Всем пятницы!
Сервачок на платформе Supermicro. Сетевуха на чипе Intel 82576 (Dual port) интегрированная. Установлена чистенькая Ubuntu Server 12.04.1 (x64). Все обновления конечно установлены. Наблюдается следующая проблема:
$ ifconfig
eth0 Link encap:Ethernet HWaddr 00:25:90:71:da:5e
inet addr:10.106.0.11 Bcast:10.106.255.255 Mask:255.255.0.0
inet6 addr: fe80::225:90ff:fe71:da5e/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1862827 errors:0 dropped:8421 overruns:1 frame:0
TX packets:17187 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:153198940 (153.1 MB) TX bytes:3128693 (3.1 MB)
Память:fafe0000-fb000000
lo Link encap:Локальная петля (Loopback)
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:119 errors:0 dropped:0 overruns:0 frame:0
TX packets:119 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:24476 (24.4 KB) TX bytes:24476 (24.4 KB)
Счетчик RX dropped медленно, но верно растет. Патч-корды менял, пробовал разные - и фабричные и самопальные. Свитчи менял - HP, Cisco, DLink, 3Com... Компилил дравер из исходников. Все равно счетчик RX Dropped не равен 0 и растет. Установил чистенькую CentOS 6.3 - и о чудо! Счетчик RX Dropped = 0 и не растет.
Собственно вопрос: кто виноват и что делать? Виновато ядро 3.2.0-31-generic? Убунтий - корпоративная политика, переехать на другой дистрибутив не могу.
Вывод lscpi -v
05:00.0 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01)
Subsystem: Super Micro Computer Inc Device 10c9
Flags: bus master, fast devsel, latency 0, IRQ 16
Memory at fafe0000 (32-bit, non-prefetchable) [size=128K]
Memory at fafc0000 (32-bit, non-prefetchable) [size=128K]
I/O ports at ef80 [size=32]
Memory at faf9c000 (32-bit, non-prefetchable) [size=16K]
Expansion ROM at fafa0000 [disabled] [size=128K]
Capabilities: [40] Power Management version 3
Capabilities: [50] MSI: Enable- Count=1/1 Maskable+ 64bit+
Capabilities: [70] MSI-X: Enable+ Count=10 Masked-
Capabilities: [a0] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [140] Device Serial Number 00-25-90-ff-ff-71-da-5e
Capabilities: [150] Alternative Routing-ID Interpretation (ARI)
Capabilities: [160] Single Root I/O Virtualization (SR-IOV)
Kernel driver in use: igb
Kernel modules: igb
05:00.1 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01)
Subsystem: Super Micro Computer Inc Device 10c9
Flags: bus master, fast devsel, latency 0, IRQ 17
Memory at faf60000 (32-bit, non-prefetchable) [size=128K]
Memory at faf40000 (32-bit, non-prefetchable) [size=128K]
I/O ports at ef40 [size=32]
Memory at faf98000 (32-bit, non-prefetchable) [size=16K]
Expansion ROM at faf20000 [disabled] [size=128K]
Capabilities: [40] Power Management version 3
Capabilities: [50] MSI: Enable- Count=1/1 Maskable+ 64bit+
Capabilities: [70] MSI-X: Enable+ Count=10 Masked-
Capabilities: [a0] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [140] Device Serial Number 00-25-90-ff-ff-71-da-5e
Capabilities: [150] Alternative Routing-ID Interpretation (ARI)
Capabilities: [160] Single Root I/O Virtualization (SR-IOV)
Kernel driver in use: igb
Kernel modules: igb
