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Seek timesSeek timesPosted Jun 18, 2009 14:10 UTC (Thu) by tajyrink (subscriber, #2750)Parent article: What ever happened to chunkfs?
I'd say the (random) seek time estimate of 1.2x speedup is overestimating. During the last ca. 15 years, I'd say the whole increase has been not much above 0% in the normal case (7200 rpm hard drives), with the possible exception of later command queueing techniques speeding up even random seeks a bit. I remember 850MB Quantum Fireballs having pretty speedy seek times.
So one way of approximating is that during 1994-2009:
And I think application developers still don't generally understand that anything seeking the hard drive is killing performance. Just look at the login times of popular desktop environments.
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Seek times Posted Jun 18, 2009 17:43 UTC (Thu) by vaurora (guest, #38407) [Link]
I'm just quoting Seagate's roadmap on the change in seek time. :) Not going to argue with them.
A couple years back a friend resurrected an ancient Amiga (1993 era) and ran the included disk performance tests. Seek times were less than twice that of the very latest modern laptop hard drive. You can read the numbers, but having the actual hardware there in front of me made it truly sink in.
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