From: "Wiles, Keith" <keith.wiles@intel.com>
To: Moon-Sang Lee <sang0627@gmail.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] Errors Rx count increasing while pktgen doing nothing on Intel 82598EB 10G
Date: Sat, 30 Jan 2016 01:55:33 +0000 [thread overview]
Message-ID: <D3FB98D2-1984-4C2A-976C-695150013F53@intel.com> (raw)
In-Reply-To: <63F58343-20B6-40AD-B16D-97FFD9C8CB9D@intel.com>
>
>From: Moon-Sang Lee <sang0627@gmail.com<mailto:sang0627@gmail.com>>
>Date: Wednesday, January 27, 2016 at 1:50 AM
>To: "Keith Wiles (Intel)" <keith.wiles@intel.com<mailto:keith.wiles@intel.com>>
>Cc: Laurent GUERBY <laurent@guerby.net<mailto:laurent@guerby.net>>, "dev@dpdk.org<mailto:dev@dpdk.org>" <dev@dpdk.org<mailto:dev@dpdk.org>>
>Subject: Re: [dpdk-dev] Errors Rx count increasing while pktgen doing nothing on Intel 82598EB 10G
>
>
>Laurent, have you resolved this problem?
>I'm using the same NIC as yours (i.e. Intel 82598EB 10G NIC) and faced the same problem as you.
>Here is parts of my log and it says that PMD cannot enable RX queue for my NIC.
>I'm using DPDK 2.2.0 and used 'null' for the 4th parameter in calling rte_eth_rx_queue_setup().
>(i.e. 'null' parameter provides the default rx_conf value.)
>
>Thanks.
>
>The problem I found with the increasing RX errors is because a stats register was being read that does not exist in that given chipset and removing that register read would eliminate the false errors you were seeing. Here is part of the email I sent to Laurent.
The problem I found with the increasing RX errors is because a stats register was being read that does not exist in that given chipset and removing that register read would eliminate the false errors you were seeing. Here is part of the email I sent to Laurent.
Hi Laurent,
Well, it appears the problem is on the ixgbe driver the fccrc and fclast hw stats are not supported on 82598 only the 82599+ devices.
On t3 you can look at the ixgbe_ethdev.c code I modified to remove these two stats, which caused ierrors to increase. You can also revert any changes in Pktgen to master as they did not help fix any thing. Sorry is it 6 am and I need to sleep some, I could not sleep tonight, so you I was able to debug the problem. Please remove the debug code in the ixgbe driver if you like as well and move that change to t1 machine. I will report this to the list later.
The performance of pktgen/DPDK was not being effected by these counters.
Thanks
++Keith
prev parent reply other threads:[~2016-01-30 1:55 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-27 18:31 Laurent GUERBY
2015-12-27 19:43 ` Wiles, Keith
2015-12-27 20:09 ` Laurent GUERBY
2015-12-27 20:28 ` Wiles, Keith
2016-01-27 6:50 ` Moon-Sang Lee
2016-01-27 7:15 ` Laurent GUERBY
2016-01-27 7:23 ` Zhang, Helin
2016-01-28 0:57 ` Moon-Sang Lee
2016-01-29 10:02 ` Moon-Sang Lee
2016-01-30 1:23 ` Wiles, Keith
2016-01-30 1:55 ` Wiles, Keith [this message]
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