Saving this re-compilation step can result in a significantly lower number of calls to the JDBC driver and improve the performance of your application.
省去重新编译的步骤可以极大降低调用JDBC驱动程序的次数,并且提高应用程序的性能。
2
At the requested interval, swtrace will make an ioctl call to the Performance Inspector device driver to retrieve idle information.