On 1/1/20 1:15 AM, Sergiu Hlihor wrote: > If you rely on OS, then > you are at the mercy of whatever read ahead configuration you have.
Right, and whatever changes you make to the OS and its read-ahead configuration will work for all applications, not just for 'grep'. So, change the OS to do that. There shouldn't be a need to change 'grep' in particular (or 'cp' in particular, or 'awk' in particular, etc.). > The issue of large > block sizes for IO operations is widespread across all tools from Linux, > like rsync or cp and its only getting worse Quite right. And it would be painful to have to modify all those tools, and to maintain those modifications. So modify the OS instead. Scheduling read-ahead is really the OS's job anyway.
