🚀 go-pugleaf

Is there any program to speed up disk accesses to two files concurrently, e.g.
sequentially reading from one file and writing to the other?
The run of the mill disk caches only keep the recently referenced blocks incore
while a more advanced disk cache could also prime the cache memory with blocks
that may "soon" be read, aka pre-read.
The cache may decide that a file is being read from the beginning, and that
subsequent block will be needed shortly.  Hence it may read these ahead of time
thereby making use of the favorable position of the read/write head on the disk
.
Such a cache would speed up programs like UUD and ARC, which don't do their own
buffering (compilers too?) and get stuck with TOS's non-buffered I/O, by
eliminating or at least reducing arm movement on the disk.
Please inform me of the existence of such caches, by direct mail if possible
since I am not subscribed to this newgroup anymore.  I only browse through the
logs when I need some info....