On Thu, 6 Jun 2019 15:49:29 -0400 Andrew Piskorski <a...@piskorski.com> wrote:
> However, (particularly given my small writes to many files), clearly > asynchronous file IO should be more efficient, and scale better, so > I'd like to understand how to do that. The ease of simply calling > "fconfigure" on a file handle is attractive, but I don't yet > understand what else I'd need to do to make that seemingly simple > approach actually work in the NaviServer context. OK. You need an extra thread that sits in event loop. Unfortunately NS does not have this setup built-in. But the Tcl threading extension does! You could open the file in your main thread then pass the channel to the special async thread that sits in the event loop (by design) and handle writing, completely asynchhronously, using fconfigure and write-callbacks there. I however do not know if this would save you something, since writing into files, especially if you write small amounts, is heavily cached by the OS. I guess you need to try it yourself. You would need to use [ns_ictl trace create] to load the extension into each interp. This would work. Again, stock NS does not have this kind of (threading) functionality. Over the course of years I wanted to add this but never really got time... _______________________________________________ naviserver-devel mailing list naviserver-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/naviserver-devel
