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Memory leak when reading blob fields |
Fri, May 2 2008 8:11 AM | Permanent Link |
Manuel Sebares | Hi all. I am using D7 and Dbisam 4.25.
I have a database with some megabytes files (5MB to 25MB) stored in blob fields. When I use the Blob SaveToFile routine in Local mode, the program takes memory and releases it after the operation. When I perform the same operation in C/S mode, the memory is never released. In this situation, if I close the table and open it again, it takes even more memory and slows down the performance of the database with a 100% CPU consumption. The only solution I have found is closing the session. I have found many posts with the same problem in this newsgroup, but NONE of them shows solution to the problem. Please, I need urgent help because if I do not solve this problem my current project will sink in C/S mode. Thanks. Manuel Sebares |
Fri, May 2 2008 9:44 AM | Permanent Link |
Tim Young [Elevate Software] Elevate Software, Inc. timyoung@elevatesoft.com | Manuel,
<< When I perform the same operation in C/S mode, the memory is never released.In this situation, if I close the table and open it again, it takes even more memory and slows down the performance of the database with a 100% CPU consumption. >> How are you gauging the memory consumption ? If it's the task manager, then that's not going to be accurate for such purposes. Also, how many times are you calling SaveToFile and is 25MB the largest BLOB that you're saving ? I'm trying it here with 4.26 and a 34 meg Memo field (also a BLOB) and I do not see what you are describing at all. However, as of 4.26 we're using the FastMM memory manager instead of our own, so that may account for the difference. << I have found many posts with the same problem in this newsgroup, but NONE of them shows solution to the problem. >> Links, please ? -- Tim Young Elevate Software www.elevatesoft.com |
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