# 计算圆周率后一万位所需要的时间

```
time echo "scale=10000; 4*a(1)" | bc -l -q
```

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以下是成绩
树莓派 3B 博通 BCM2837B0
bc -l -q 475.68s user 0.00s system 99% cpu 7:55.68 total

树莓派 4B 博通 BCM2711
bc -l -q 221.00s user 0.00s system 99% cpu 3:41.88 total

腾讯云 E5-26xx v4
bc -l -q 127.81s user 0.05s system 98% cpu 2:09.55 total
bc -l -q 127.35s user 0.05s system 98% cpu 2:09.15 total

机房 Gold 6144
bc -l -q 84.19s user 0.34s system 99% cpu 1:24.19 total

macOS 7820HQ
bc -l -q 111.12s user 0.34s system 99% cpu 1:51.89 total
bc -l -q 111.44s user 0.38s system 99% cpu 1:52.26 total

Ubuntu 2600x
bc -l -q 94.46s user 0.01s system 99% cpu 1:34.50 total
bc -l -q 95.92s user 0.00s system 99% cpu 1:35.96 total

Ubuntu 3700x
bc -l -q 84.94s user 0.00s system 99% cpu 1:24.95 total
bc -l -q 83.09s user 0.01s system 99% cpu 1:23.11 total