* [dpdk-users] How to debug I40E PMD RX/TX frees
@ 2016-10-17 14:45 VERDOUX, Sylvain
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From: VERDOUX, Sylvain @ 2016-10-17 14:45 UTC (permalink / raw)
To: users
Hello,
I am currently trying a small igmp sample test using dpdk I40E PMD (NIC is X710). The code is quite simple and uses 2 lcores to handle a recv loop on RX0 and a send loop on TX0. When the recv loop detects a query, it notifies the send loop to emit a report. I use at startup a fdir filter to move the mcast flow to another queue to not be polluted with this flow in my recv loop. For a while it works fine but after some time, the recv loop just stop retrieving queries, and I have difficulties debugging the problem. It seems like a mbuf free problem but even if I have activated I40E debug and mbuf debug in my dpdk config file then recompile it, I can't see any alarming message. For now I think that I free received mbufs properly and sent mbufs should be released by the tx_burst function, so I don't really understand the issue. So I'm asking if tools are available to debug deeply the problem ?
Thanks,
Best Regards
Sylvain
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