发布时间：2013-09-23 17:30:52
This has been asked earlier but don't want to update the same thread again as it was a old thread .Want to clarify myself on the "buffers" and "cache" column from the output of free command.This is what my understanding...Buffer is something where data is there in memory but .........【阅读全文】
发布时间：2013-07-30 08:52:38
死锁：就是多个进程（≥2）因为争夺资源而相互等待的一种现象，若无外力推动，将无法继续运行下去。注意，只有在多进程或者多线程之间或者他们与中断之间相互通讯或者共享资源才有可能发生死锁，单线程或者进程之间没有联系的话，一般不会发生死锁。锁的种类比较多，这里主要说自旋锁和信号量。两者的差别就在于前者获.........【阅读全文】
