[openib-general] Re: A Couple of IPoIB related issues
Michael S. Tsirkin
mst at mellanox.co.il
Thu Jul 7 13:27:41 PDT 2005
Quoting r. Hal Rosenstock <halr at voltaire.com>:
> Subject: A Couple of IPoIB related issues
>
> Hi,
>
> Two issues have been observed when running IPoIB:
>
> 1. NETDEV WATCHDOG: ib0: transmit timed out
> ib0: transmit timeout: latency 360052
>
> This occurs once a minute on heavy pings.
could you be running some kind of daemon with UDP?
> 2. __alloc_pages() warnings
>
> here is a partial log quote:
> ---
>
> The following is only an harmless informational message.
> Unless you get a _continuous_flood_ of these messages it means
> everything is working fine. Allocations from irqs cannot be
> perfectly reliable and the kernel is designed to handle that.
> ping: page allocation failure. order:0, mode:0x20
mode 20 is GFP_ATOMIC, so there's no reason to worry.
...
> Any idea on what could be causing these or how to go about isolating
> them ? Thanks.
>
> -- Hal
--
MST
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