On Tue, Mar 25, 2014 at 10:39 PM, Ronciak, John <[email protected]> wrote:
> How are the different PCIe slots connected into the system?  In a lot of 
> cases some of the slots are not all equal in terms of how they are laid out 
> in the system.  If you move the interface doing the 20ms read to a NIC in a 
> different slot does the behavior change?  Does the i/f on the m/b if used for 
> the 20ms read work correctly?
>

The odd part is that the process doing the 20ms read is reading from a
virtual tap interface (/dev/net/tun) and not from one of the NICs.  It
seems like bringing down the igb interface is causing some system
level lock at least for network I/O?

Aaron

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