伺服器一直在為無磁碟客戶端執行 iSCSI 服務，我注意到伺服器閘道的連線（網際網路連線或假閘道）使 iSCSI 效能變差。
有沒有人經歷過這種情況或可以提供任何調試建議？
僅供參考：即使連接了預設網關，「fio」測試的結果也正常。所以我認為問題出在 iSCSI。
Environment:
CentOS 7.7.1908 / Kernel 3.10.0-1062.18.1.el7.x86_64
ZFS version zfs-0.8.3-1 / zfs-kmod-0.8.3-1
targetcli version 2.1.fb46
Server NIC: Intel 4 ports 1Gbps, 4 ports trunk
Switch: 1Gbps 48 ports, 4 ports trunk
zpool iostat when server's default gateway is connected. (attached cable)
capacity operations bandwidth
pool alloc free read write read write
---------- ----- ----- ----- ----- ----- -----
zp1 177G 751G 470 85 56.8M 8.82M
zp1 177G 751G 684 34 83.4M 3.12M
zp1 177G 751G 414 979 49.6M 90.7M
zpool iostat when server's default gateway is not connected. (detached cable)
capacity operations bandwidth
pool alloc free read write read write
---------- ----- ----- ----- ----- ----- -----
zp1 176G 752G 2.19K 445 276M 3.45M
zp1 176G 752G 2.50K 428 314M 4.21M
zp1 176G 752G 1.92K 3 243M 60.0K