原始文献 / 论坛帖 / Re: How fast do the fastest computers generate bitcoins?
Re: How fast do the fastest computers generate bitcoins?
Bitcointalk · 2010-06-22 04:35:26 UTC
我注意到哈希性能在不同 CPU 之间的差异没有想象中大。跟老 CPU 比，新 CPU 在哈希上的提速，不如在通用基准测试上明显。
我猜近年的 CPU 优化都集中在 I/O、分支预测这些地方了。大多数程序都是一堆内存访问、比较和分支，很少有长时间吭哧吭哧纯算数的。
最新 SVN 版有 khash/s 显示。每个处理器 400 khash/s 左右是典型值。
英文原文
I've noticed that hashing performance doesn't vary as much between CPUs as you'd expect. Compared to an old CPU, a newer CPU doesn't show as much of a speedup at hashing as it does on general benchmarks.
I guess recent CPU optimizations must have concentrated on things like I/O and branch prediction. Most programs are a bunch of memory access, comparisons and branching, they rarely get down to cranking away at maths for very long.
The latest SVN version has a khash/s display. Around 400 khash/s per processor is typical.