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Hello,
Will someone confirm if I have correctly interpreted the memory info. in the QDS task log? Thank you!
Physical FileSize=101.30 Mb.
Definition: the file size of the source .qvw i?
Memory Allocation Delta for this file=516.33 Mb.
Definition: the difference between the physical file size and the amount of memory allocated for the source document in RAM; if you add Physical FileSize and Memory Allocation Delta the result is the amount of RAM the source document uses in memory? (e.g. 617.63 MB)?
Available Physical Memory Before Open=560179.90 Mb.
Definition: of the memory allocated to QVS, this value represents the total amount of memory not in use by QVS prior to document reload into memory?
Available Physical Memory After Open=560377.43 Mb.
Definition: of the total amount of memory allocated to the QVS, this is the amount of memory in use after the document has been reloaded into memory?
Total Physical Memory=1048467.25 Mb.
Definition: total amount of memory allocated to the QVS?
I spoke with an architect from Qlik and he provided me with the correct definitions:
BEFORE RELOAD
Physical FileSize | Size of the qvw |
Memory allocation delta for this file | (QVB memory usage after opening the document) - (QVB memory usage before opening the document). The important thing here is that this refers to opening the document but not loading the data into memory. |
Available physical memory before open | Available physical memory before opening the document |
Available physical memory after open | Available physical memory after opening the document |
Total physical memory | Total is the key word |
LOG SAMPLE: Physical FileSize=166.22 Mb. Memory Allocation Delta for this file=3.14 Mb. Available Physical Memory Before Open=2940.29 Mb. Available Physical Memory After Open=2935.09 Mb. Total Physical Memory=4095.55 Mb.
AFTER RELOAD
Memory allocation delta for this file | (QVB memory usage after reload) - (QVB memory usage before reload) |
Available physical memory before reload | Available physical memory before doing the reload |
Available physical memory after reload | Available physical memory after doing the reload |
Total physical memory | Available physical memory From 12.20 onwards, this is changed to "Available physical memory". |
LOG SAMPLE: Memory Allocation Delta for this file=368.16 Mb. Available Physical Memory Before Reload=2935.08 Mb. Available Physical Memory After Reload=2751.88 Mb. Total Physical Memory=2751.88 Mb.
I have not dug down into these numbers but I think your interpretations look generally good. I'd be careful with making assertions about QVS from QDS log messages. You are assuming that any memory not available to QDS is consumed by QVS, which is probably reasonable if both services are on the same box and there are no other significant memory consumers on the box.
Re the Memory Allocation Delta. I interpret this to be the memory required for the loaded document. I would not add the physical file size.
-Rob
I spoke with an architect from Qlik and he provided me with the correct definitions:
BEFORE RELOAD
Physical FileSize | Size of the qvw |
Memory allocation delta for this file | (QVB memory usage after opening the document) - (QVB memory usage before opening the document). The important thing here is that this refers to opening the document but not loading the data into memory. |
Available physical memory before open | Available physical memory before opening the document |
Available physical memory after open | Available physical memory after opening the document |
Total physical memory | Total is the key word |
LOG SAMPLE: Physical FileSize=166.22 Mb. Memory Allocation Delta for this file=3.14 Mb. Available Physical Memory Before Open=2940.29 Mb. Available Physical Memory After Open=2935.09 Mb. Total Physical Memory=4095.55 Mb.
AFTER RELOAD
Memory allocation delta for this file | (QVB memory usage after reload) - (QVB memory usage before reload) |
Available physical memory before reload | Available physical memory before doing the reload |
Available physical memory after reload | Available physical memory after doing the reload |
Total physical memory | Available physical memory From 12.20 onwards, this is changed to "Available physical memory". |
LOG SAMPLE: Memory Allocation Delta for this file=368.16 Mb. Available Physical Memory Before Reload=2935.08 Mb. Available Physical Memory After Reload=2751.88 Mb. Total Physical Memory=2751.88 Mb.