Forum .LRN Q&A: Re: Server recommend for dotLRN - with 80.000 users-
webserver (~.LRN 1.0/OACS 4.6.3):
dual Xeon CPU 2.8 GHz, 3 GB RAM (dell 2650)
dual Xeon CPU 2.8 GHz, 4 GB RAM (dell 2650)
(Both also has hyperthreading turned on and a dedicated 1 Gbit network between the two)
On heavy loads we find that it's the oracleserver that has the highest load. I'm wondering if the is anything more to gain by tweaking the aolserver-config:
ns_param maxconnections 50
ns_param maxdropped 0
ns_param maxthreads 50
ns_param minthreads 10
ns_param threadtimeout 120
ns_param connections 6
ns_param connections 16
ns_param connections 5
All feedback appreciated
Why do you have so many more connections in your 2nd database pool than in your first? That seems weird.
On both machines, leaving the P4 hyperthreading turned on is also probably a bad idea unless you have a kernel (Linux 2.6.x, I think) which distinguishes between real and virtual/hyperthread processors.
> much too low, which is worth experimenting with and
ok, will do. thx.
> Why do you have so many more connections in your 2nd
> database pool than in your first? That seems weird.
have turned on logging when pools are empty:
ns_param WarnEmpty true
- and based on the numbers of warnings tried to adjust the settings.
can you tell me what tool you use to log the load on the webserver and the database?
|can you tell me what tool you use to log the load on the
|webserver and the database?
It's mrtg with a custom script to gather information about the load from the two machines (runs uptime via ssh connections and greps for the load).