--- In [email protected], Jordi Puigsegur Figueras <jordi.puigsegur@...> wrote: > > Hi All, > > We use Firebird 2.5 64 bits classic + 64 bit ODBC driver + Windows 2008 R2 > 64 bit. Until now its performance has been exemplary, but recently we have > encountered performance problems when switching from a HP 380G7 with 1 > quad-core to a HP380G7 with 2 six-core (=12 core). In the new machines we > perceive an increase of page faults and disk queues (same load) and we are > unable to take profit of the added power. Similar problems happen also > with HP 580G7 with ten-core processors... > > Both machines have write cache enabled and dedicated database RAID 1 disks. > The database is only 150 Mb. so size shouldn't be a problem. > > Any hints on where is the problem? Is there any konwn problem with six- and > ten-multicore processors under intensive use of Firebird Classic.? >
Try a snapshot for 2.5.2 , page faulting could be a problem of OS caching issue http://dyemanov.blogspot.com/2012/03/firebird-vs-windows-file-system-caching.html
