disk thrashing

基本解释

It spent most of its time waiting for the swap disk, thrashing like Emacs on a VAX.
大多数时间都花在等待交换磁盘上，就像 VAX 上的 Emacs 一样。
Increase automatic cache size when cache thrashing increases the disk cache size when reading from disk increases (most often due to increased upload speeds).
当磁盘读取频率增加时（通常是由于增加了上传速度），增加缓存大小。
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In contrast, when ext3 (in "data=ordered" mode, the default) flushes data to the drive, it can result in a lot of additional seeks and, depending on the IO load, even some unnecessary disk thrashing.
相反，在 ext3（“data=ordered”缺省方式）下，将数据清仓到磁盘时，将导致许多额外寻道，甚至还会引起某种不必要的磁盘抖动（thrashing）（取决于 IO 负载）。