Well, it shouldn't be slower than "Read 1,000,000 bytes sequentially from memory" (741ns) which in turn shouldn't be slower than "Read 1,000,000 bytes sequentially from disk" (359 us).
That said, all those numbers feel a bit off by 1.5-2 orders of magnitude -- that disk read speed translates to about 3 GB/s which is well outside the range of what HDDs can achieve.
// NIC bandwidth doubles every 2 years
// [source: http://ampcamp.berkeley.edu/wp-content/uploads/2012/06/Ion-stoica-amp-camp-21012-warehouse-scale-computing-intro-final.pdf]
// TODO: should really be a step function
// 1Gb/s = 125MB/s = 125*10^6 B/s in 2003
which means that in 2026 we'll have seen 11 doublings since gigabit speeds in 2003, so we'll all have > terabit speeds available to us.
alt Hacker News
Well, it shouldn't be slower than "Read 1,000,000 bytes sequentially from memory" (741ns) which in turn shouldn't be slower than "Read 1,000,000 bytes sequentially from disk" (359 us).
That said, all those numbers feel a bit off by 1.5-2 orders of magnitude -- that disk read speed translates to about 3 GB/s which is well outside the range of what HDDs can achieve.
https://brenocon.com/dean_perf.html indicates the original set of numbers were more like 10us, 250us, and 30ms.
And it links to https://github.com/colin-scott/interactive_latencies which seems like it extrapolates progress from 14 years ago:
which means that in 2026 we'll have seen 11 doublings since gigabit speeds in 2003, so we'll all have > terabit speeds available to us.