There are multiple implementations, the one often found on linux is glibc, you can find the source code for that online. printf is going to be a small wrapper for vfprintf though, so that is where you will probably find what you are looking for
Every time I decide to upgrade my damn computer something like this happens, come on i7-5820K, just a little longer, the prices will drop any time now...
I'm need to save high speed radio samples, think a single super high speed ~100MHz audio wav recording, so not really compressible and can use large block IO. Thankfully it's about as close to a synthetic write test as you could get. I ended up getting the Samsung
I normally would get a cheap P3+, but those SSDs have terrible sustained write performance, I needed the sustained speed here, ended up getting the samsung
y=1/x where x<0 cat