Thanks for sending an issue! Please fill in the following template to help quickly solve your problem.

Describe the current behavior / 问题描述 (Mandatory / 必填)

metadata读取太靠前，无法使用preload进行性能优化

Environment / 环境信息 (Mandatory / 必填)

Ascend950

Steps to reproduce the issue / 重现步骤 (Mandatory / 必填)

按步骤复现

Describe the expected behavior / 预期结果 (Mandatory / 必填)

性能优化

Related log / screenshot / 日志 / 截图 (Mandatory / 必填)

无

Special notes for this issue/备注 (Optional / 选填)