On 2023-12-21 at 10:27:48 +0100, Hans Hagen wrote: > I stop here as I've written plenty about performance the last > decades in various docs,
Hi Hans, please let me mention this though: A few months ago I uncompressed the lualatex format file and compressed it with lz4. The lz4-compressed file was smaller than the original format file. Though I know that luatex doesn't use maximum gzip compression, I didn't really expect this. 26702648 lualatex.fmt-uncompressed 12201683 lualatex.fmt 9926586 lualatex.fmt.lz4 But what I absolutely didn't expect is that de-compression of lz4 files is about 7.5 times as fast as de-compression of the gzip'ed format file. In order to determine speed I directed the de-compressed output to /dev/null because when writing to disk results differ much more between successive runs and a format file is extracted in memory and not written to disk. Maybe it's worthwhile to keep an eye on lz4. Regards, Reinhard -- ------------------------------------------------------------------ Reinhard Kotucha Phone: +49-511-3373112 Marschnerstr. 25 D-30167 Hannover mailto:[email protected] ------------------------------------------------------------------
