Intel 82574L Gigabit Ethernet Controller

[Jack Vogel]

Are  you defining 'EM_MULTIQUEUE', its off by default and needs to be
defined somewhere by you.

You will only see the two queues used if you have two different connections
operating at once.

Jack


On Mon, Jul 5, 2010 at 4:43 AM, Shtorm <admin at shtorm.com> wrote:

> I just got Supermicro SuperServer 5016I-MRF server with two 82574L
> controllers on board. According to specs this controller can do two
> msi-x vectors for tx and rx, but only one tx-rx pair is used on
> 8.1-prerelease.
>
> uname -a
> FreeBSD router 8.1-PRERELEASE FreeBSD 8.1-PRERELEASE #0: Tue Jun 29
> 00:42:32 UTC 2010     root at releng_8:/usr/obj/usr/src/sys/ROUTER  amd64
>
> Here is pciconf
>
> em0 at pci0:1:0:0: class=0x020000 card=0x10d315d9 chip=0x10d38086 rev=0x00
> hdr=0x00
>    vendor     = 'Intel Corporation'
>    device     = 'Intel 82574L Gigabit Ethernet Controller (82574L)'
>    class      = network
>    subclass   = ethernet
> em1 at pci0:2:0:0: class=0x020000 card=0x10d315d9 chip=0x10d38086 rev=0x00
> hdr=0x00
>    vendor     = 'Intel Corporation'
>    device     = 'Intel 82574L Gigabit Ethernet Controller (82574L)'
>    class      = network
>    subclass   = ethernet
>
> Checking procstat shows 5 interrupts per interface
>
> procstat -at | grep em\[01\]
>    0 100035 kernel     em0 rxq            0   16 sleep   -
>    0 100037 kernel     em0 txq            6   16 sleep   -
>    0 100039 kernel     em0 rxq            0   16 sleep   -
>    0 100041 kernel     em0 txq            0   16 sleep   -
>    0 100044 kernel     em1 rxq            0   16 sleep   -
>    0 100046 kernel     em1 txq            1   16 sleep   -
>    0 100048 kernel     em1 rxq            0   16 sleep   -
>    0 100050 kernel     em1 txq            0   16 sleep   -
>   11 100034 intr       irq256: em0        7   16 wait    -
>   11 100036 intr       irq257: em0        0   16 wait    -
>   11 100038 intr       irq258: em0        0   16 wait    -
>   11 100040 intr       irq259: em0        0   16 wait    -
>   11 100042 intr       irq260: em0        3   16 wait    -
>   11 100043 intr       irq261: em1        4   16 wait    -
>   11 100045 intr       irq262: em1        5   16 wait    -
>   11 100047 intr       irq263: em1        0   16 wait    -
>   11 100049 intr       irq264: em1        0   16 wait    -
>   11 100051 intr       irq265: em1        2   16 wait    -
>
>
> but vmstat -i shows only one pair is used
>
> %vmstat -i
> interrupt                          total       rate
> irq1: atkbd0                         391          0
> irq18: ehci0 uhci5                     2          0
> irq19: uhci2 uhci4                    27          0
> irq23: uhci3 ehci1                  8463          0
> cpu0: timer                    107412943       7864
> irq256: em0                     93311951       6832
> irq257: em0                     90479067       6624
> irq260: em0                            2          0
> irq261: em1                     92966894       6806
> irq262: em1                     80298240       5879
> irq265: em1                            1          0
> cpu1: timer                    107412607       7864
> cpu2: timer                    107412785       7864
> cpu3: timer                    107412830       7864
> cpu5: timer                    107413210       7864
> cpu4: timer                    107413389       7864
> cpu7: timer                    107407337       7864
> cpu6: timer                    107413132       7864
> Total                         1216363271      89058
>
>
> Here is my loader.conf
>
> %cat /boot/loader.conf | grep em
> if_em_load=YES
> hw.em.rxd=4096
> hw.em.txd=4096
> hw.em.tx_int_delay=512
> hw.em.rx_int_delay=512
> hw.em.tx_abs_int_delay=1024
> hw.em.rx_abs_int_delay=1024
> hw.em.enable_msix=1
> hw.em.msix_queues=2
> hw.em.rx_process_limit=100
> hw.em.fc_setting=0
>
>
> Is it ever possible to activate second tx-rx pair on this card?
>
>
>
>
>
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