(pprof) top20
Showing nodes accounting for 23.29s, 60.90% of 38.24s total
Dropped 420 nodes (cum <= 0.19s)
Showing top 20 nodes out of 168
      flat  flat%   sum%        cum   cum%
    12.04s 31.49% 31.49%     12.72s 33.26%  syscall.Syscall
     2.72s  7.11% 38.60%      2.72s  7.11%  runtime.futex
     2.32s  6.07% 44.67%      2.32s  6.07%  runtime.epollwait
     1.07s  2.80% 47.46%      2.08s  5.44%  runtime.mallocgc
     0.89s  2.33% 49.79%      0.89s  2.33%  runtime.usleep
     0.46s  1.20% 50.99%      0.46s  1.20%  runtime.heapBitsSetType
     0.46s  1.20% 52.20%      0.89s  2.33%  runtime.mapassign1
     0.40s  1.05% 53.24%      0.40s  1.05%  runtime._ExternalCode
     0.34s  0.89% 54.13%      1.11s  2.90%  runtime.selectgoImpl
     0.31s  0.81% 54.94%      0.32s  0.84%  runtime.mapiternext
     0.31s  0.81% 55.75%      0.31s  0.81%  runtime.memmove
     0.29s  0.76% 56.51%      0.29s  0.76%  runtime/internal/atomic.Xchg
     0.26s  0.68% 57.19%      0.52s  1.36%  runtime.deferreturn
     0.23s   0.6% 57.79%      1.52s  3.97%  runtime.newobject
     0.22s  0.58% 58.37%      0.22s  0.58%  runtime.procyield
     0.21s  0.55% 58.92%      0.66s  1.73%  runtime.lock
     0.21s  0.55% 59.47%      0.21s  0.55%  runtime.memeqbody
     0.19s   0.5% 59.96%      0.20s  0.52%  runtime.freedefer
     0.19s   0.5% 60.46%      0.21s  0.55%  runtime.mapaccess2_faststr
     0.17s  0.44% 60.90%      0.20s  0.52%  runtime.getitab
(pprof)