mlx4en, timer irq @100%...
ben.rubson at gmail.com
Fri Aug 4 16:59:14 UTC 2017
Not sure this is the right list, but as it seems related to a mlx4en device...
# vmstat -i 1
interrupt total rate
cpu23:timer 1198 1127
# top -P ALL
CPU 23: 0.0% user, 0.0% nice, 0.0% system, 100% interrupt, 0.0% idle
# netstat -I mlxen0 -d -w 1
input mlxen0 output
packets errs idrops bytes packets errs bytes colls drops
(and not output at all, same for mlxen1 !)
# uname -sr
So, as you can see, one of my CPUs is used at 100% by timer interrupts,
since about 2 hours, and suddenly.
Initiating network connections to this server is now slow.
And what I found is that I can't use netstat on my 2 mlx4en devices anymore
(my monitoring tool is then no more fed).
sysctl hw.mlxen0 is OK, no errors, and trafic counters grow slowly.
What should I do ?
How to investigate on this ?
Thank you very much for your help & support,
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