Hi,
When using a conventional PCI TP-Link TG-3269 Rev 3.0/3.3 under Bookworm, the read and write performance via SMB to/from a Windows 10 machine is low, at about 100 megabits/second. The link is indeed negotiated to Gigabit speed, but I can see the lights on the network switch only blink intermittently and there are pauses in between the blinks.
Performance under iperf and FTP transfers are at the correct speed of ~650 megabits/second (PCI bus overhead means it is lower than true Gigabit) with the exact same hardware config on both computers. I even switched the Windows 10 machine's NIC to an Intel i210-T1 and the issue persists.
If I change the Debian machine's NIC to the RTL8111E, the performance under SMB is also as it should be (~950 megabits/second thanks to it being PCIe). So this seems like an issue with the interplay between the PCI NIC hardware and the SMB stack.
I have tried with 2 different NICs of the same model so I doubt this is simply a defective piece of hardware.
I hvae not immediately spotted anything unusual in Wireshark or irqtop but I can run those again if needed.
System specs:
AMD Phenom II X6 1090T
Stock AVC Phenom II/FX 125W cooler
ASRock 980DE3/U3S3 rev G/A 1.03 with BIOS 1.60N
32GB DDR3-1600 @1333
Gigabyte RX 590
EVGA 430W 80+ White PSU
Seagate ST2000DM001 2TB 7200RPM CMR HDD
GA-WB1733D-I PCIe WLAN NIC (Intel AC 9260)
Debian 12 Bookworm
When using a conventional PCI TP-Link TG-3269 Rev 3.0/3.3 under Bookworm, the read and write performance via SMB to/from a Windows 10 machine is low, at about 100 megabits/second. The link is indeed negotiated to Gigabit speed, but I can see the lights on the network switch only blink intermittently and there are pauses in between the blinks.
Performance under iperf and FTP transfers are at the correct speed of ~650 megabits/second (PCI bus overhead means it is lower than true Gigabit) with the exact same hardware config on both computers. I even switched the Windows 10 machine's NIC to an Intel i210-T1 and the issue persists.
If I change the Debian machine's NIC to the RTL8111E, the performance under SMB is also as it should be (~950 megabits/second thanks to it being PCIe). So this seems like an issue with the interplay between the PCI NIC hardware and the SMB stack.
I have tried with 2 different NICs of the same model so I doubt this is simply a defective piece of hardware.
I hvae not immediately spotted anything unusual in Wireshark or irqtop but I can run those again if needed.
System specs:
AMD Phenom II X6 1090T
Stock AVC Phenom II/FX 125W cooler
ASRock 980DE3/U3S3 rev G/A 1.03 with BIOS 1.60N
32GB DDR3-1600 @1333
Gigabyte RX 590
EVGA 430W 80+ White PSU
Seagate ST2000DM001 2TB 7200RPM CMR HDD
GA-WB1733D-I PCIe WLAN NIC (Intel AC 9260)
Debian 12 Bookworm
Statistics: Posted by EtonBiscuit — 2024-10-09 06:55 — Replies 1 — Views 50