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Testing on old hardware is flawed

Testing on old hardware is flawed

Posted Aug 26, 2004 21:22 UTC (Thu) by hensema (guest, #980)
In reply to: Testing on old hardware is flawed by NAR
Parent article: Looking at reiser4

No, on old machines the disk is actually relatively fast. In absolute figures the disk is slow, maybe 10 MB/sec or slightly less. But current processors are more than 10-20 times faster while disks are only 4-5 times faster. And that's measured by throughput. Seeks are barely any faster than 4 years ago (they are mostly limited by the rotational speed of the platters).


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Testing on old hardware is flawed

Posted Sep 3, 2004 10:19 UTC (Fri) by gc (guest, #24112) [Link]

Recent CPUs have very high frequencies but the counterpart is that they need more clock cycles to perform the same instructions. If you compare a P4-3GHz with a P3-300MHz, the clock ticks needed to execute a typical series of instructions is 3 to 4 times larger, hence the CPU power is overally "only" 3 times higher. I think your figures concerning the increase of CPU power are wrong.


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