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WB22 vs WB27 runtime memory problem
Posted by pao
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WB22 vs WB27 runtime memory problem March 18, 2023 03:23PM |
Registered: 5 years ago Posts: 296 |
I'm in trouble after the migration to WB27.
I'm getting OUT OF MEMORY errors in all my clients.
Running the same app with the same ORACLE DB, the same ORACLE client and in the same server (windows 2019) the memory behavior is very diferent.
In the attach images is the memory usage of the session in WB22 and in WB27 using exaclty the same page wtih the same data and running in the same server.
In WB22 the WAS release almost all the memory after sending the page to the browser.
In WB27 the WAS keeps almost all the memory after sending the page to the browser.
This is one huge diference in memory usage when we have several user (+200) at the same time.
Any help is apreciated, i don't know what to say to my clients and the app is crashing in almost all of them.
Regards
Paulo Oliveira
Edited 2 time(s). Last edit at 03/20/2023 06:28PM by pao.
I'm getting OUT OF MEMORY errors in all my clients.
Running the same app with the same ORACLE DB, the same ORACLE client and in the same server (windows 2019) the memory behavior is very diferent.
In the attach images is the memory usage of the session in WB22 and in WB27 using exaclty the same page wtih the same data and running in the same server.
In WB22 the WAS release almost all the memory after sending the page to the browser.
In WB27 the WAS keeps almost all the memory after sending the page to the browser.
This is one huge diference in memory usage when we have several user (+200) at the same time.
Any help is apreciated, i don't know what to say to my clients and the app is crashing in almost all of them.
Regards
Paulo Oliveira
Edited 2 time(s). Last edit at 03/20/2023 06:28PM by pao.
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Re: WB22 vs WB27 runtime memory problem March 22, 2023 01:29PM |
Registered: 5 years ago Posts: 296 |
Answer from PCSOFT is it helps anyone:
There is no significant increase in memory usage between version 22 and version 28.
However, major changes in the handling the memory have occurred. The memory really used by version 22 was hidden to the task manager (cached in memory or cached on disk).
The drawback was poor performance (1.000.000 times slower in the worst case).
This technique has been abandoned to use faster ways to access the memory.
We wish you great success developing with our products.
Regards
Paulo Oliveira
There is no significant increase in memory usage between version 22 and version 28.
However, major changes in the handling the memory have occurred. The memory really used by version 22 was hidden to the task manager (cached in memory or cached on disk).
The drawback was poor performance (1.000.000 times slower in the worst case).
This technique has been abandoned to use faster ways to access the memory.
We wish you great success developing with our products.
Regards
Paulo Oliveira
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Re: WB22 vs WB27 runtime memory problem March 22, 2023 03:35PM |
Registered: 2 years ago Posts: 54 |
On my WB25 app the memory shown in Task Manager per WD250Session ranges from 12MB to over 150MB. Average probably around 70MB.
I've tried various ways to reduce it but mostly they have had other undesirable side effects. I rather use some keep-alive technology to keep actual connected sessions alive - then I have a short timeout on the app server. I have found this more effective in reducing the amount of memory consumed on the server.
Regards
Gavin
I've tried various ways to reduce it but mostly they have had other undesirable side effects. I rather use some keep-alive technology to keep actual connected sessions alive - then I have a short timeout on the app server. I have found this more effective in reducing the amount of memory consumed on the server.
Regards
Gavin