Thomas Kunz
Systems and Computer Engineering
12
File Systems: Coda
nHoarding
–user can
pre-determine a file list with
priorities
–contents of
the cache determined by the
list and LRU strategy (Last Recently
Used)
–explicit
pre-fetching possible
–periodic
updating
nComparison of files
–asynchronous,
background
–system
weighs speed of updating against
minimization of network traffic
nCache misses
–modeling of
user patience: how long can a
user wait for data without an
error message?
–function of
file size and bandwidth
disconnection
hoarding
write
disconnected
emulating
disconnection
connection
strong
connection
weak
connection
nStates of a client