Lack of performance re0 (RTL8111/8168B)

[Vladislav V. Prodan]

14.01.2012 0:15, YongHyeon PYUN wrote:
> On Fri, Jan 13, 2012 at 11:17:45PM +0200, Vladislav V. Prodan wrote:
>>
>> Tell me, what a performance in pps a network card RTL8111/8168B?
>> Can I somehow increase it?
>> Experimentally, since it begins to fall off 80Kpps: (
>>
> 
> RX performance number will show much better than that but TX is
> major bottleneck of controller.  I tried hard to enhance TX
> performance for the controller but I'm under the impression that
> that number would be the maximum(around 90Kpps) and this is also
> similar number what I got on Linux.
> Given that re(4) controllers are for non-server grade systems I
> wouldn't be surprised to see that number.  If you need higher pps,
> choose controllers targeted for servers.  Alternatively, low cost
> controllers from JMicron/Atheros also show decent TX/RX
> performance numbers.

That's why I would like to get some numerical limitations of the
controller re (4).
While there is no way to put a network card from Intel.

> 
>>
>> Jan 13 18:12:49 XXX kernel: re0: watchdog timeout
>> Jan 13 18:12:49 XXX kernel: re0: link state changed to DOWN
>> Jan 13 18:12:53 XXX kernel: re0: link state changed to UP
>>
> 
> I'm more concerned on watchdog timeouts than performance numbers.
> Would you show me re(4) related message from dmesg(8) output?
See dmesg output below.

> And if you know how to reliably trigger the watchdog timeout, would
> you share with us?

DDoS attack has undergone server and choked these packages: (
Trafshow showed a peak of 110K pps, but immediately operational watchdog
timeout.
I would appreciate help in setting up a network interface, so as long as
it is not turned off by such scams.

>>
>>
>> # uname -a
>> FreeBSD pvppw.org 9.0-PRERELEASE FreeBSD 9.0-PRERELEASE #1: Mon Dec  5
>> 14:56:07 EET 2011     root at XXX:/usr/obj/usr/src/sys/XXX.2  amd64
>>
>> # pciconf -lv | grep -A 4 "re0@"
>> re0 at pci0:2:0:0: class=0x020000 card=0x84321043 chip=0x816810ec rev=0x06
>> hdr=0x00
>>     vendor     = 'Realtek Semiconductor Co., Ltd.'
>>     device     = 'RTL8111/8168B PCI Express Gigabit Ethernet controller'
>>     class      = network
>>     subclass   = ethernet
>>
> 
> RealTek controllers tend to use the same PCI id for different
> controllers so pciconf(8) does not help here.  re(4) may have shown
> more details on your controller in dmesg output.
> 
Jan 13 18:57:03 XXX kernel: re0: <RealTek 8168/8111 B/C/CP/D/DP/E PCIe
Gigabit Ethernet> port 0xe800-0xe8ff mem
0xfcfff000-0xfcffffff,0xfcffffff,0xfcff8000-0xfcffbfff irq 18 at device
0.0 on pci2
Jan 13 18:57:03 XXX kernel: re0: Using 1 MSI-X message
Jan 13 18:57:03 XXX kernel: re0: Chip rev. 0x2c800000
Jan 13 18:57:03 XXX kernel: re0: MAC rev. 0x00000000
Jan 13 18:57:03 XXX kernel: miibus0: <MII bus> on re0
Jan 13 18:57:03 XXX kernel: rgephy0: <RTL8169S/8110S/8211 1000BASE-T
media interface> PHY 1 on miibus0
Jan 13 18:57:03 XXX kernel: rgephy0:  none, 10baseT, 10baseT-FDX,
10baseT-FDX-flow, 100baseTX, 100baseTX-FDX, 100baseTX-FDX-flow,
1000baseT, 1000baseT-master, 1000baseT-FDX, 1000baseT-FDX-master,
1000baseT-FDX-flow, 1000baseT-FDX-flow-master, auto, auto-flow
Jan 13 18:57:03 XXX kernel: re0: Ethernet address: 14:da:e9:75:5f:ee


-- 
Vladislav V. Prodan
System & Network Administrator
http://support.od.ua
+380 67 4584408, +380 99 4060508
VVP88-RIPE