netdev - [PATCH 0/1] myri10ge: limit the number of recoveries

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Message-ID: <466446B8.4000800@myri.com>
Date:	Mon, 04 Jun 2007 19:07:04 +0200
From:	Brice Goglin <brice@...i.com>
To:	Jeff Garzik <jeff@...zik.org>
Subject: [PATCH 0/1] myri10ge: limit the number of recoveries

Jeff Garzik wrote:
> Brice Goglin wrote:
>> Limit the number of recoveries from a NIC hw watchdog reset to 1 by
>> default.
>> It enables detection of defective NICs immediately since these memory
>> parity
>> errors are expected to happen very rarely (less than once per
>> century*NIC).
>> However, a defective NIC (very rare, fortunately) can see such an error
>> quite often, ie. every few minutes under high load.
>>
>> Make the limit tunable to allow people with mission critical
>> installations
>> to crank up the tunable and recover an INTMAX number of times while
>> waiting
>> for a downtime window to replace the NIC. The performance won't be
>> optimal,
>> but at least, it will still work.
>>
>> Signed-off-by: Brice Goglin <brice@...i.com>
>> ---
>>  drivers/net/myri10ge/myri10ge.c |   15 +++++++++++++--
>>  1 file changed, 13 insertions(+), 2 deletions(-)
>
> NAK.

Ok...
Then please apply the following patch which limits the number of
recovery to 1 without making it tunable. It will at least enable
detection of bad NICs.

Brice


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