Locality and caching in parallel/distributed file systems
hahn at physics.mcmaster.ca
Tue Dec 3 08:37:52 PST 2002
> appreciate any feedback that people can give. Please forgive my ignorance
> if I turn out to have reinvented the edsel.
well, much of what you describe was in AFS/Coda/Intermezzo. some of it
is indeed Edsel-ish, though it's interesting to look at machine balance
then versus now:
diskSz diskSp netSp memSz memSP CPU
then 30MB 1MBps 1MBps 1MB 20MBps 4mips
now 60GB 30MBps 100MBps 1GB 2GBps 4gips
ratio 2000 30 100 1000 100 1000
anyway, the vast increase in local disk/mem/cpu capacity has, unsurprisingly,
made people want to make systems more peer-to-peer. afaikt, there hasn't
really been an effective/thorough/general-purpose p2p filesystem, though.
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