我也纠结这个问提。
看微软官方解释:
http://blogs.msdn.com/b/e7/archi ... ate-drives-and.aspx
注意这段:
Will Superfetch be disabled on SSDs?
Yes, for most systems with SSDs.
If the system disk is an SSD, and the SSD performs adequately on random reads and doesn’t have glaring performance issues with random writes or flushes, then Superfetch, boot prefetching, application launch prefetching, ReadyBoost and ReadDrive will all be disabled.
Initially, we had configured all of these features to be off on all SSDs, but we encountered sizable performance regressions on some systems. In root causing those regressions, we found that some first generation SSDs had severe enough random write and flush problems that ultimately lead to disk reads being blocked for long periods of time. With Superfetch and other prefetching re-enabled, performance on key scenarios was markedly improved.
我英文不好,大概意思是默认关闭SSD系统盘的Superfetch ,只有少数早一代的SSD有问题,可能需要重新打开Superfetch提升性能 。 |