It seems it's not:This is a problem in Linux with scheduling I/O and many cores. One process gets all the bandwidth and others can't get a word in edgewise.
Even SFQ allowed this and CFQ moved even further. However, I don't expect from you to know this (if you even don't understand kernel versioning...). You and your friend already proved this in another thread.Fair queuing would allow many processes demanding large levels of disk IO to each get fair access to the device, preventing any one process from denying the others.
Have a nice trolling there: