Hi,
I am working with the Intel Quad Gigabit ethernet board based on the 82546 v3,
Linux 2.6.18-194.el5, x86_64 and e1000-8.0.19 driver.
There are two MACs on the Intel 82546, each handles 2 Gb ports. I found out
that when pumping full-rate traffic at 64 bytes/packet, no flow control, each
MAC engine can only handle 1 Gb port without dropping packets.
Is this the limitation of the 82546 ? Is there any new chip from Intel (82580
?) that can handle quad Gb ports at 64 byte/packet without dropping packet ?
Thanks four your help,
Tung
> lspci
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev d9)
00:1f.0 ISA bridge: Intel Corporation 631xESB/632xESB/3100 Chipset LPC
Interface Controller (rev 09)
00:1f.1 IDE interface: Intel Corporation 631xESB/632xESB IDE Controller (rev
09)
00:1f.2 IDE interface: Intel Corporation 631xESB/632xESB/3100 Chipset SATA IDE
Controller (rev 09)
00:1f.3 SMBus: Intel Corporation 631xESB/632xESB/3100 Chipset SMBus Controller
(rev 09)
02:00.0 PCI bridge: Intel Corporation 6311ESB/6321ESB PCI Express Upstream
Port (rev 01)
02:00.3 PCI bridge: Intel Corporation 6311ESB/6321ESB PCI Express to PCI-X
Bridge (rev 01)
03:00.0 PCI bridge: Intel Corporation 6311ESB/6321ESB PCI Express Downstream
Port E1 (rev 01)
04:00.0 PCI bridge: NEC Corporation uPD720400 PCI Express - PCI/PCI-X Bridge
(rev 07)
04:00.1 PCI bridge: NEC Corporation uPD720400 PCI Express - PCI/PCI-X Bridge
(rev 07)
05:01.0 Ethernet controller: Intel Corporation 82546GB Gigabit Ethernet
Controller (rev 03)
05:01.1 Ethernet controller: Intel Corporation 82546GB Gigabit Ethernet
Controller (rev 03)
06:01.0 Ethernet controller: Intel Corporation 82546GB Gigabit Ethernet
Controller (rev 03)
06:01.1 Ethernet controller: Intel Corporation 82546GB Gigabit Ethernet
Controller (rev 03)
09:00.0 PCI bridge: PLX Technology, Inc. PEX 8533 32-lane, 6-port PCI Express
Switch (rev aa)
0a:01.0 PCI bridge: PLX Technology, Inc. PEX 8533 32-lane, 6-port PCI Express
Switch (rev aa)
0a:08.0 PCI bridge: PLX Technology, Inc. PEX 8533 32-lane, 6-port PCI Express
Switch (rev aa)
0a:09.0 PCI bridge: PLX Technology, Inc. PEX 8533 32-lane, 6-port PCI Express
Switch (rev aa)
0e:00.0 Ethernet controller: Intel Corporation 82575EB Gigabit Network
Connection (rev 02)
0e:00.1 Ethernet controller: Intel Corporation 82575EB Gigabit Network
Connection (rev 02)
0f:01.0 VGA compatible controller: ATI Technologies Inc ES1000 (rev 02)
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