Re: [9front] cfs, aan and network recommendations

[Steve Simon <steve@quintile.net>]

cfs could be modified, you could relax the rules…

for example if you know your files are readonly you only need to do a dirread, no subsequent checks.

if the path matches /*/bin/* assume the version is up to date (bin dires are fairly static)

you could keep a timestamp when the version was last checked if the file has not changed for (say) a week then its version only needs to be validated (say) once a day.

if you have recently fetched the versions on the path /sys/src/9/pc dont check them again until (say) 5 mins have elapsed.

the other approach suggested by nemo was to extend 9p with streaming apis - readfile and writefile. these would allow a complete file to be read with only 1 rtt rather than an rtt per path component, 1 for walk, open, and close, and 1 for each 8k of data.

all of these have disadvantages but in real use they could make life easier woth a remote fs.

-Steve