I'm an owner of EasyQlik QViewer, I installed and tried CSViewer, but the first big difference is that it’s very slow to load QVD files compared with EasyQlik QViewer; is it normal or am I wrong in something?
For example:
on CSViewer there is only the possibility to "import" a file qvd and not just open it?
... but the first big difference is that it’s very slow to load QVD files compared with EasyQlik QViewer
That shouldn't be so. Actually, CSViewer should loads QVDs faster than CSViewer as it's more optimized under the hood. Can you provide more details about the QVD file - its size, number of rows/columns, and also about the difference in load time - how long does it take in CSViewer and how long in QViewer? Also, does the difference remain if you load the file in CSViewer first, and then in QViewer?
on CSViewer there is only the possibility to "import" a file qvd and not just open it?
Both applications are intended for viewing files. What do you mean by "importing"?
OK, I see that the file has 4.7 million records. Can you please answer the other questions:
What's the QVD file size (in megabytes)?
How many columns does the table have?
Is it possible that after loading the QVD file in QViewer your computer doesn't have enough free memory to also load the file in CSViewer while it stays open in QViewer? If you open the file in CSViewer and your computer is running out of memory, then Windows will start swapping memory to disk and it can be a very long operation.
The apps are very similar in the way they handle QVD files, so load times should be very similar in both apps. The 30 second load time doesn't look right.
Is it possible that after loading the QVD file in QViewer your computer doesn't have enough free memory to also load the file in CSViewer while it stays open in QViewer? If you open the file in CSViewer and your computer is running out of memory, then Windows will start swapping memory to disk and it can be a very long operation.
It's not my computer, it's the Qlik server, so well capable as memory. I tried to open first CSViewer but no difference, always more than 30 seconds.
I'm trying also other files; with big files there is so difference in time between CSViewer and EasyQlik.
EasyQlik is really fast!
It turns out the problem was caused by one of the floating point values in the QVD being NaN instead of a valid number. We're working on a fix that will support such cases.
Also, the updated version will load QVDs significantly faster.
I'll let you know when it's available - it shouldn't take long.
just installed and tried my two issues, they are solved!
It last just 8 seconds to load the big table and no problem with the NaN values with the other table.
Great job, thank you!
I think I can pass to CSViewer...