Re: watchdog timer

Hal Rosenstock
2012-05-18T13:07:50Z

On 5/18/2012 2:05 AM, Bob Ciotti wrote:
>
>
> I'm seeing lots of these messages in SM log:
>
> May 17 22:36:04 947774 [DA234710] 0x01 -> log_trap_info: Received
> Generic Notice type:1 num:131 (Flow Control Update watchdog timer
> expired) Producer:2 (Switch) from LID:444 Port 5 TID:0x0000000000000025
>
> the referenced port is a switch to HCA link.
>
> I've seen this in cases where there was bad hardware. Spec says failure
> in flow control machine on other end. But lets assume hardware was good.
> When could this occur?

Do OperationalVLs match on both sides of the link ? Are you
using/configuring QoS ?

> Only in the case of FW bug?

I don't think flow control is performed by FW.

> Any tunable's that might impact this?

No IBA standard ones AFAIK. Who's the HCA vendor ?

-- Hal

> bob
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