Hello,
I am seeing some TX Wait counts and everything else is clean see image. I’ve read that it could be related to some congestion. This switch is full layer 2 only and has a NAS server attached with some editing workstations in 10gb.
NAS server 100gb port is also clean. Should I be concerned?
thank you,
Switch is Mellanox MSN2410 running MLNX-OS X86_64 3.6.1102
Hi Dany,
tx_wait means packet was encumbered/delayed, but not dropped, in the buffer due some circumstance preventing forwarding. Examples of when we see this:
*Multiple interfaces sending to single port. (Example 10G connected device and we have multiple 10G senders to that device.[ i.e. fan-in traffic].)
*Slow speed interface (100G to 25G port.)
*Slow reciever attached such as one that is sending pause frames. (PFC/LLFC).
Storage traffic I/O pattern can be random/unpredictable and “buffer greedy” so this isn’t too surprising. In itself tx_wait it isn’t too much to worry about and should be considered informational unless accompanied by actual peformance issues then you may need to consider implementing QoS.
If addition help is needed please open a support ticket.
Charles Stizza
Global Technical Support
NVIDIA Enterprise Experience
