Find the slowest stage

  • Build
  • Metal 06
  • Node

Difficulty 3 of 5

A file server must send an 8 MiB file to a client within 1 ms. The file goes from the NVMe drive into the page cache, over PCIe to the NIC, and over the cable. The stages work at the same time. A faster NIC or drive costs more. Meet the limit within 120 USD/mo.

Play level

TCPDRAMCPU coreNIC25GNVMe driveGen4
The board at the start of the level
One server boardDrag or use arrow keys to change the load

280 req/s · CPU 70% · mean 22 ms

Goals and limits

Completion time
under 1 ms
Monthly cost
under 120 USD/mo

Concepts

How players did

Player results load from the server.

All levels