Hi,
It can be several reasons.
Try ##7, 20, 21, 23 from this list
https://www.ib-aid.com/en/articles/45-ways-to-speed-up-firebird-database/
Regards,
Alexey
On 15.08.2017 19:50, anderphil...@hotmail.com [firebird-support] wrote:
Hi, I have a strange problem which is probably quite obvious to
someone. If anyone could help it would be much appreciated.
We run a site connected to a Firebird database, its only about 700MB
in size. We have started running into a regular slowdown of the site
and have narrowed it down to the database.
The site runs very slowly (7000ms to 8000ms response times) when
usually it is in the 2000-3000 region.
The odd thing I have discovered is that the site works at normal
speed, IF I run a SELECT on a couple of the tables in FlameRobin and
keep them open and the transcations uncommited.
The differnce in the web app response time goes from 2000-3000ms to
7000ms-8000ms just a couple of seconds after commiting the
transactions and closing flame robin. Opening them again and running
the select will bring the app response time right down.
In Process Monitor fbserver.exe uses only roughly 50,000k which seems
quite low and the server still has over 62% ram free.
The server specs are:
4x Intel(R) Xeon(R) CPU X5650 @ 2.67GHz
physical memory : 4096 MB
7gb disk free
Firebird 2.5.3 x64 super server
Windows 2008 R2
iis 8.5
The application is a remobjects server connected to a ISAPI dll.
We are running a (perhaps out of date) optimised flamerobin.conf file.
Here are the non hashed lines:
DefaultDbCachePages = 384
TempBlockSize = 2048576
TempCacheLimit = 77108864
LockMemSize = 7048576
LockHashSlots = 30011
CpuAffinityMask = 15
I have tried increasing the DefaultDbCachePages to 9999 and it did not
make a difference
Any help appreciated.
Thankyou
Regards
Philip
