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Message-ID: <20230423193629.7eaf63f6@hermes.local>
Date: Sun, 23 Apr 2023 19:36:29 -0700
From: Stephen Hemminger <stephen@...workplumber.org>
To: hkallweit1@...il.com, nic_swsd@...ltek.com
Cc: netdev@...r.kernel.org
Subject: Fw: [Bug 217362] New: Low performance on Realtek RTL8125 2.5Gb NIC
using r8169 driver
Begin forwarded message:
Date: Sun, 23 Apr 2023 15:36:07 +0000
From: bugzilla-daemon@...nel.org
To: stephen@...workplumber.org
Subject: [Bug 217362] New: Low performance on Realtek RTL8125 2.5Gb NIC using r8169 driver
https://bugzilla.kernel.org/show_bug.cgi?id=217362
Bug ID: 217362
Summary: Low performance on Realtek RTL8125 2.5Gb NIC using
r8169 driver
Product: Networking
Version: 2.5
Hardware: All
OS: Linux
Status: NEW
Severity: normal
Priority: P3
Component: Other
Assignee: stephen@...workplumber.org
Reporter: jon780@...il.com
Regression: No
Poor performance on receive-side only when using RTL8125 NIC with the in-tree
r8169 driver. The performance problems occur only in the receive direction. If
I reverse the sender I can get the full 2.5Gb (2.35Gb+overhead) over the link.
From my client if I run iperf3 to other hosts on the same switch I see 2.5Gb in
both directions. The Realtek maintained driver (r8125) supposedly fixes the
issue from what I've read but unfortunately I'm unable to compile it on my OS
(Rocky 8.7).
$ iperf3 -c server
[ 5] local 10.200.16.20 port 58358 connected to 10.200.16.40 port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 176 MBytes 1.47 Gbits/sec 1113 41.0 KBytes
[ 5] 1.00-2.00 sec 169 MBytes 1.42 Gbits/sec 1070 46.7 KBytes
[ 5] 2.00-3.00 sec 176 MBytes 1.47 Gbits/sec 1287 49.5 KBytes
[ 5] 3.00-4.00 sec 172 MBytes 1.44 Gbits/sec 1121 35.4 KBytes
[ 5] 4.00-5.00 sec 176 MBytes 1.47 Gbits/sec 1105 33.9 KBytes
[ 5] 5.00-6.00 sec 167 MBytes 1.40 Gbits/sec 1100 39.6 KBytes
[ 5] 6.00-7.00 sec 175 MBytes 1.47 Gbits/sec 1134 46.7 KBytes
[ 5] 7.00-8.00 sec 173 MBytes 1.45 Gbits/sec 1147 33.9 KBytes
[ 5] 8.00-9.00 sec 167 MBytes 1.40 Gbits/sec 966 46.7 KBytes
[ 5] 9.00-10.00 sec 177 MBytes 1.48 Gbits/sec 1164 41.0 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 1.69 GBytes 1.45 Gbits/sec 11207 sender
[ 5] 0.00-10.04 sec 1.69 GBytes 1.44 Gbits/sec receiver
And now we just reverse the sender:
$ iperf3 -Rc server
[ 5] local 10.200.16.20 port 41788 connected to 10.200.16.40 port 5201
[ ID] Interval Transfer Bitrate
[ 5] 0.00-1.00 sec 277 MBytes 2.32 Gbits/sec
[ 5] 1.00-2.00 sec 279 MBytes 2.34 Gbits/sec
[ 5] 2.00-3.00 sec 280 MBytes 2.35 Gbits/sec
[ 5] 3.00-4.00 sec 280 MBytes 2.35 Gbits/sec
[ 5] 4.00-5.00 sec 279 MBytes 2.34 Gbits/sec
[ 5] 5.00-6.00 sec 280 MBytes 2.35 Gbits/sec
[ 5] 6.00-7.00 sec 279 MBytes 2.34 Gbits/sec
[ 5] 7.00-8.00 sec 279 MBytes 2.34 Gbits/sec
[ 5] 8.00-9.00 sec 278 MBytes 2.33 Gbits/sec
[ 5] 9.00-10.00 sec 280 MBytes 2.35 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.04 sec 2.73 GBytes 2.33 Gbits/sec 4 sender
[ 5] 0.00-10.00 sec 2.73 GBytes 2.34 Gbits/sec receiver
Kernel version:
Linux ultrix 4.18.0-425.19.2.el8_7.x86_64 #1 SMP Tue Apr 4 22:38:11 UTC 2023
x86_64 x86_64 x86_64 GNU/Linux
modinfo on r8169:
filename:
/lib/modules/4.18.0-425.19.2.el8_7.x86_64/kernel/drivers/net/ethernet/realtek/r8169.ko.xz
firmware: rtl_nic/rtl8125b-2.fw
firmware: rtl_nic/rtl8125a-3.fw
firmware: rtl_nic/rtl8107e-2.fw
firmware: rtl_nic/rtl8107e-1.fw
firmware: rtl_nic/rtl8168fp-3.fw
firmware: rtl_nic/rtl8168h-2.fw
firmware: rtl_nic/rtl8168h-1.fw
firmware: rtl_nic/rtl8168g-3.fw
firmware: rtl_nic/rtl8168g-2.fw
firmware: rtl_nic/rtl8106e-2.fw
firmware: rtl_nic/rtl8106e-1.fw
firmware: rtl_nic/rtl8411-2.fw
firmware: rtl_nic/rtl8411-1.fw
firmware: rtl_nic/rtl8402-1.fw
firmware: rtl_nic/rtl8168f-2.fw
firmware: rtl_nic/rtl8168f-1.fw
firmware: rtl_nic/rtl8105e-1.fw
firmware: rtl_nic/rtl8168e-3.fw
firmware: rtl_nic/rtl8168e-2.fw
firmware: rtl_nic/rtl8168e-1.fw
firmware: rtl_nic/rtl8168d-2.fw
firmware: rtl_nic/rtl8168d-1.fw
license: GPL
softdep: pre: realtek
description: RealTek RTL-8169 Gigabit Ethernet driver
author: Realtek and the Linux r8169 crew <netdev@...r.kernel.org>
rhelversion: 8.7
srcversion: 97902AC339128804EACE041
alias: pci:v000010ECd00003000sv*sd*bc*sc*i*
alias: pci:v000010ECd00008125sv*sd*bc*sc*i*
alias: pci:v00000001d00008168sv*sd00002410bc*sc*i*
alias: pci:v00001737d00001032sv*sd00000024bc*sc*i*
alias: pci:v000016ECd00000116sv*sd*bc*sc*i*
alias: pci:v00001259d0000C107sv*sd*bc*sc*i*
alias: pci:v00001186d00004302sv*sd*bc*sc*i*
alias: pci:v00001186d00004300sv*sd*bc*sc*i*
alias: pci:v00001186d00004300sv00001186sd00004B10bc*sc*i*
alias: pci:v000010ECd00008169sv*sd*bc*sc*i*
alias: pci:v000010FFd00008168sv*sd*bc*sc*i*
alias: pci:v000010ECd00008168sv*sd*bc*sc*i*
alias: pci:v000010ECd00008167sv*sd*bc*sc*i*
alias: pci:v000010ECd00008162sv*sd*bc*sc*i*
alias: pci:v000010ECd00008161sv*sd*bc*sc*i*
alias: pci:v000010ECd00008136sv*sd*bc*sc*i*
alias: pci:v000010ECd00008129sv*sd*bc*sc*i*
alias: pci:v000010ECd00002600sv*sd*bc*sc*i*
alias: pci:v000010ECd00002502sv*sd*bc*sc*i*
depends:
intree: Y
name: r8169
vermagic: 4.18.0-425.19.2.el8_7.x86_64 SMP mod_unload modversions
sig_id: PKCS#7
signer: Rocky kernel signing key
sig_key: 31:6B:5A:38:DC:7F:D6:69:81:FF:0E:A0:F3:A0:40:1F:9E:9D:02:27
sig_hashalgo: sha256
signature: 97:97:FA:A9:56:9A:59:3A:E4:FB:BC:02:09:7A:AE:6A:0D:82:95:2A:
31:09:9C:78:AD:62:54:D2:73:82:8E:C0:D6:7A:D8:A5:16:F4:3B:FF:
A0:DB:61:04:9D:DC:3C:CD:61:E0:92:F9:81:FC:87:EF:C0:BC:BA:A7:
60:24:59:4A:C5:B5:2F:51:F5:97:C2:18:18:18:42:5A:E1:90:5F:78:
14:75:C8:67:D0:3D:03:93:E5:98:D8:48:B2:8E:64:B4:73:DA:3C:A5:
6D:7D:24:79:2C:76:34:21:3F:35:5D:E8:93:5F:6B:FD:13:13:6F:9C:
C3:F6:F2:0A:25:6C:1D:14:FF:23:84:87:94:01:F9:3F:C9:65:6B:4F:
F3:44:65:F7:21:03:D9:9C:5F:60:A5:3B:2D:91:E3:BE:88:49:3B:2A:
97:41:81:6C:87:0A:47:C3:E9:46:FD:15:85:8E:07:A8:6C:5E:69:45:
E9:A1:4B:68:89:04:73:00:35:61:85:7C:A2:5B:7F:FC:C6:DB:7B:A2:
8B:E6:36:1C:09:7A:02:8E:C5:72:5D:1C:F4:78:A9:C7:42:84:0B:E1:
B6:5C:A4:B5:F8:AB:1F:FA:1B:51:E9:A3:78:17:90:BC:5B:03:CA:AC:
C5:34:BB:4C:EE:CE:75:BE:15:F2:C6:C6:8C:6F:A8:5B:E0:38:7F:6F:
9F:18:63:5C:F0:2D:50:26:BD:DD:A2:D3:AF:C0:CA:64:82:6D:F7:39:
AD:5A:C3:87:88:57:8F:F6:28:15:2F:F4:86:85:F7:71:BA:E8:9E:6B:
DB:9C:10:B1:5D:90:77:47:27:DD:F4:68:C8:68:E3:60:BE:C4:FC:CD:
B2:C0:B4:B0:44:F4:1B:37:6E:37:55:39:17:EE:00:AE:5A:51:8F:02:
09:AF:A7:59:DF:E1:E6:09:A0:50:6D:51:41:11:E0:9D:D9:68:4A:43:
B3:8A:4E:00:80:A7:4C:B4:7C:7B:00:1E:F1:AA:2D:F6:1D:DE:B7:07:
F6:50:6A:AF
lshw -C network output:
*-network
description: Ethernet interface
product: RTL8125 2.5GbE Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@...0:02:00.0
logical name: enp2s0
version: 05
serial: 78:72:64:40:6b:53
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet
physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169
driverversion=4.18.0-425.19.2.el8_7.x86_64 duplex=full
firmware=rtl8125b-2_0.0.2 07/13/20 ip=10.200.16.43 latency=0 link=yes
multicast=yes port=MII
resources: irq:18 ioport:3000(size=256) memory:7ff00000-7ff0ffff
memory:7ff10000-7ff13fff
*-network
description: Ethernet interface
product: RTL8125 2.5GbE Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@...0:03:00.0
logical name: enp3s0
version: 05
serial: 78:72:64:40:6b:54
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet
physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169
driverversion=4.18.0-425.19.2.el8_7.x86_64 firmware=rtl8125b-2_0.0.2 07/13/20
latency=0 link=no multicast=yes port=MII
resources: irq:19 ioport:2000(size=256) memory:7fe00000-7fe0ffff
memory:7fe10000-7fe13fff
ethtool output:
Settings for enp2s0:
Supported ports: [ TP MII ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
2500baseT/Full
Supported pause frame use: Symmetric Receive-only
Supports auto-negotiation: Yes
Supported FEC modes: Not reported
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
2500baseT/Full
Advertised pause frame use: Symmetric Receive-only
Advertised auto-negotiation: Yes
Advertised FEC modes: Not reported
Link partner advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
10000baseT/Full
2500baseT/Full
5000baseT/Full
Link partner advertised pause frame use: No
Link partner advertised auto-negotiation: Yes
Link partner advertised FEC modes: Not reported
Speed: 2500Mb/s
Duplex: Full
Auto-negotiation: on
master-slave cfg: preferred slave
master-slave status: slave
Port: MII
PHYAD: 0
Transceiver: external
Supports Wake-on: pumbg
Wake-on: d
Link detected: yes
--
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