On Sat, 20 Apr 2024 at 01:14, Chet Ramey <chet.ra...@case.edu> wrote:
> On 4/17/24 8:55 PM, Martin D Kealey wrote: > > Has anyone tried asking any of the kernel teams (Linux, BSD, or other) to > > add a new system call such as readln() or readd()? > > They'd probably point you to an optimized version of getdelim/getline. > You're just pushing the work down a layer. > Yes, that is exactly my point: move the work to where it can be done most efficiently and most reliably. This efficiency gain isn't some minor quibble; we're talking about a multi-fold increase in performance, perhaps an order of magnitude speed-up reading some text files. (I've done some testing that indicates about a 90% reduction in time spent in kernel calls, but depending on what else is done this might translate to only a 3-fold improvement in practice. Or not be noticeable at all, if you're running a slow command for each line.) -Martin
