Tracking Technology Performance Trends•4 technologies–Disks –Memory –Network –Processors•Compare ~1980 Archaic(Nostalgic) vs (Nostalgic) vs. ~2000 Modern(Newfangled/innovative/novel)–Performance Milestones in each technology•Compare for Bandwidth vs Latency Bandwidth vs. Latency improvementsin performance over time•Bandwidth: number of events per unit timeEM bit / d tk M b t/ d f–E.g., M bits / second over network, M bytes / second from disk•Latency: elapsed time for a single event–E goneway network delay in microseconds S. ZiavrasSome material is adapted from D. Culler & D. Patterson (UCB)E.g., one-way network delay in microseconds, average disk access time in milliseconds
Disks: Archaic vs. Modern•Seagate 373453, 2003•15000 RPM (4X)•CDC Wren I, 1983•3600 RPM•73.4 GBytes (2500X)•Tracks/Inch: 64000(80X)•0.03 GBytes capacity•Tracks/Inch: 800•Bits/Inch: 533,000(60X)•Four 2.5” platters (in 3 5” form factor)•Bits/Inch: 9550•Three 5.25” platters(in 3.5 form factor)•Bandwidth: 86 MBytes/sec (140X)•Bandwidth: 0.6 MBytes/sec•Latency: 5.7 ms (8X)•Cache: 8 MBytes•Latency: 48.3 ms•Cache: noneS. ZiavrasSome material is adapted from D. Culler & D. Patterson (UCB)
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