The A/D bits exist entirely for the operating system's benefit. The Accessed bit tells the OS which pages have been recently used, enabling page replacement algorithms to choose pages to evict when memory runs low. The Dirty bit tells the OS which pages have been modified and must be written back to disk before eviction; clean pages can simply be discarded and re-read from disk later.
This story was originally featured on Fortune.com
。业内人士推荐im钱包官方下载作为进阶阅读
We'll take a 25x speedup。关于这个话题，WPS官方版本下载提供了深入分析
5月20日，四川省宜宾市屏山县经济开发区发生一起人为纵火案件，犯罪嫌疑人文某（男，27岁）在四川锦裕纺织有限公司车间纵火并刺伤一名财务人员，引发广泛社会关注。由于车间内堆放大量棉纺物，火势迅速蔓延，消防部门经过数小时扑救才控制住火情。案发后，网络流传“文某因800元工资被克扣而纵火”的说法。屏山县公安局表示该说法不实，文某的工资已按合同结算，其行为系个人心理问题导致。
Multi-platform scheduling