# Write Performance Jitter Case Study Background

+ Cluster configuration:
  + Version v5.1.0
  + Configure the TiKV node to AWS i3.xlarge
    + 4 core
    + 32G RAM
    + Gigabit network card
    + 1TB NVMe
+ Observation: Insert write performance jitter at around 9:30am, up to about 1s, but the use of cluster resources CPU/disk/NIC did not reach the bottleneck
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