From: Moni Shoua <monis-hKgKHo2Ms0F+cjeuK/JdrQ@public.gmane.org>
To: Eli Cohen <eli-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
Cc: Josh England <jjengla-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: IPoIB issues
Date: Wed, 10 Mar 2010 17:30:38 +0200 [thread overview]
Message-ID: <4B97BB1E.7010900@Voltaire.COM> (raw)
In-Reply-To: <20100303122937.GA1689-8YAHvHwT2UEvbXDkjdHOrw/a8Rv0c6iv@public.gmane.org>
Eli Cohen wrote:
> I just posted a patch which might fix your problem. Please try it and
> let us know if it fixed anything.
>
Hi Eli
Although Josh already reported that the patch seems to fix the issue I have a question though.
"post_send failed" prints were during work in datagram mode. I don't know if Josh verified
that but I don't expect that these prints would go away, even with the patch. Am I right?
BTW, what could be the reason for UD QP post_send() failures?
>>
>> In datagram mode, I see errors on the boot servers of the form.
>>
>> ib0: post_send failed
>> ib0: post_send failed
>> ib0: post_send failed
>>
>>
>> When using connected mode, I hit a different error:
>>
>> NETDEV WATCHDOG: ib0: transmit timed out
>> ib0: transmit timeout: latency 1999 msecs
>> ib0: queue stopped 1, tx_head 2154042680, tx_tail 2154039464
>> NETDEV WATCHDOG: ib0: transmit timed out
>> ib0: transmit timeout: latency 2999 msecs
>> ib0: queue stopped 1, tx_head 2154042680, tx_tail 2154039464
>> ...
>> ...
>> NETDEV WATCHDOG: ib0: transmit timed out
>> ib0: transmit timeout: latency 61824999 msecs
>> ib0: queue stopped 1, tx_head 2154042680, tx_tail 2154039464
>>
>>
>> The errors seem to hit only after NFS comes into play. Once it
>> starts, the NETDEV WATCHDOG messages continue until I run
>> 'ifconfig ib0 down up'. I've tried tuning send_queue_size and
>> recv_queue_size on both sides, the txqueuelen of the ib0 interface, the
>> NFS rsize/wsize. None of it seems to help greatly. Does anyone have
>> any ideas about what can I do to try to fix
>> these problems?
>>
>> -JE
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next prev parent reply other threads:[~2010-03-10 15:30 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-02 21:54 IPoIB issues Josh England
[not found] ` <a72123c41003021354y7880e74cud26d6010f23f9458-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-03-03 12:29 ` Eli Cohen
[not found] ` <20100303122937.GA1689-8YAHvHwT2UEvbXDkjdHOrw/a8Rv0c6iv@public.gmane.org>
2010-03-04 0:38 ` Josh England
2010-03-10 15:30 ` Moni Shoua [this message]
[not found] ` <4B97BB1E.7010900-hKgKHo2Ms0F+cjeuK/JdrQ@public.gmane.org>
2010-03-11 6:56 ` Eli Cohen
[not found] ` <20100311065640.GB2081-8YAHvHwT2UEvbXDkjdHOrw/a8Rv0c6iv@public.gmane.org>
2010-03-11 7:47 ` Or Gerlitz
[not found] ` <4B98A013.3040103-smomgflXvOZWk0Htik3J/w@public.gmane.org>
2010-03-11 7:59 ` Eli Cohen
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