, it is recommended to add set hires_tick=1 to /etc/system and reboot.
This allows I/O's to be started about 10 milliseconds closer to their expected start time.
在非最大I/O速率下运行时，Vdbench会使用Solaris的sleep功能。由于时钟定时器的默认粒度是每10毫秒一个时钟滴答，建议在/etc/system中添加set hires_tick=1并重新启动系统。
这样可以使I/O大约提前10毫秒启动，接近其预期的开始时间。