于 2013年08月27日 23:53, Leyne, Sean 写道: > > > > > I have resolved this question. > > on disk driver property labels, I checked the close window cache on > disk, > > which is unchecked by default. > > but I don't known the reason. > > Actually, changing that setting is VERY DANGEROUS, it could lead to > database corruption! > > The setting tells the OS to assume that the device has a protected > cache (write-back), that will ensure that all writes will be persisted > to storage, even when the power is lost. > > This setting should only applies (be used) with disk controllers with > battery protection or SSDs with power failure protection. > > In your case, a single HDD will have limited performance, period. 83 > IO/sec is not exactly great performance. > > Further, are you aware of the Windows page cache issues on x64 > systems? It can make the system grind. FB v2.5.2 has a fix to help > address the issue, what version are you running? > > Sean > > first, I am sorry for my poor english.
I known what mean of this option. I imagine the main reason is that intel raid chipset has some issues with this option on win7 os. I try two way to validate my guess. 1, use a memory dist to create fdb. 2, change storage protocal from sata/raid to ide /sata on bios setting. the two ways are natural. the fb v2.1 && v2.5.2 have been tested. [Non-text portions of this message have been removed]
