Working set per core

  • Tune
  • Metal 04
  • Chip

Difficulty 2 of 5

A 256 MiB lookup table answers random 64-byte reads. Split it over more cores so that each core reads a smaller share. Each core costs 20 USD/mo. Keep the p99 of one read under 20 ns, within 1,500 USD/mo.

Play level

HostCPU core256M
The board at the start of the level
Where a read finds its dataDrag or use arrow keys to pick where the data lives

NVMe drive · 75 µs per read

Goals and limits

p99 latency
under 20 ns
Monthly cost
under 1,500 USD/mo

Concepts

How players did

Player results load from the server.

All levels