The performance of JD warehouse pickers is usually evaluated based on the following aspects:

1. Picking speed: The picking speed of the picker is one of the important indicators for evaluating performance, usually measured by the number of picks per hour.

2. Picking accuracy: The picking accuracy of the picker is also one of the important indicators for evaluating performance, usually measured by the picking error rate.

3. Work efficiency: The work efficiency of the picker is also one of the important indicators for evaluating performance, usually measured by the amount of work completed per unit time.

4. Work attitude: The work attitude of the picker is also one of the important indicators for evaluating performance, usually measured by work enthusiasm, responsibility, teamwork and other aspects.

The specific performance evaluation standards may vary due to different warehouse management requirements, and the above content is for reference only.