Hello, Thomas!

Friday, June 10, 2011, 3:28:25 PM, you wrote:

TS> I'm confused now. ;-) I don't find FileSystemCacheSize in firebird.conf,
TS> thus I guess it isn't a V2.5 setting?

maybe you rewrote FB 2.5 firebird.conf with an old one?
#FileSystemCacheSize = 30
is there.

TS> So, in respect to memory usage: Is the worst case that pages are cached
TS> in both, Firebird page cache and OS file system cache? Is this possible?

not worst. It always was. OS was always cacheing FB/IB files.
but the cache systems in FB and OS are different.
You may try to disable OS file cache turning
FileSystemCacheSize = 0

but be sure that DB page size is the same as FS cluster size,
or you will see bad performance (anyway, you will see lower
performance turning FS cache off).

-- 
Dmitry Kuzmenko, www.ibase.ru, (495) 953-13-34


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