> Am 06.08.2015 um 22:59 schrieb Rose, Gregory V <gregory.v.r...@intel.com>:
> 
> Thanks Stefan.  I think for now you've given us enough data to go on - I've 
> got some research to do and then I'll get back to you.

Thanks! If you need something else or I should apply a patch on top of the 
driver. Just write me.

Stefan

> - Greg
> 
>> -----Original Message-----
>> From: Stefan Priebe - Profihost AG [mailto:s.pri...@profihost.ag]
>> Sent: Wednesday, August 05, 2015 11:32 PM
>> To: Rose, Gregory V; e1000-devel@lists.sourceforge.net
>> Subject: Re: [E1000-devel] dropped rx with i40e
>> 
>>> Am 06.08.2015 um 00:22 schrieb Rose, Gregory V:
>>> Stefan,
>>> 
>>> Could you please send me the output of 'ethtool' and 'ethtool -i' for
>> each i40e interface that is experiencing the dropped packets issue?
>> 
>> These are around 100 cards. So i won't post the output for all of them.
>> As they're all using the same driver and the same firmware - we updated
>> all of them i hope it's ok to post the output only from one of them.
>> 
>> # ethtool eth2
>> Settings for eth2:
>>        Supported ports: [ FIBRE ]
>>        Supported link modes:   10000baseT/Full
>>        Supported pause frame use: Symmetric
>>        Supports auto-negotiation: No
>>        Advertised link modes:  Not reported
>>        Advertised pause frame use: No
>>        Advertised auto-negotiation: No
>>        Speed: 10000Mb/s
>>        Duplex: Full
>>        Port: Direct Attach Copper
>>        PHYAD: 0
>>        Transceiver: external
>>        Auto-negotiation: off
>>        Supports Wake-on: g
>>        Wake-on: d
>>        Current message level: 0x0000000f (15)
>>                               drv probe link timer
>>        Link detected: yes
>> # ethtool -i eth2
>> driver: i40e
>> version: 1.3.4-k
>> firmware-version: f4.33.31377 a1.2 n4.42 e191b
>> bus-info: 0000:03:00.0
>> supports-statistics: yes
>> supports-test: yes
>> supports-eeprom-access: yes
>> supports-register-dump: yes
>> supports-priv-flags: yes
>> 
>>> Also, the system log might help also - dmesg can get that.  That'll
>> give me something to look at.
>> 
>> As this one is pretty long. i pasted dmesg to pastebin:
>> http://pastebin.com/raw.php?i=7Tjp3eDT
>> 
>>> By the way, have you tried using ethtool to turn adaptive RX and TX off
>> using ethtool to see if that has any impact on the dropped packets?
>> 
>> I tested this one:
>> ethtool -C eth3 adaptive-rx off adaptive-tx off rx-usecs 2 tx-usecs 0
>> 
>> but it has not helped. Still dropped rx packets. While a 2nd system
>> receiving the same load using ixgbe has no dropped packets.
>> 
>>> That might be an easy test to run.
>> 
>> Thanks!
>> 
>> Greets,
>> Stefan
>> 
>> 
>>> Thanks,
>>> 
>>> - Greg
>>> 
>>>> -----Original Message-----
>>>> From: Stefan Priebe [mailto:s.pri...@profihost.ag]
>>>> Sent: Wednesday, August 05, 2015 11:14 AM
>>>> To: e1000-devel@lists.sourceforge.net
>>>> Subject: Re: [E1000-devel] dropped rx with i40e
>>>> 
>>>> 
>>>> Something i've noticed:
>>>> ixgbe:
>>>> Adaptive RX: off  TX: off
>>>> rx-usecs: 1
>>>> tx-usecs: 0
>>>> 
>>>> i40e:
>>>> Adaptive RX: on  TX: on
>>>> rx-usecs: 62
>>>> tx-usecs: 122
>>>> 
>>>> Stefan
>>>> 
>>>>> Am 05.08.2015 um 09:02 schrieb Stefan Priebe - Profihost AG:
>>>>> Hello list,
>>>>> 
>>>>> we're using the intel X520 cards with the ixgbe driver since a long
>>>>> time for our cloud infrastructure. We never had a problem with
>>>>> dropped packets and everything was always fine.
>>>>> 
>>>>> Since a year we started switching to the X710 cards as they're
>>>>> better regarding their specs (lower power consumption, lower
>>>>> latency, better price).
>>>>> 
>>>>> We've around 100 X710 cards running now and we had a lot of trouble
>>>>> with them. Back in 2014 there were a firmware bug, then there were
>>>>> driver problems with bonding and so on.
>>>>> 
>>>>> Now we have detected a new problem! We're seeing a lot of rx_dropped
>>>>> packets on all X710 cards while all ixgbe based cards are working
>> fine.
>>>>> 
>>>>> I've tested the 1.2.48 driver als also the latest 1.3.4-k driver
>>>>> from 4.2-rc5.
>>>>> 
>>>>> Can anybody help?
>>>>> 
>>>>> Greets,
>>>>> Stefan
>>>> 
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