I'm actually having this same problem with one of my clients. He have two servers with x64 Windows and 8Gb of RAM. One of them is xp, the other is seven. I tested Firebird 2.5.2 x32 and x64... change various configuration and no success yet to reduce the consume of memory... that after a while get between 80 and 90% and reduce the performance of the system Em 27/08/2013 22:25, "安占江" <anzhanji...@gvitech.com> escreveu:
> ** > > > 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] > > > [Non-text portions of this message have been removed]
