Hey Neil, That’s interesting. This client, although in 4D v17.2 (yes unicode), hates upgrading. So I will have to code in v17 efficiency.
I think I’d be find with the slowness if I can figure out why the routine either stalls or timeout or suddenly cannot find the disk. I do think writing the file locally and then moving it makes a lot of sense. Right now they choose the path to save files to but it would b easy enough to create it locally move doc into the path. Thanks for the ideas! John… > On Apr 15, 2020, at 1:48 PM, Neil Dennis <npden...@greatext.com> wrote: > >> The fastest way to build the output is probably with a pre-sized blob, and >> using TEXT TO BLOB with the offset parameter. Pushing elements into a >> collection and then using collection.join() is also pretty fast, but again >> you’d have to test to see how large a text variable can actually be, and >> whether the limit was large enough both interpreted and compiled. If you >> don’t have enough RAM for a 1GB blob, smaller blobs may work with SEND >> PACKET. > > I ran some speed tests using 4D v18 on Windows 10. The results were > interesting… in times past it was much faster to run a report using an > internal buffer of some sort such as a text or blob variable. My resent tests > showed it was faster to use SEND PACKET without buffering anything. > > Again I was testing with 4D v18 and results may vary. > > I’m assuming you are using unicode on your app? I think you can still do > that, but I’m not sure. If you are not in unicode you should switch. > > With unicode on a text can be very large. For imports I just use Document to > Text. When exporting, large text vars can slow down as the resizing of them > becomes slow. You could try filling a blob, but like I said SEND PACKT seemed > to me to be the fastest option. > > As was mentioned be sure to build your document local in the temp folder then > move it to its home on the network. Writing across the network to create a > file is slow and prone to error. > > Neil ********************************************************************** 4D Internet Users Group (4D iNUG) Archive: http://lists.4d.com/archives.html Options: https://lists.4d.com/mailman/options/4d_tech Unsub: mailto:4d_tech-unsubscr...@lists.4d.com **********************************************************************
