Performance issues with Forms 10G 10.1.2.3.0

Question

Hi,
we are on the way to change our application server back to a smaller machine. At the moment we run the AS on a XEON Quadcore machine running at ~2 GHz with 4 GB memory, let's say AS-Quad. This is the case because we needed an intermediate platform.
Now we want to go to the originally planned harware which is a single Core but Hyperthreaded XEON running between ~2.8 and 3.6 GHz with 12 GB memory, let's say AS-Single.
OS is Windows Server 2003 SP2 64bit on both machines.
Hard Disk is on a SAN for both machines.
Both AS are not loaded right now because were still at the beginning of migrating from Client-Server.
After installing the AS-Single, and copying/moving/changing the configuration files (formsweb.cfg, default.env, ...) from AS-Quad we think we have now 2 Application Servers which are nearly the same.
But we see a big difference which hopefully can be solved :
If we connect to AS-Quad the menu(Tree) and the first Form is displayed in approx 2 seconds, after that a reaction on keystrokes is immediately.
If we connect to AS-Single the menu(Tree) and the first Form is displayed in approx 4 seconds, after that a reaction on keystrokes is very slow for a couple of time.
If we start a form which just displays some records from a table, scrolling through the data on AS-Quad is working fine when we keep KEY-DOWN pressed, the rows flow though the screen quite continually. Only very rarely the scroll stops for a few milliseconds which is acceptable.
On AS-Single doing the same thing, (holding down the Cursor-Down Key) the Rows flow as well, but after some Rows (5 or 10 or maybe 50-100) the screen stops for half a second up to 2 seconds until it continue.
I know, this is not a benchmark which has to be much more complicate and detailed, but it gives a feeling, that the AS-Single might be not performing quite well and thinking about ~ 400 Sessions on 2 of those Servers when running productive we want to eliminate any problems or changes before getting productive.
If anybody has ideas, your welcome.
We also have another question regarding a specific Form comparing Client-Server with Web-Based.
Running that Form on Client-Server doing an execute query and junping to the last record takes ~ 5-10 Minutes. This is due to the fact that it is a complicated form doing a couple of Master-Detail and also Post-Query on some of those data-blocks.
the point is that running on CS the CPU-Load (seen in Windows Task-Manager) is nearly 0. Running the migrated Form on the Application-Server and doing the same, Execute and jump to the last Record, the CPU-Load is ~30-40%. Doing the sam on 4 sessions the Load goes up to 100%.
Is there an explanation for it or do we have to find a reason for it. And if we have to do, where can we start searching for the reason of the CPU-Load.
Thanks again for your ideas.
Mark

Answer 1

Hi,
we are on the way to change our application server back to a smaller machine. At the moment we run the AS on a XEON Quadcore machine running at ~2 GHz with 4 GB memory, let's say AS-Quad. This is the case because we needed an intermediate platform.
Now we want to go to the originally planned harware which is a single Core but Hyperthreaded XEON running between ~2.8 and 3.6 GHz with 12 GB memory, let's say AS-Single.
OS is Windows Server 2003 SP2 64bit on both machines.
Hard Disk is on a SAN for both machines.
Both AS are not loaded right now because were still at the beginning of migrating from Client-Server.
After installing the AS-Single, and copying/moving/changing the configuration files (formsweb.cfg, default.env, ...) from AS-Quad we think we have now 2 Application Servers which are nearly the same.
But we see a big difference which hopefully can be solved :
If we connect to AS-Quad the menu(Tree) and the first Form is displayed in approx 2 seconds, after that a reaction on keystrokes is immediately.
If we connect to AS-Single the menu(Tree) and the first Form is displayed in approx 4 seconds, after that a reaction on keystrokes is very slow for a couple of time.
If we start a form which just displays some records from a table, scrolling through the data on AS-Quad is working fine when we keep KEY-DOWN pressed, the rows flow though the screen quite continually. Only very rarely the scroll stops for a few milliseconds which is acceptable.
On AS-Single doing the same thing, (holding down the Cursor-Down Key) the Rows flow as well, but after some Rows (5 or 10 or maybe 50-100) the screen stops for half a second up to 2 seconds until it continue.
I know, this is not a benchmark which has to be much more complicate and detailed, but it gives a feeling, that the AS-Single might be not performing quite well and thinking about ~ 400 Sessions on 2 of those Servers when running productive we want to eliminate any problems or changes before getting productive.
If anybody has ideas, your welcome.
We also have another question regarding a specific Form comparing Client-Server with Web-Based.
Running that Form on Client-Server doing an execute query and junping to the last record takes ~ 5-10 Minutes. This is due to the fact that it is a complicated form doing a couple of Master-Detail and also Post-Query on some of those data-blocks.
the point is that running on CS the CPU-Load (seen in Windows Task-Manager) is nearly 0. Running the migrated Form on the Application-Server and doing the same, Execute and jump to the last Record, the CPU-Load is ~30-40%. Doing the sam on 4 sessions the Load goes up to 100%.
Is there an explanation for it or do we have to find a reason for it. And if we have to do, where can we start searching for the reason of the CPU-Load.
Thanks again for your ideas.
Mark