While fs-utils runs in well under 100ms on a modern PC, execution time for a simple ls can be 300ms on RPi. This is too slow for comfortable use. While this issue is not high-priority, I'm writing down some ideas which need to be evaluated.
if file system type is not specified, try to mount file systems in some sensible order of popularity
don't link in any file system modules at compile-time. instead, dlopen() them at runtime. this avoids unconditionally running a bunch of unnecessary module constructors with every invocation
extract probe routines from the drivers into standalone routines at least for the most common file systems. this avoids having to load a module before being able to determine if that driver can handle a given image
profile the various fsu utils -- a process which only does rump_init() with -lrumpvfs -lrump runs in ~70ms on the RPi. we're spending 230ms somewhere else.
While fs-utils runs in well under 100ms on a modern PC, execution time for a simple ls can be 300ms on RPi. This is too slow for comfortable use. While this issue is not high-priority, I'm writing down some ideas which need to be evaluated.