Rocky 8.8 NFS V4 Call response very slow

Hi Guys.

I’m using NFSv4 to mount a NetApp Volume on Rocky 8.8. Requests sent from the storage to Rocky 8.8 are incredibly fast, but the response time from Rocky 8.8 to the storage is very slow.

9              2024-01-15 16:00:28.649656        8.409304              10.1.48.230         671         10.1.48.242         2049       214         NFS                V4 Call (Reply In 10) GETATTR FH: 0x6cbe265a
10           2024-01-15 16:00:28.659207        0.009551              10.1.48.242         2049       10.1.48.230         671         354         NFS                V4 Reply (Call In 9) GETATTR

12           2024-01-15 16:00:38.716107        10.056890            10.1.48.230         671         10.1.48.242         2049       214         NFS                V4 Call (Reply In 13) GETATTR FH: 0x6cbe265a
13           2024-01-15 16:00:38.716262        0.000155              10.1.48.242         2049       10.1.48.230         671         234         NFS                V4 Reply (Call In 12) GETATTR

15           2024-01-15 16:00:44.367429        5.651160              10.1.48.230         671         10.1.48.242         2049       222         NFS                V4 Call (Reply In 16) ACCESS FH: 0x6cbe265a, [Check: RD LU MD XT DL]
16           2024-01-15 16:00:44.367626        0.000197              10.1.48.242         2049       10.1.48.230         671         242         NFS                V4 Reply (Call In 15) ACCESS, [Allowed: RD LU MD XT DL]

24           2024-01-15 16:00:55.721039        10.000261            10.1.48.230         671         10.1.48.242         2049       238         NFS                V4 Call (Reply In 25) READDIR FH: 0x6cbe265a
25           2024-01-15 16:00:55.721393        0.000354              10.1.48.242         2049       10.1.48.230         671         4578       NFS                V4 Reply (Call In 24) READDIR

30           2024-01-15 16:01:00.149444        2.776703              10.1.48.230         671         10.1.48.242         2049       222         NFS                V4 Call (Reply In 31) ACCESS FH: 0xe48909ca, [Check: RD LU MD XT DL]
31           2024-01-15 16:01:00.149687        0.000243              10.1.48.242         2049       10.1.48.230         671         242         NFS                V4 Reply (Call In 30) ACCESS, [Allowed: RD LU MD XT DL]

What should I check?
I don’t know what to do.