is giving me (on a laptop with several programs running, browsers with many tabs etc.):
$ ./cpuminer-opt-3.8.0-fast --benchmark -a lyra2z
********** cpuminer-opt 3.8.0 ***********
A CPU miner with multi algo support and optimized for CPUs
with AES_NI and AVX2 and SHA extensions.
BTC donation address: 12tdvfF7KmAsihBXQXynT6E6th2c2pByTT
CPU: Intel(R) Core(TM) i5-7440HQ CPU @ 2.80GHz.
SW built on Jan 25 2018 with GCC 7.2.0.
CPU features: SSE2 AES AVX AVX2.
SW features: SSE2 AES AVX AVX2.
Algo features: AVX AVX2.
Start mining with AVX2.
[2018-02-04 23:28:02] 4 miner threads started, using 'lyra2z' algorithm.
[2018-02-04 23:28:05] CPU #3: 65.53 kH, 23.36 kH/s
[2018-02-04 23:28:05] Total: 65.53 kH, 23.36 kH/s, 44C
[2018-02-04 23:28:05] CPU #0: 65.53 kH, 22.18 kH/s
[2018-02-04 23:28:05] CPU #1: 65.53 kH, 21.49 kH/s
[2018-02-04 23:28:06] CPU #2: 65.53 kH, 17.79 kH/s
[2018-02-04 23:28:07] CPU #2: 17.79 kH, 18.85 kH/s
[2018-02-04 23:28:07] CPU #0: 44.36 kH, 23.52 kH/s
[2018-02-04 23:28:07] CPU #3: 46.71 kH, 22.99 kH/s
[2018-02-04 23:28:07] Total: 174.40 kH, 86.85 kH/s, 44C
[2018-02-04 23:28:08] CPU #1: 42.98 kH, 19.48 kH/s
[2018-02-04 23:28:11] CPU #1: 77.90 kH, 21.00 kH/s
[2018-02-04 23:28:12] CPU #3: 114.96 kH, 23.65 kH/s
[2018-02-04 23:28:12] Total: 255.01 kH, 87.01 kH/s, 44C
[2018-02-04 23:28:12] CPU #0: 117.59 kH, 23.64 kH/s
[2018-02-04 23:28:12] CPU #1: 21.00 kH, 23.64 kH/s
[2018-02-04 23:28:13] CPU #2: 94.23 kH, 17.06 kH/s
[2018-02-04 23:28:17] CPU #2: 68.23 kH, 13.95 kH/s
[2018-02-04 23:28:19] CPU #0: 118.18 kH, 17.96 kH/s
[2018-02-04 23:28:19] CPU #1: 118.20 kH, 17.74 kH/s
[2018-02-04 23:28:19] CPU #3: 118.23 kH, 16.74 kH/s
[2018-02-04 23:28:19] Total: 422.84 kH, 66.38 kH/s, 44C
[2018-02-04 23:28:22] CPU #1: 53.22 kH, 17.02 kH/s
[2018-02-04 23:28:22] CPU #3: 50.21 kH, 17.05 kH/s
[2018-02-04 23:28:22] Total: 289.84 kH, 65.98 kH/s, 44C
[2018-02-04 23:28:23] CPU #2: 69.73 kH, 12.83 kH/s
[2018-02-04 23:28:24] CPU #0: 53.88 kH, 9815.55 H/s
[2018-02-04 23:28:25] CPU #0: 29.45 kH, 24.28 kH/s
[2018-02-04 23:28:26] CPU #3: 85.27 kH, 19.96 kH/s
[2018-02-04 23:28:26] Total: 237.65 kH, 74.09 kH/s, 44C
[2018-02-04 23:28:26] CPU #1: 85.12 kH, 19.31 kH/s
[2018-02-04 23:28:27] CPU #2: 51.32 kH, 12.96 kH/s
[2018-02-04 23:28:27] CPU #1: 19.31 kH, 20.62 kH/s
[2018-02-04 23:28:27] CPU #3: 19.96 kH, 20.04 kH/s
[2018-02-04 23:28:27] Total: 120.03 kH, 77.90 kH/s, 44C
[2018-02-04 23:28:28] CPU #0: 48.55 kH, 20.79 kH/s
[2018-02-04 23:28:30] CPU #2: 64.78 kH, 19.26 kH/s
[2018-02-04 23:28:32] CPU #0: 83.15 kH, 18.63 kH/s
[2018-02-04 23:28:33] CPU #3: 100.22 kH, 18.88 kH/s
[2018-02-04 23:28:33] Total: 267.46 kH, 77.39 kH/s, 44C
[2018-02-04 23:28:33] CPU #1: 103.12 kH, 19.11 kH/s
[2018-02-04 23:28:33] CPU #2: 38.51 kH, 12.85 kH/s
[2018-02-04 23:28:36] CPU #2: 51.38 kH, 21.52 kH/s
[2018-02-04 23:28:36] CPU #1: 76.42 kH, 21.01 kH/s
[2018-02-04 23:28:37] CPU #3: 75.50 kH, 19.31 kH/s
[2018-02-04 23:28:37] Total: 286.45 kH, 80.47 kH/s, 45C
[2018-02-04 23:28:37] CPU #2: 21.52 kH, 17.81 kH/s
[2018-02-04 23:28:37] CPU #0: 93.16 kH, 18.68 kH/s
[2018-02-04 23:28:37] CPU #1: 21.00 kH, 24.06 kH/s
[2018-02-04 23:28:41] CPU #3: 96.55 kH, 20.38 kH/s
[2018-02-04 23:28:41] Total: 232.24 kH, 80.93 kH/s, 45C
[2018-02-04 23:28:42] CPU #0: 93.37 kH, 21.32 kH/s
[2018-02-04 23:28:42] CPU #2: 89.06 kH, 16.71 kH/s
[2018-02-04 23:28:43] CPU #3: 20.38 kH, 14.62 kH/s
[2018-02-04 23:28:43] Total: 223.82 kH, 76.71 kH/s, 45C
[2018-02-04 23:28:43] CPU #1: 120.31 kH, 20.39 kH/s
[2018-02-04 23:28:46] CPU #3: 58.47 kH, 17.43 kH/s
[2018-02-04 23:28:46] Total: 361.22 kH, 75.85 kH/s, 45C
[2018-02-04 23:28:47] CPU #2: 83.54 kH, 18.76 kH/s
[2018-02-04 23:28:47] CPU #0: 106.60 kH, 21.05 kH/s
[2018-02-04 23:28:47] CPU #3: 17.43 kH, 24.00 kH/s
[2018-02-04 23:28:47] Total: 327.88 kH, 84.20 kH/s, 45C
[2018-02-04 23:28:48] CPU #1: 81.55 kH, 18.48 kH/s
[2018-02-04 23:28:51] CPU #1: 73.90 kH, 20.35 kH/s
[2018-02-04 23:28:51] CPU #0: 105.25 kH, 22.69 kH/s
[2018-02-04 23:28:52] CPU #3: 120.00 kH, 23.60 kH/s
[2018-02-04 23:28:52] Total: 382.69 kH, 85.39 kH/s, 44C